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XP-TEAL: Gaia XP Tool for Emission and Absorption Lines II. Gaia-HELIX catalogue of H$\alpha$ emitters in Gaia BP/RP spectra

T0 review · 3 major / 2 minor · reviewed 2026-06-26 · grok-4.3

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Pith's one-line read Gaia XP spectra produce a catalogue of 28394 Hα emitters after rejecting M-star false positives.

desk verdict New catalogue of 28k Hα emitters from Gaia XP, but the semi-supervised classifier lacks reported performance numbers. read the letter →

arxiv 2606.21420 v1 pith:IPAEWQKH submitted 2026-06-19 astro-ph.SR astro-ph.GAastro-ph.IM

S. Malhotra , M. Weiler , F. Anders , J. M. Carrasco , G. Garcia-Moreno , C. Jordi , N. Blagorodnova , A. Castro-Ginard
show 3 more authors
J. Castañeda F. Boix X. Luri
This is my paper · ORCID
classification astro-ph.SRastro-ph.GAastro-ph.IM
keywords HαemissionGaiaDR3XPspectraBestarslinestellarcatalogueBalmerlines
verification ladder T0 review T1 audit T2 compute T3 formal

The pith

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The reading

The paper measures the equivalent width of the Hα line directly from the XP spectral coefficients for all 219 million sources in Gaia DR3. An initial 2σ cut selects 556100 candidates showing an emission-like feature. A semi-supervised classifier plus manual labelling then discards 95 percent of them as cool M-type stars whose molecular absorption bands create a local maximum that mimics emission. This leaves 28394 bona-fide Hα emitters whose equivalent widths and classifications agree with higher-resolution work and limited ground-based follow-up.

What carries the argument

Direct measurement of Hα equivalent width from XP spectral coefficients, combined with semi-supervised classification and manual labelling to separate true emission from molecular absorption mimics.

What would settle it

Independent high-resolution spectroscopy showing that a substantial portion of the Be-like candidates lack actual Hα emission would falsify the catalogue's validity.

Watch

Extended reading notes

Core claim

Equivalent widths of the Balmer Hα line are measured for all sources with Gaia XP spectra. An initial 2σ selection gives 556100 candidates. A semi-supervised classifier with manual labelling removes 95 percent that are M-type stars with mimicking absorption bands. This yields 28394 bona-fide Hα emitters: 26287 Be-like candidates, 717 active M-type stars, 525 Herbig Ae/Be candidates, 204 QSOs, 177 Wolf-Rayet stars, 51 cataclysmic variables, and 18 carbon stars, among others.

Load-bearing premise

The semi-supervised classifier combined with manual spectral labelling correctly removes the 95% of initial candidates that are cool M-type stars whose molecular absorption bands mimic Hα emission, while retaining true emitters.

Editorial extensions

If this is right

  • The derived equivalent widths agree with those from higher-resolution studies.
  • Stellar classifications match results from recent Gaia XP-based catalogues.
  • Ground-based spectroscopic follow-up confirms the reliability of the new emitters in the catalogue.
  • The sample enables statistical studies of Hα emission across different stellar types.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

  • The same coefficient-based measurement technique could be applied to detect other spectral lines in the XP data.
  • This large sample of Be-like stars offers a resource for investigating their galactic distribution and evolution.
  • Future data releases with more XP spectra could produce expanded versions of this catalogue using the same pipeline.
  • Combining the catalogue with photometric variability data might identify new types of emitters.
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Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit.

Referee Report

3 major / 2 minor

Summary. The manuscript introduces the XP-TEAL tool for measuring equivalent widths of lines directly from Gaia XP spectral coefficients and applies it to construct the Gaia-HELIX catalogue. From 556100 sources showing an Hα emission-like feature at the 2σ level, a semi-supervised classifier plus manual labelling removes 95% of candidates (identified as cool M-type stars whose molecular bands mimic emission), yielding 28394 bona-fide Hα emitters. These are broken down into Be-like candidates (26287), active M-type stars (717), Herbig Ae/Be candidates (525), QSOs (204), Wolf-Rayet stars (177), cataclysmic variables (51), carbon stars (18) and other classes. Equivalent widths and classifications are stated to agree with higher-resolution studies and limited ground-based follow-up.

Significance. If the filtering step is reliable, the catalogue supplies a large, homogeneous sample of Hα emitters across multiple classes, with the dominant Be-like population offering statistical power for studies of circumstellar disks and variability. The direct use of XP coefficients for equivalent-width measurement and the external cross-checks against independent catalogues are positive features that could make the resource useful for target selection.

major comments (3)
  1. [Methods] Methods (classifier description): No training-set size, feature list, hyper-parameters, or quantitative performance metrics (precision, recall, confusion matrix, or cross-validation scores) are reported for the semi-supervised classifier that discards 95% of the 556100 initial candidates. This step is load-bearing for both the total count and the subtype fractions.
  2. [Results] Results (catalogue construction): The claim that exactly 28394 sources are bona-fide emitters (with the listed breakdown) rests on the unquantified assumption that the classifier plus manual labelling retains true emitters while removing M-star mimics; without reported false-positive or false-negative rates, the reliability of the final numbers cannot be assessed.
  3. [Results] Results (validation): The statement of “good agreement” with higher-resolution studies is given without accompanying tables, overlap statistics, or direct EW comparisons, making it impossible to judge the strength of the external validation.
minor comments (2)
  1. [Methods] The 2σ emission detection threshold is stated without discussion of how the noise is estimated from the XP coefficients.
  2. [Figures/Tables] Figure captions and table headers should explicitly state the wavelength range and resolution of the comparison spectra used for validation.

Simulated Author's Rebuttal

3 responses · 0 unresolved

We thank the referee for the constructive and detailed report. We address each major comment below and will revise the manuscript to incorporate the requested information and strengthen the presentation of methods and validation.

read point-by-point responses

  1. Referee: [Methods] Methods (classifier description): No training-set size, feature list, hyper-parameters, or quantitative performance metrics (precision, recall, confusion matrix, or cross-validation scores) are reported for the semi-supervised classifier that discards 95% of the 556100 initial candidates. This step is load-bearing for both the total count and the subtype fractions.

    Authors: We agree that the Methods section lacks sufficient detail on the semi-supervised classifier. In the revised manuscript we will add the training-set size, the complete feature list, the hyper-parameters, and quantitative performance metrics including precision, recall, a confusion matrix, and cross-validation scores. These additions will allow readers to evaluate the filtering step that removed 95% of the initial candidates. revision: yes

  2. Referee: [Results] Results (catalogue construction): The claim that exactly 28394 sources are bona-fide emitters (with the listed breakdown) rests on the unquantified assumption that the classifier plus manual labelling retains true emitters while removing M-star mimics; without reported false-positive or false-negative rates, the reliability of the final numbers cannot be assessed.

    Authors: We acknowledge that the final catalogue counts and subtype fractions require quantified error rates to be fully assessed. We will add a dedicated subsection on catalogue construction that reports estimated false-positive and false-negative rates derived from the manual labelling and any available ground-truth cross-matches. This will clarify the reliability of the 28394 bona-fide emitters and the reported breakdown. revision: yes

  3. Referee: [Results] Results (validation): The statement of “good agreement” with higher-resolution studies is given without accompanying tables, overlap statistics, or direct EW comparisons, making it impossible to judge the strength of the external validation.

    Authors: We agree that the validation claims need quantitative support. In the revised manuscript we will include tables with overlap statistics against independent higher-resolution catalogues, direct equivalent-width comparisons, and any relevant agreement metrics. These will substantiate the statement of good agreement with both higher-resolution studies and other Gaia XP-based catalogues. revision: yes

Circularity Check

0 steps flagged · score 0.0 of 10

No circularity: observational catalogue construction with external validation

full rationale

The paper measures Hα equivalent widths directly from Gaia XP coefficients for all sources, selects 2σ candidates, applies a semi-supervised classifier plus manual labelling to remove M-star mimics, and reports the resulting 28394 bona-fide emitters with subtype breakdown. This is a data-processing pipeline, not a derivation. The prior method paper is cited for the measurement technique but is not invoked as a uniqueness theorem or to force the final counts. Results are stated to agree with independent higher-resolution studies and ground-based follow-up, satisfying the criterion for non-circular external support. No equation or step reduces by construction to its own inputs.

Assumptions & free parameters 1 free parameters · 2 assumptions · 0 invented entities

The central claim rests on the validity of the XP-TEAL line-measurement method from prior work and on the assumption that low-resolution XP spectra plus a classifier can separate true emission from molecular mimics.

free parameters (1)
  • 2σ emission detection threshold
    Threshold used to select the initial 556100 candidates from all XP spectra.
assumptions (2)
  • domain assumption XP spectral coefficients permit direct equivalent-width measurement of Hα
    Invoked when the initial sample is defined.
  • domain assumption Semi-supervised classification plus manual labelling can reliably separate true Hα emitters from M-star mimics
    Central filtering step that reduces the sample from 556100 to 28394.

how reviews work

0 comments
Cite this review

Pith. "Pith review of XP-TEAL: Gaia XP Tool for Emission and Absorption Lines II. Gaia-HELIX catalogue of H$\alpha$ emitters in Gaia BP/RP spectra." pith.science (2026). https://pith.science/paper/IPAEWQKH

@misc{pith2026260621420,
  author       = {Pith},
  title        = {Pith review of: XP-TEAL: Gaia XP Tool for Emission and Absorption Lines II. Gaia-HELIX catalogue of H$\alpha$ emitters in Gaia BP/RP spectra},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/IPAEWQKH}},
  note         = {Machine review of arXiv:2606.21420}
}
abstract

Context: With Gaia's third Data Release (DR3), low-resolution BP/RP (XP) spectra became available for more than 219 million sources. In previous work, we developed a fast method for detecting absorption and emission lines while measuring their equivalent widths directly from the XP spectral coefficients. Aims: Our aim is to conduct a systematic search for H$\alpha$ emitters in the Gaia DR3 XP spectra. Methods: We measured the equivalent width of the Balmer H$\alpha$ line for all sources with Gaia XP spectra, and selected an initial sample of 556100 sources depicting an H$\alpha$ emission-like feature at 2$\sigma$ level or above. Using a semi-supervised classifier complemented by manual spectral labelling, we removed sources that merely masqueraded as emission-line stars. Results: We find that 95% of the initial candidates are most likely cool M-type stars, where a molecular absorption band gives rise to a local maximum that can mimic H$\alpha$ emission. Subsequently, 28394 sources are flagged as bona-fide H$\alpha$ emitters using the Gaia DR3 XP spectra. The majority are Be-like candidates (26287), active M-type stars (717), Herbig Ae/Be candidates (525), quasi-stellar objects (204), Wolf-Rayet stars (177), cataclysmic variables (51), and carbon stars (18), among other sources. Our equivalent widths and stellar classifications are in good agreement with results from higher-resolution studies and recent Gaia XP spectra-based catalogues. Ground-based spectroscopic follow-up for some of the newly found emitters reinforces our confidence in the catalogue.

Discussion (0). Continue with ORCID to comment.

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Works this paper leans on

161 extracted references · 144 canonical work pages

  1. [1]

    Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave , year = 2024, editor =

    Survey science with the Nancy Grace Roman Space Telescope Wide Field Instrument. Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave , year = 2024, editor =. doi:10.1117/12.3020622 , adsurl =

    work page doi:10.1117/12.3020622 2024

  2. [2]

    X-Shooting ULLYSES: Massive stars at low metallicity. II. DR1: Advanced optical data products for the Magellanic Clouds. , keywords =. doi:10.1051/0004-6361/202347479 , archivePrefix =. 2402.16987 , primaryClass =

    work page doi:10.1051/0004-6361/202347479

  3. [3]

    XP-TEAL: Gaia XP tool for emission and absorption lines. I. Balmer lines in open clusters. , keywords =

  4. [4]

    X-Shooting ULLYSES: Massive stars at low metallicity. I. Project description. , keywords =. doi:10.1051/0004-6361/202245650 , archivePrefix =. 2305.06376 , primaryClass =

    work page doi:10.1051/0004-6361/202245650

  5. [5]

    , keywords =

    Antonucci, Robert. Unified Models for Active Galactic Nuclei and Quasars. Annual Review of Astronomy and Astrophysics. 1993. doi:https://doi.org/10.1146/annurev.aa.31.090193.002353

    work page doi:10.1146/annurev.aa.31.090193.002353 1993

  6. [6]

    , keywords =

    Transferring spectroscopic stellar labels to 217 million Gaia DR3 XP stars with SHBoost. , keywords =. doi:10.1051/0004-6361/202451427 , archivePrefix =. 2407.06963 , primaryClass =

    work page doi:10.1051/0004-6361/202451427

  7. [7]

    The celestial reference frame (Gaia-CRF3)

    Gaia Early Data Release 3. The celestial reference frame (Gaia-CRF3). , keywords =. doi:10.1051/0004-6361/202243483 , archivePrefix =. 2204.12574 , primaryClass =

    work page doi:10.1051/0004-6361/202243483

  8. [8]

    , year = 1963, month = mar, volume =

    3C 273 : A Star-Like Object with Large Red-Shift. , year = 1963, month = mar, volume =. doi:10.1038/1971040a0 , adsurl =

    work page doi:10.1038/1971040a0 1963

Show all 161 references
  1. [9]

    Cataclysmic variable stars

  2. [10]

    Advances in Astronomy and Astrophysics , year = 1962, month = jan, volume =

    The Properties and Problems of T Tauri Stars and Related Objects. Advances in Astronomy and Astrophysics , year = 1962, month = jan, volume =. doi:10.1016/B978-1-4831-9919-1.50006-6 , adsurl =

    1962 doi

  3. [11]

    , year = 1945, month = sep, volume =

    T Tauri Variable Stars. , year = 1945, month = sep, volume =. doi:10.1086/144749 , adsurl =

    1945 doi

  4. [12]

    Living Reviews in Solar Physics , keywords =

    Observations of Cool-Star Magnetic Fields. Living Reviews in Solar Physics , keywords =. doi:10.12942/lrsp-2012-1 , archivePrefix =. 1203.0241 , primaryClass =

    2012 doi arXiv

  5. [13]

    , keywords =

    Calibration of the H Age-Activity Relation for M Dwarfs. , keywords =. doi:10.3847/1538-3881/abf561 , archivePrefix =. 2104.01232 , primaryClass =

    doi

  6. [14]

    , keywords =

    H Emission Variability in Active M Dwarfs. , keywords =. doi:10.1086/664024 , archivePrefix =. 1112.1411 , primaryClass =

    doi arXiv

  7. [15]

    , keywords =

    Detection of hot subdwarf binaries and He-poor hot subdwarf stars using machine learning methods and a large sample of Gaia XP spectra. , keywords =. doi:10.1051/0004-6361/202558282 , archivePrefix =. 2601.21727 , primaryClass =

    doi

  8. [16]

    Turbulent outflows from [WC]-type nuclei of planetary nebulae. I. BD +30 3639 and other [WC 9-10] stars. , keywords =

  9. [17]

    , keywords =

    A deep catalogue of classical Be stars in the direction of the Perseus Arm: spectral types and interstellar reddenings. , keywords =. doi:10.1093/mnras/stu2090 , archivePrefix =. 1410.1533 , primaryClass =

    doi arXiv

  10. [18]

    , year = 1960, month = mar, volume =

    The Spectra of Be- and Ae-Type Stars Associated with Nebulosity. , year = 1960, month = mar, volume =. doi:10.1086/190050 , adsurl =

    1960 doi

  11. [19]

    , keywords =

    Herbig Stars. , keywords =. doi:10.1007/s11214-023-00949-z , archivePrefix =. 2301.01165 , primaryClass =

    doi

  12. [20]

    Gaia photometric science alerts

    Gaia Early Data Release 3. Gaia photometric science alerts. , keywords =. doi:10.1051/0004-6361/202140735 , archivePrefix =. 2106.01394 , primaryClass =

    doi

  13. [21]

    A spectroscopic multiplicity survey of Galactic Wolf-Rayet stars . III. The northern late-type nitrogen-rich sample. , keywords =. doi:10.1051/0004-6361/202244308 , archivePrefix =. 2212.06927 , primaryClass =

    doi

  14. [22]

    , keywords =

    Binary deviations from single object astrometry. , keywords =. doi:10.1093/mnras/staa1148 , archivePrefix =. 2003.05456 , primaryClass =

    2003 doi

  15. [23]

    Predicted astrometric signals

    Astrometric identification of nearby binary stars - I. Predicted astrometric signals. , keywords =. doi:10.1093/mnras/stac959 , archivePrefix =. 2111.10380 , primaryClass =

    doi

  16. [24]

    The Open Journal of Astrophysics , keywords =

    Symbiotic star candidates in Gaia Data Release 3. The Open Journal of Astrophysics , keywords =. doi:10.33232/001c.143522 , archivePrefix =. 2506.20505 , primaryClass =

    doi

  17. [25]

    Spectral data and polarimetry

    A study of Be stars in the time domain - I. Spectral data and polarimetry. , keywords =. doi:10.1093/mnras/stae628 , archivePrefix =. 2403.01654 , primaryClass =

    doi

  18. [26]

    A representative sample of Be stars . I. Sample selection, spectral classification and rotational velocities. , keywords =. doi:10.1051/aas:1999478 , archivePrefix =. astro-ph/9903458 , primaryClass =

    doi arXiv

  19. [27]

    A representative sample of Be stars. V. H variability. , keywords =. doi:10.1051/0004-6361/201220419 , archivePrefix =. 1305.0175 , primaryClass =

    doi arXiv

  20. [28]

    , keywords =

    A Study of the H Variability of Be Stars. , keywords =. doi:10.3847/1538-3881/aacbd8 , adsurl =

    doi

  21. [29]

    , keywords =

    Binarity at LOw Metallicity (BLOeM): A spectroscopic VLT monitoring survey of massive stars in the SMC. , keywords =. doi:10.1051/0004-6361/202451586 , archivePrefix =. 2407.14593 , primaryClass =

    doi

  22. [30]

    arXiv e-prints , keywords =

    A New Pathway to Single Be Stars: Ejected Companions from Type Ia Supernovae. arXiv e-prints , keywords =. doi:10.48550/arXiv.2604.21402 , archivePrefix =. 2604.21402 , primaryClass =

    doi arXiv

  23. [31]

    Research Notes of the American Astronomical Society , year = 2019, month = feb, volume =

    First Release of the New Online Database of Symbiotic Variables. Research Notes of the American Astronomical Society , year = 2019, month = feb, volume =. doi:10.3847/2515-5172/ab0429 , adsurl =

    2019 doi

  24. [32]

    arXiv e-prints , keywords =

    Analysis of the Gaia DR3 planetary nebula candidates and the possible symbiotic stars among them. arXiv e-prints , keywords =

  25. [33]

    , keywords =

    The three-dimensional structure of galactic molecular cloud complexes out to 2.5 kpc. , keywords =. doi:10.1093/mnras/stac2790 , archivePrefix =. 2210.03615 , primaryClass =

    doi

  26. [34]

    Spectroscopically Identified Cataclysmic Variables from the LAMOST Survey. I. The Sample. , keywords =. doi:10.3847/1538-3881/ab5962 , archivePrefix =. 1911.08338 , primaryClass =

    1911 doi

  27. [35]

    A Unified Approach to Interpreting Model Predictions , url =

    Lundberg, Scott M and Lee, Su-In , booktitle =. A Unified Approach to Interpreting Model Predictions , url =

  28. [36]

    , keywords =

    Spatial distribution of Galactic Wolf-Rayet stars and implications for the global population. , keywords =. doi:10.1093/mnras/stu2525 , archivePrefix =. 1412.0699 , primaryClass =

    doi arXiv

  29. [37]

    High-resolution H-band Spectroscopy of Be Stars with SDSS-III/APOGEE. II. Line Profile and Radial Velocity Variability. , keywords =. doi:10.3847/1538-3881/aa64ce , adsurl =

    doi

  30. [39]

    , keywords =

    StarHorse results for spectroscopic surveys and Gaia DR3: Chrono-chemical populations in the solar vicinity, the genuine thick disk, and young alpha-rich stars. , keywords =. doi:10.1051/0004-6361/202245399 , archivePrefix =. 2303.09926 , primaryClass =

    doi

  31. [40]

    , keywords =

    Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5. , keywords =. doi:10.1051/0004-6361/202142369 , archivePrefix =. 2111.01860 , primaryClass =

    doi

  32. [41]

    The CDS reference database for astronomical objects

    The SIMBAD astronomical database. The CDS reference database for astronomical objects. , keywords =. doi:10.1051/aas:2000332 , archivePrefix =. astro-ph/0002110 , primaryClass =

    doi arXiv

  33. [42]

    , keywords =

    Gaia uncovers difference in B and Be star binarity at small scales: evidence for mass transfer causing the Be phenomenon. , keywords =. doi:10.1093/mnras/stad3105 , archivePrefix =. 2310.05653 , primaryClass =

    doi

  34. [43]

    , keywords =

    A Large Catalog of Accurate Distances to Local Molecular Clouds: The Gaia DR2 Edition. , keywords =. doi:10.3847/1538-4357/ab2388 , archivePrefix =. 1902.01425 , primaryClass =

    1902 doi arXiv

  35. [44]

    The Origins and Evolutionary Status of B Stars Found Far from the Galactic Plane. II. Kinematics and Full Sample Analysis. , keywords =. doi:10.1086/504079 , archivePrefix =. astro-ph/0603238 , primaryClass =

    doi arXiv

  36. [45]

    , keywords =

    On the kinematics of a runaway Be star population. , keywords =. doi:10.1093/mnras/sty980 , archivePrefix =. 1804.05849 , primaryClass =

    doi arXiv

  37. [46]

    arXiv e-prints , keywords =

    UMAP: Uniform Manifold Approximation and Projection for Dimension Reduction. arXiv e-prints , keywords =. doi:10.48550/arXiv.1802.03426 , archivePrefix =. 1802.03426 , primaryClass =

    doi arXiv

  38. [47]

    , keywords =

    Analysis of mass-transferring binary candidates in the Milky Way. , keywords =. doi:10.1051/0004-6361/202557113 , archivePrefix =. 2509.08118 , primaryClass =

    doi

  39. [48]

    arXiv e-prints , keywords =

    A Be star-black hole binary with a wide orbit from LAMOST time-domain survey. arXiv e-prints , keywords =. doi:10.48550/arXiv.2505.23151 , archivePrefix =. 2505.23151 , primaryClass =

    doi

  40. [49]

    Known symbiotics in DR3 and FPR

    Symbiotic binaries in the Gaia data ─ I. Known symbiotics in DR3 and FPR. , keywords =. doi:10.1093/mnras/stag125 , adsurl =

    doi

  41. [50]

    , keywords =

    Statistics of planetary nebulae with [WR] central stars. , keywords =. doi:10.1023/A:1002700404134 , adsurl =

    doi

  42. [51]

    , keywords =

    Quantitative classification of WR nuclei of planetary nebulae. , keywords =. doi:10.1051/0004-6361:20030391 , adsurl =

    doi

  43. [52]

    , keywords =

    Unveiling Quasars in Gaia DR3: Multimodal Classification and Redshift Estimation of BP/RP Sources with Deep Learning. , keywords =. doi:10.3847/1538-4365/ae4003 , adsurl =

    doi

  44. [53]

    , keywords =

    Deep learning interpretability analysis for carbon star identification in Gaia DR3. , keywords =. doi:10.1051/0004-6361/202449619 , archivePrefix =. 2407.18754 , primaryClass =

    doi

  45. [54]

    , keywords =

    An Efficient Framework for Automatic Carbon Star Detection Using Machine Learning Techniques on LAMOST DR9 and Gaia DR3. , keywords =. doi:10.1088/1538-3873/ae3f57 , adsurl =

    doi

  46. [55]

    , keywords =

    Carbon Stars from Gaia Data Release 3 and the Space Density of Dwarf Carbon Stars. , keywords =. doi:10.3847/1538-4357/adba53 , archivePrefix =. 2501.18763 , primaryClass =

    doi

  47. [56]

    , keywords =

    Inclination Bias in Techniques Used to Identify Be Star Candidates. , keywords =. doi:10.3847/1538-4357/ae3fa1 , archivePrefix =. 2601.22014 , primaryClass =

    doi

  48. [57]

    arXiv e-prints , keywords =

    A robust method for identifying Be stars in the LAMOST Data Release 11 based on Deep-learning approach. arXiv e-prints , keywords =. doi:10.48550/arXiv.2511.02221 , archivePrefix =. 2511.02221 , primaryClass =

    doi

  49. [58]

    , keywords =

    A Catalog of H Emission-line Stars and 785 Newly Identified Young Stellar Object Candidates from LAMOST Based on a Deep Learning Method. , keywords =. doi:10.3847/1538-4365/adf4e6 , adsurl =

    doi

  50. [59]

    New methods: faintest WR stars

    A near-infrared survey of the inner Galactic plane for Wolf-Rayet stars - III. New methods: faintest WR stars. , keywords =. doi:10.1093/mnras/stv1342 , archivePrefix =. 1403.0975 , primaryClass =

    doi arXiv

  51. [60]

    Distances and absolute magnitudes

    Unlocking Galactic Wolf-Rayet stars with Gaia DR2 - I. Distances and absolute magnitudes. , keywords =. doi:10.1093/mnras/stz3614 , archivePrefix =. 1912.10125 , primaryClass =

    1912 doi

  52. [61]

    , keywords =

    The Sixth Catalogue of Galactic Wolf-Rayet Stars - Their Past and Present. , keywords =. doi:10.1007/BF00173260 , adsurl =

    doi

  53. [62]

    , year = 2001, month = feb, volume =

    The VIIth catalogue of galactic Wolf-Rayet stars. , year = 2001, month = feb, volume =. doi:10.1016/S1387-6473(00)00112-3 , adsurl =

    2001 doi

  54. [63]

    Encyclopedia of Astrophysics, Volume 2 , year = 2026, volume =

    Wolf─Rayet stars. Encyclopedia of Astrophysics, Volume 2 , year = 2026, volume =. doi:10.1016/B978-0-443-21439-4.00031-6 , adsurl =

    2026 doi

  55. [64]

    Academie des Sciences Paris Comptes Rendus , keywords =

    Spectroscopie stellaire. Academie des Sciences Paris Comptes Rendus , keywords =

  56. [65]

    , year = 1998, month = jan, volume =

    Carbon Stars. , year = 1998, month = jan, volume =. doi:10.1146/annurev.astro.36.1.369 , adsurl =

    1998 doi

  57. [66]

    Expanded edition

    Catalogue of the central stars of planetary nebulae. Expanded edition. , keywords =. doi:10.1051/0004-6361/202037998 , archivePrefix =. 2005.10368 , primaryClass =

    2005 doi

  58. [67]

    , keywords =

    Physical Properties of Wolf-Rayet Stars. , keywords =. doi:10.1146/annurev.astro.45.051806.110615 , archivePrefix =. astro-ph/0610356 , primaryClass =

    doi

  59. [68]

    Candidate selection and the follow-up of the bright sample

    Search for new Galactic Wolf Rayet stars using Gaia DR3: I. Candidate selection and the follow-up of the bright sample. , keywords =. doi:10.1051/0004-6361/202453359 , archivePrefix =. 2502.17695 , primaryClass =

    doi

  60. [69]

    No. 471. Catalogue and bibliography of stars of classes B and A whose spectra have bright hydogen lines. Contributions from the Mount Wilson Observatory / Carnegie Institution of Washington , year = 1933, month = jan, volume =

    1933

  61. [70]

    , year = 1968, month = jan, volume =

    A revised spectral classification system and a new catalogue for galactic Wolf-Rayet stars. , year = 1968, month = jan, volume =. doi:10.1093/mnras/138.1.109 , adsurl =

    1968 doi

  62. [71]

    , keywords =

    Neutral and ionized emission lines in the type II Cepheid W Virginis. , keywords =. doi:10.1051/0004-6361/201015912 , adsurl =

    doi

  63. [72]

    , keywords =

    Notes on the Radial Velocities of 14 O Stars and the Emission Lines in Their Spectra. , keywords =. doi:10.1086/169445 , adsurl =

    doi

  64. [73]

    , keywords =

    Photometric Variability of the Be Star Population. , keywords =. doi:10.3847/1538-3881/aa6396 , archivePrefix =. 1609.08449 , primaryClass =

    doi arXiv

  65. [74]

    , keywords =

    A Catalog of 45,206 H Emission-line Stars from LAMOST MRS DR7. , keywords =. doi:10.3847/1538-4365/ae1a87 , archivePrefix =. 2601.05779 , primaryClass =

    doi

  66. [75]

    Research in Astronomy and Astrophysics , keywords =

    Spectroscopic Study of Late-type Emission-line Stars Using the Data from LAMOST DR6. Research in Astronomy and Astrophysics , keywords =. doi:10.1088/1674-4527/ad8f9b , archivePrefix =. 2410.17753 , primaryClass =

    doi

  67. [76]

    doi:10.1007/978-0-387-68995-1 , adsurl =

    The Astrophysics of Emission-Line Stars. doi:10.1007/978-0-387-68995-1 , adsurl =

    doi

  68. [77]

    , year = 1950, month = jul, volume =

    Additional Stars whose Spectra have a Bright H Line. , year = 1950, month = jul, volume =. doi:10.1086/145319 , adsurl =

    1950 doi

  69. [78]

    , year = 1970, month = jan, volume =

    A catalogue of early-type stars whose spectra have shown emission lines. , year = 1970, month = jan, volume =

    1970

  70. [79]

    , year = 1931, month = mar, volume =

    On the Origin of Bright Lines in Spectra of Stars of Class B. , year = 1931, month = mar, volume =. doi:10.1086/143298 , adsurl =

    1931 doi

  71. [80]

    Astronomy Reports , keywords =

    X-Ray Binaries with Be Stars. Astronomy Reports , keywords =. doi:10.1134/S1063772925702105 , adsurl =

    doi

  72. [81]

    , keywords =

    Be/X-ray binaries. , keywords =. doi:10.1007/s10509-010-0575-8 , archivePrefix =. 1101.5036 , primaryClass =

    doi arXiv

  73. [82]

    , keywords =

    A Search for Be Stars in Multiple Systems within the Solar Neighborhood. , keywords =. doi:10.3847/1538-4357/ae0731 , archivePrefix =. 2509.19286 , primaryClass =

    doi

  74. [83]

    Encyclopedia of Astrophysics , year = 2026, volume =

    Classical Be stars. Encyclopedia of Astrophysics , year = 2026, volume =. doi:10.1016/B978-0-443-21439-4.00042-0 , archivePrefix =. 2411.06882 , primaryClass =

    2026 doi

  75. [84]

    Rapidly rotating B stars with viscous Keplerian decretion disks

    Classical Be stars. Rapidly rotating B stars with viscous Keplerian decretion disks. , keywords =. doi:10.1007/s00159-013-0069-0 , archivePrefix =. 1310.3962 , primaryClass =

    doi arXiv

  76. [85]

    , keywords =

    Classical Be Stars. , keywords =. doi:10.1086/378307 , adsurl =

    doi

  77. [86]

    , keywords =

    The Be Stars. , keywords =. doi:10.1007/BF00212356 , adsurl =

    doi

  78. [87]

    Secchi, Directors der Sternwarte des Collegio Romano, an den Herausgeber

    Schreiben des Herrn Prof. Secchi, Directors der Sternwarte des Collegio Romano, an den Herausgeber. Astronomische Nachrichten , year = 1866, month = oct, volume =. doi:10.1002/asna.18670680405 , adsurl =

    doi

  79. [88]

    , keywords =

    Galactic runaway O and Be stars found using Gaia DR3. , keywords =. doi:10.1051/0004-6361/202346613 , archivePrefix =. 2311.01827 , primaryClass =

    doi

  80. [89]

    , keywords =

    The SPHEREx Ices Investigation: An Overview. , keywords =. doi:10.3847/1538-4357/ae53e0 , adsurl =

    doi

  81. [90]

    , keywords =

    A three-dimensional classification for WN stars. , keywords =. doi:10.1093/mnras/281.1.163 , adsurl =

    doi

  82. [91]

    , keywords =

    Spectrophotometry of Wolf-Rayet Stars: Intrinsic Colors and Absolute Magnitudes. , keywords =. doi:10.1086/114868 , adsurl =

    doi

  83. [92]

    , keywords =

    The Be Star Spectra (BeSS) Database. , keywords =. doi:10.1088/0004-6256/142/5/149 , adsurl =

    doi

  84. [93]

    Journal of Machine Learning Research , year =

    Laurens van der Maaten and Geoffrey Hinton , title =. Journal of Machine Learning Research , year =

  85. [94]

    SF2A-2018: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics , year = 2018, editor =

    The BeSS database: a fruitful professional-amateur collaboration. SF2A-2018: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics , year = 2018, editor =. doi:10.48550/arXiv.1811.05261 , archivePrefix =. 1811.05261 , primaryClass =

    2018 doi arXiv

  86. [95]

    , keywords =

    Star formation and accretion rates within 500 pc as traced by Gaia DR3 XP spectra. , keywords =. doi:10.1051/0004-6361/202453539 , archivePrefix =. 2505.04699 , primaryClass =

    doi

  87. [96]

    Analysis of the Gaia BP/RP spectra using the General Stellar Parameterizer from Photometry

    Gaia Data Release 3. Analysis of the Gaia BP/RP spectra using the General Stellar Parameterizer from Photometry. , keywords =. doi:10.1051/0004-6361/202243462 , archivePrefix =. 2206.06138 , primaryClass =

    doi

  88. [97]

    , keywords =

    Spectrophotometric Libraries, Revised Photonic Passbands, and Zero Points for UBVRI, Hipparcos, and Tycho Photometry. , keywords =. doi:10.1086/664083 , archivePrefix =. 1112.2698 , primaryClass =

    doi arXiv

  89. [98]

    Summary of the contents and survey properties

    Gaia Early Data Release 3. Summary of the contents and survey properties. , keywords =. doi:10.1051/0004-6361/202039657 , archivePrefix =. 2012.01533 , primaryClass =

    2012 doi

  90. [99]

    , keywords =

    A Gaia DR2 view of the open cluster population in the Milky Way. , keywords =. doi:10.1051/0004-6361/201833476 , archivePrefix =. 1805.08726 , primaryClass =

    doi arXiv

  91. [100]

    , keywords =

    Clusters and mirages: cataloguing stellar aggregates in the Milky Way. , keywords =. doi:10.1051/0004-6361/201936691 , archivePrefix =. 1911.07075 , primaryClass =

    1911 doi

  92. [101]

    , keywords =

    Painting a portrait of the Galactic disc with its stellar clusters. , keywords =. doi:10.1051/0004-6361/202038192 , archivePrefix =. 2004.07274 , primaryClass =

    2004 doi

  93. [102]

    , keywords =

    The Relationship between Infrared, Optical, and Ultraviolet Extinction. , keywords =. 1989. doi:10.1086/167900 , adsurl =

    1989 doi

  94. [103]

    , keywords =

    Internal calibration of Gaia BP/RP low-resolution spectra. , keywords =. doi:10.1051/0004-6361/202141249 , archivePrefix =. 2106.01752 , primaryClass =

    doi

  95. [104]

    , keywords =

    Hunting for open clusters in Gaia DR2: 582 new open clusters in the Galactic disc. , keywords =. doi:10.1051/0004-6361/201937386 , archivePrefix =. 2001.07122 , primaryClass =

    2001 doi

  96. [105]

    , keywords =

    Hunting for open clusters in Gaia EDR3: 628 new open clusters found with OCfinder. , keywords =. doi:10.1051/0004-6361/202142568 , archivePrefix =. 2111.01819 , primaryClass =

    doi

  97. [106]

    Astrophysical parameters inference system (Apsis)

    Gaia Data Release 3. Astrophysical parameters inference system (Apsis). I. Methods and content overview. , keywords =. doi:10.1051/0004-6361/202243688 , archivePrefix =. 2206.05864 , primaryClass =

    doi

  98. [107]

    , keywords =

    Stellar masses and mass ratios for Gaia open cluster members. , keywords =. doi:10.1051/0004-6361/202557529 , archivePrefix =. 2512.10616 , primaryClass =

    doi

  99. [108]

    Revisiting the viscous disk model and updated disk masses

    Modeling protoplanetary disk SEDs with artificial neural networks. Revisiting the viscous disk model and updated disk masses. , keywords =. doi:10.1051/0004-6361/202038352 , archivePrefix =. 2009.03323 , primaryClass =

    2009 doi

  100. [109]

    VizieR Online Data Catalog , keywords =

    VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). VizieR Online Data Catalog , keywords =

    2003

  101. [110]

    Processing and validation of BP/RP low-resolution spectral data

    Gaia Data Release 3. Processing and validation of BP/RP low-resolution spectral data. , keywords =. doi:10.1051/0004-6361/202243680 , archivePrefix =. 2206.06143 , primaryClass =

    doi

  102. [111]

    Gaia Data Release 3. Apsis. II. Stellar parameters. , keywords =. doi:10.1051/0004-6361/202243919 , archivePrefix =. 2206.05992 , primaryClass =

    doi

  103. [112]

    New uvby calibrations and rediscussion of stellar ages, the G dwarf problem, age-metallicity diagram, and heating mechanisms of the disk

    The Geneva-Copenhagen survey of the Solar neighbourhood II. New uvby calibrations and rediscussion of stellar ages, the G dwarf problem, age-metallicity diagram, and heating mechanisms of the disk. , keywords =. doi:10.1051/0004-6361:20077221 , archivePrefix =. 0707.1891 , pri...

    doi arXiv

  104. [113]

    arXiv e-prints , keywords =

    Survey for Distant Stellar Aggregates in Galactic Disk: Detecting Two Thousand Star Clusters and Candidates, along with the Dwarf Galaxy IC10. arXiv e-prints , keywords =

  105. [114]

    Improving the open cluster census. II. An all-sky cluster catalogue with Gaia DR3. , keywords =. doi:10.1051/0004-6361/202346285 , archivePrefix =. 2303.13424 , primaryClass =

    doi

  106. [115]

    , keywords =

    Gaia broad band photometry. , keywords =. doi:10.1051/0004-6361/201015441 , archivePrefix =. 1008.0815 , primaryClass =

    doi arXiv

  107. [116]

    Cross-match with external catalogues: algorithms and results

    Gaia Data Release 2. Cross-match with external catalogues: algorithms and results. , keywords =. doi:10.1051/0004-6361/201834142 , archivePrefix =. 1808.09151 , primaryClass =

    doi arXiv

  108. [117]

    External calibration of BP/RP low-resolution spectroscopic data

    Gaia Data Release 3. External calibration of BP/RP low-resolution spectroscopic data. , keywords =. doi:10.1051/0004-6361/202243880 , archivePrefix =. 2206.06205 , primaryClass =

    doi

  109. [118]

    , keywords =

    Constraining the Age-Activity Relation for Cool Stars: The Sloan Digital Sky Survey Data Release 5 Low-Mass Star Spectroscopic Sample. , keywords =. doi:10.1088/0004-6256/135/3/785 , archivePrefix =. 0712.1590 , primaryClass =

    doi arXiv

  110. [119]

    Chromospheric lines in red dwarf flare stars. III. , keywords =

  111. [120]

    , keywords =

    Gaia DR2 study of Herbig Ae/Be stars. , keywords =. doi:10.1051/0004-6361/201832870 , archivePrefix =. 1808.00476 , primaryClass =

    doi arXiv

  112. [121]

    , keywords =

    The INT Photometric H Survey of the Northern Galactic Plane (IPHAS). , keywords =. doi:10.1111/j.1365-2966.2005.09330.x , archivePrefix =. astro-ph/0506726 , primaryClass =

    2005 doi

  113. [122]

    , keywords =

    Catalogue of H-alpha emission stars in the Northern Milky Way. , keywords =. doi:10.1051/aas:1999101 , adsurl =

    doi

  114. [123]

    , keywords =

    Observations of southern emission-line stars. , keywords =. doi:10.1086/190369 , adsurl =

    doi

  115. [124]

    A machine learning approach to Gaia DR2

    Catalogue of new Herbig Ae/Be and classical Be stars. A machine learning approach to Gaia DR2. , keywords =. doi:10.1051/0004-6361/202037731 , archivePrefix =. 2005.01727 , primaryClass =

    2005 doi

  116. [125]

    , keywords =

    The chemistry of disks around T Tauri and Herbig Ae/Be stars. , keywords =. doi:10.1051/0004-6361/201732518 , archivePrefix =. 1803.09450 , primaryClass =

    doi arXiv

  117. [126]

    , keywords =

    ISO spectroscopy of circumstellar dust in the Herbig Ae systems AB Aur and HD 163296. , keywords =. doi:10.48550/arXiv.astro-ph/0002440 , archivePrefix =. astro-ph/0002440 , primaryClass =

    doi arXiv

  118. [127]

    , keywords =

    Tracing Accretion onto Herbig Ae/Be Stars Using the Br Line. , keywords =. doi:10.3847/1538-4357/ac450a , archivePrefix =. 2112.10428 , primaryClass =

    doi

  119. [128]

    , keywords =

    Probing the circumstellar structures of T Tauri stars and their relationship to those of Herbig stars. , keywords =. doi:10.1111/j.1365-2966.2005.08969.x , archivePrefix =. astro-ph/0502535 , primaryClass =

    2005 doi

  120. [129]

    Emission-Line Studies of Young Stars. II. The Herbig Ae/Be Stars. , keywords =. doi:10.1086/191716 , adsurl =

    doi

  121. [130]

    , keywords =

    The VST Photometric H Survey of the Southern Galactic Plane and Bulge (VPHAS+). , keywords =. doi:10.1093/mnras/stu394 , archivePrefix =. 1402.7024 , primaryClass =

    doi arXiv

  122. [131]

    , keywords =

    Classical Be Stars and Classical Be Star Binaries from LAMOST DR12. , keywords =. doi:10.3847/1538-4365/ae450d , archivePrefix =. 2601.12789 , primaryClass =

    doi arXiv

  123. [132]

    , keywords =

    1000 cataclysmic variables from the Catalina Real-time Transient Survey. , keywords =. doi:10.1093/mnras/stu1377 , archivePrefix =. 1407.1907 , primaryClass =

    1907 doi arXiv

  124. [133]

    , keywords =

    The GALAH survey: characterization of emission-line stars with spectral modelling using autoencoders. , keywords =. doi:10.1093/mnras/staa2524 , archivePrefix =. 2006.03062 , primaryClass =

    2006 doi

  125. [134]

    Research in Astronomy and Astrophysics , keywords =

    A catalog of early-type emission-line stars and H line profiles from LAMOST DR2. Research in Astronomy and Astrophysics , keywords =. doi:10.1088/1674-4527/16/9/138 , archivePrefix =. 1604.03704 , primaryClass =

    doi arXiv

  126. [135]

    , keywords =

    The Herbig Ae/Be stars associated with nebulosity. , keywords =

  127. [136]

    Research in Astronomy and Astrophysics , keywords =

    Discovery of 2716 hot emission-line stars from LAMOST DR5. Research in Astronomy and Astrophysics , keywords =. doi:10.1088/1674-4527/21/11/288 , archivePrefix =. 2108.08025 , primaryClass =

    doi

  128. [137]

    , keywords =

    The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance. , keywords =. doi:10.1088/0004-6256/140/6/1868 , archivePrefix =. 1008.0031 , primaryClass =

    doi arXiv

  129. [138]

    , keywords =

    The Two Micron All Sky Survey (2MASS). , keywords =. doi:10.1086/498708 , adsurl =

    doi

  130. [139]

    , keywords =

    Exploring the short-term variability of H and H emissions in a sample of M dwarfs. , keywords =. doi:10.1093/mnras/stad2222 , archivePrefix =. 2307.11574 , primaryClass =

    doi

  131. [140]

    A validation of Gaia DR3 data using the LAMOST OBA emission catalogue

    Emission line star catalogues post-Gaia DR3. A validation of Gaia DR3 data using the LAMOST OBA emission catalogue. , keywords =. doi:10.1051/0004-6361/202244353 , archivePrefix =. 2209.13221 , primaryClass =

    doi

  132. [141]

    , keywords =

    Catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects (Seventh edition). , keywords =. doi:10.1051/0004-6361:20030330 , archivePrefix =. astro-ph/0301444 , primaryClass =

    doi arXiv

  133. [142]

    , keywords =

    A Comprehensive Correction of the Gaia DR3 XP Spectra. , keywords =. doi:10.3847/1538-4365/ad18b1 , archivePrefix =. 2401.12006 , primaryClass =

    doi

  134. [143]

    The UV Legacy Library of Young Stars as Essential Standards (ULLYSES) Large Director's Discretionary Program with Hubble. I. Goals, Design, and Initial Results. , keywords =. doi:10.3847/1538-4357/adc45b , archivePrefix =. 2504.05446 , primaryClass =

    doi

  135. [144]

    Cataclysmic Variables from the Sloan Digital Sky Survey. VIII. The Final Year (2007-2008). , keywords =. doi:10.1088/0004-6256/142/6/181 , archivePrefix =. 1109.6349 , primaryClass =

    2007 doi arXiv

  136. [145]

    , keywords =

    Spectroscopic study of Herbig Ae/Be stars in the Galactic anti-centre region from LAMOST DR5. , keywords =. doi:10.1093/mnras/stad2067 , archivePrefix =. 2307.02917 , primaryClass =

    doi

  137. [146]

    , keywords =

    The Gaia mission. , keywords =. doi:10.1051/0004-6361/201629272 , archivePrefix =. 1609.04153 , primaryClass =

    doi arXiv

  138. [147]

    Photometric content and validation

    Gaia Early Data Release 3. Photometric content and validation. , keywords =. doi:10.1051/0004-6361/202039587 , archivePrefix =. 2012.01916 , primaryClass =

    2012 doi

  139. [148]

    Elementary Astronomy , year = 1959, editor =

    Elementary Astronomy. Elementary Astronomy , year = 1959, editor =

    1959

  140. [149]

    Astronomical Data Analysis Software and Systems XIV , year = 2005, editor =

    TOPCAT & STIL: Starlink Table/VOTable Processing Software. Astronomical Data Analysis Software and Systems XIV , year = 2005, editor =

    2005

  141. [150]

    Summary of the content and survey properties

    Gaia Data Release 3. Summary of the content and survey properties. , keywords =. doi:10.1051/0004-6361/202243940 , archivePrefix =. 2208.00211 , primaryClass =

    doi

  142. [151]

    , keywords =

    Gaia EDR3 view on galactic globular clusters. , keywords =. doi:10.1093/mnras/stab1475 , archivePrefix =. 2102.09568 , primaryClass =

    doi

  143. [152]

    , keywords =

    Analysing spectral lines in Gaia low-resolution spectra. , keywords =. doi:10.1051/0004-6361/202244764 , archivePrefix =. 2211.06946 , primaryClass =

    doi

  144. [153]

    A standard stellar library for evolutionary synthesis. III. Metallicity calibration. , keywords =. doi:10.1051/0004-6361:20011493 , archivePrefix =. astro-ph/0110559 , primaryClass =

    doi arXiv

  145. [154]

    , year = 1998, month = jan, volume =

    Herbig Ae/Be Stars. , year = 1998, month = jan, volume =. doi:10.1146/annurev.astro.36.1.233 , adsurl =

    1998 doi

  146. [155]

    Summary of the contents and survey properties

    Gaia Data Release 2. Summary of the contents and survey properties. , keywords =. doi:10.1051/0004-6361/201833051 , archivePrefix =. 1804.09365 , primaryClass =

    doi arXiv

  147. [156]

    Cool Stars, Stellar Systems, and the Sun , year = 1990, editor =

    Ca II emission from pre-main sequence stars. Cool Stars, Stellar Systems, and the Sun , year = 1990, editor =

    1990

  148. [157]

    , keywords =

    New Herbig Ae/Be stars confirmed via high-resolution optical spectroscopy. , keywords =. doi:10.1051/0004-6361/200913800 , archivePrefix =. 1004.3386 , primaryClass =

    doi arXiv

  149. [158]

    , keywords =

    The spectrum of the young star HD 100546 observed with the Infrared Space Observatory. , keywords =

  150. [159]

    Disks around the precursors of young Herbig Ae/Be stars

    What happened before?. Disks around the precursors of young Herbig Ae/Be stars. , keywords =. doi:10.1051/0004-6361/202039802 , archivePrefix =. 2104.14212 , primaryClass =

    doi

  151. [160]

    , year = 1972, month = apr, volume =

    The Nature of the Herbig Ae- and Be-TYPE Stars Associated with Nebulosity. , year = 1972, month = apr, volume =. doi:10.1086/151425 , adsurl =

    1972 doi

  152. [161]

    arXiv e-prints , keywords =

    Millions of Main-Sequence Binary Stars from Gaia BP/RP Spectra. arXiv e-prints , keywords =. doi:10.48550/arXiv.2507.09622 , archivePrefix =. 2507.09622 , primaryClass =

    doi

  153. [162]

    , year = 1974, month = aug, volume =

    Infrared observations of Be stars from 2.3 to 19.5 microns. , year = 1974, month = aug, volume =. doi:10.1086/153008 , adsurl =

    1974 doi

Pith tools

Reviewed June 26, 2026 · model on record in the stance chip above.