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Simbad is the reference database for identification and bibliography of astronomical objects. It contains identifications, `basic data', bibliography, and selected observational measurements for several million astronomical objects. Simbad is developed and maintained by CDS, Strasbourg. Building the database contents is achieved with the help of several contributing institutes. Scanning the bibliography is the result of the collaboration of CDS with bibliographers in Observatoire de Paris (DASGAL), Institut d'Astrophysique de Paris, and Observatoire de Bordeaux. When selecting catalogues and tables for inclusion, priority is given to optimal multi-wavelength coverage of the database, and to support of research developments linked to large projects. In parallel, the systematic scanning of the bibliography reflects the diversity and general trends of astronomical research. A WWW interface to Simbad is available at: http://simbad.u-strasbg.fr/Simbad
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Cited by 39 Pith papers
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Mitigating Charge Migration in JWST NIRISS Reveals That KELT-7 b is a Metal-enriched Ultra-hot Jupiter Orbiting a Young Metal-rich Star
Correcting NIRISS charge migration reveals KELT-7 b as a metal-enriched (~92x solar) ultra-hot Jupiter with H2O, CO2 and TiO but no H- or clouds, orbiting a young metal-rich star.
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Direct Images of the Cosmic Web of Intergalactic and Circumgalactic Gas in the Distant Universe
Wide-field narrow-band imaging with the Condor Array Telescope finds faint emission attributed to the cosmic web, and stacking thousands of galaxies reveals circumgalactic gas and dust.
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Exploring the long-term temporal variability in polarization through multi-epoch optical spectro-polarimetry - Part II: A sample of symbiotic and red-giant stars
Multi-epoch spectropolarimetry of 6 symbiotic and 18 red giant stars shows frequent continuum polarization variability, with Hα line polarization detected in only one symbiotic star, UV Aur.
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A clear detection of proper motion confirms that the claimed $\mathbf{z\simeq32}$ galaxy candidate, "Capotauro'', is a Y-type brown dwarf
Capotauro, previously a candidate galaxy at z about 32, is confirmed as a Y-type brown dwarf near 730 pc by a 6.2 sigma proper motion measured over 3.5 years.
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The symphony of pulsations and binarity among massive stars using HERMES spectroscopy and TESS photometry
An ensemble analysis of 873 O/B stars shows photometric variability in >93%, pulsations in ~82%, and evidence of binarity in at least 14%, including 30 newly discovered eclipsing binaries.
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Cataclysmic variables from SRG/eROSITA: new systems from eRASS1
A Random Forest plus Gaia/eROSITA match yields 156 spectroscopically confirmed CVs from eRASS1, spanning subtypes, periods, and luminosities, with the method outperforming several published alternatives.
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Discovery of a radio-flaring M dwarf in a commensal transient search of the LADUMA field
MeerKAT LADUMA monitoring reveals a radio-flaring M3.5 dwarf, LP 888-63, with 13 detections in 41 epochs at 816 MHz.
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Searching for $\gamma$-ray emission from a bona fide Compact Symmetric Object sample: a $\gamma$-ray signal near GB6 J0906+4124
No bona fide CSO in a 73-source sample is firmly detected in 16 years of Fermi-LAT data; a ~4σ signal near GB6 J0906+4124 is a plausible but unconfirmed counterpart.
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Improving reddening estimates for RR Lyrae stars in the Gaia bands: a machine learning approach to the PAC(Z) relation
New SFS-based linear relations predict Gaia intrinsic colors of RRab and RRc RR Lyrae from period, amplitude, and metallicity, yielding reddening and AG estimates that are cross-checked on clusters and dwarf galaxies.
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Benchmark Brown Dwarf Systems I: Chemical Abundance Analysis of FGK Stars with Wide-Separation Brown Dwarf Companions Using PEPSI
Uniform BACCHUS abundances from PEPSI spectra of 32 FGK brown-dwarf hosts show C/O dispersion, predict silicate cloud species via Mg/Si, and test the [Y/Mg] age clock.
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Emergence of high-mass stars in complex fiber networks (EMERGE) VI. Turbulence dissipation and the formation of dense fibers
In Orion, turbulence dissipates in high-shear regions near dense fibers, so the transition to coherence occurs at the fiber level before cores form.
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The Manticore Project II: Bayesian digital twins of cosmic structure across the SDSS and BOSS volumes
Manticore-Deep uses tiled Bayesian field-level inference on SDSS and BOSS data to produce posterior ensembles of 3D cosmic fields that are consistent with LCDM and validated by 7.4σ CMB lensing and 3.5σ kSZ detections.
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GeV {\gamma}-ray emission in the low-mass star-forming region AFGL 490
Discovery of extended GeV gamma-ray emission from AFGL 490, with the protostellar jet identified as the likely particle accelerator rather than stellar winds.
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A bright wideband radio burst from the isolated neutron star 2XMM J104608.7$-$594306
A second coherent radio burst spanning 704-4032 MHz with spectral index -2.18, 54% linear and 22% circular polarization, and an orthogonal polarization angle jump was detected from 2XMM J104608.7-594306, showing rare ...
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Bounds on Axions-Like Particles Shining in the Ultra-Violet
Using archival HST far-UV spectra, the authors exclude gaγ above 10^-12 GeV^-1 for ALP dark matter masses 14.4-22.2 eV, about one order of magnitude stronger than earlier limits.
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STDWeb: Simple Transient Detection pipeline for the Web
The paper introduces STDWeb, an open-source web application that performs astrometric and photometric calibration, image subtraction, and transient detection on arbitrary FITS images.
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A search for circumstellar gas in pre-main-sequence debris discs using absorption spectroscopy
Absorption spectroscopy of 130 young debris-disc hosts yields two new circumstellar-gas detections (TYC7879-1373-1 stable; HIP30414 variable/accreting), both pre-MS and <5 Myr, bringing the <10 Myr total to eight.
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A catalogue of high angular resolution and contrast polarimetric maps of 45 nearby AGB stars with SPHERE/ZIMPOL
Uniformly reduced SPHERE/ZIMPOL polarization maps of 45 AGB stars reveal 16 resolved dust envelopes, three new, but the proposed target-selection criteria are partially circular and in-sample.
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Effective temperatures estimation of low-mass stars and identification of T Tauri stars in LAMOST DR10 using machine learning
A GBM regressor trained on PHOENIX synthetic spectra estimates Teff for 1,733,852 LAMOST DR10 low-mass spectra, and a robust logistic classifier identifies 2,534 T Tauri star candidates.
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Kepler Image-Subtracted Light Curves and Variable Star Catalog of NGC 6819
Kepler image-subtracted photometry yields 81,498 light curves and a catalog of 87 periodic variable candidates in NGC 6819, including 26 newly discovered ones.
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Observing a 542-day transiting giant with large TTVs: The 2025 transit of HIP 41378 f and new constraints on the outer system
New 2025 transit timing of HIP 41378 f shows a 7-hour early arrival consistent with TTVs; N-body modeling with TRADES refines ephemerides for planets d, e, and f.
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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
Gaia-HELIX is a new catalogue of 28,394 bona-fide Hα emitters identified in Gaia DR3 XP spectra, after removing 95% of initial candidates that were M-type star mimics.
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Milky Way's warped disc traced by AGB stars
C-rich AGB stars trace the Galactic warp with larger amplitudes than Cepheids at intermediate ages of about 1 Gyr.
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Temporal evolution of the periodic GeV signal from 4FGL J1913.2+0512 and analysis of the SS 433 / W50 lobes
Fermi LAT data analysis detects a time-evolving ~162-day periodic GeV signal from 4FGL J1913.2+0512 linked to SS 433, prominent in 2008-2018 but diminished afterward, indicating multi-year evolution in gamma-ray produ...
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Exploring Non-minimal coupling using ultra-diffuse galaxies
A Bayesian Jeans analysis of three ultra-diffuse galaxies finds no preference for a non-minimal dark-matter-gravity coupling and yields weak upper limits on its length scale.
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Low-frequency observations of low-mass binary systems with neutron star candidates
A 111 MHz archival search finds no periodic radio emission from five compact-object binaries and one ambiguous 13 Jy, 0.13 s burst toward J1527+3536.
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Search for spatial coincidences between galaxy mergers and Fermi-LAT 4FGL-DR4 sources
Twenty-one galaxy mergers show statistically significant spatial coincidences with Fermi-LAT gamma-ray sources, including five unidentified gamma-ray objects.
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Blue Loops, Cepheids, and Forays into Axions
Axion energy loss can erase the blue loop stage in MESA models of 5 to 9 solar mass stars, giving new bounds on the axion-photon coupling from Cepheids and stronger projected bounds for heavier Cepheids.
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Constraining Axion Mass through Gamma-ray Observations of Pulsars
Under a thermally optimistic 20 MeV core model, nine years of Fermi data on 17 dark pulsars set an axion mass upper limit of 9.6e-3 eV, but realistic cooler cores suppress the signal to undetectability.
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SN 2025aico: Early observations of a faint Type IIb supernova with a low-mass envelope
SN 2025aico is a low-luminosity Type IIb from a compact He star (M_env≈0.01 M⊙, R_env≈6–10 R⊙) with M_Ni≈0.033 M⊙, M_ej≈2.8 M⊙ and weak-to-moderate 56Ni mixing.
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Infrared-enhanced Photometric Redshifts for the Dark Energy Survey Y6 Gold catalogue
DES+WISE W1/W2 photometry significantly reduces photo-z scatter, bias and outliers versus optical-only DES, while VHS adds only marginal gains at z<1.5.
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TESS light curves and surface activity in two low-mass eclipsing binaries: NSVS 01031772 and 2MASS J04100497+2931023
TESS and ground-based photometry of two low-mass eclipsing binaries yield improved stellar parameters, evidence for tertiary companions via the light-time effect, and a flare frequency of one per 40 hours for NSVS 01031772.
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Chemical Abundances of the Bioessential Elements C, O and S, and the Refractory Elements Fe and Ni, in Solar-type Exoplanet-hosting Stars from HARPS North and South
Observational study of 290 exoplanet-host stars finds higher C, O, S, Fe, Ni abundances in giant-planet hosts than small-planet hosts, with C/O ratios, hot/warm differences, and mass correlations that vary by subpopulation.
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The VMC survey -- LV. The coherent expansion of the SMC
Improved VMC proper motions show SMC expansion along SE-NW axes consistent with LMC tides, radial inward motions with no rotation, and northward motion in older RGB stars from a prior interaction.
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Nuclear Activity and Host Galaxy Properties of Low-Luminosity AGN Identified from VLA Observations
VLA radio-selected LLAGN show 84% optical, 63% X-ray, and 13% infrared detection rates, with black holes ~0.7 dex smaller, accretion rates ~4.2 dex lower, and host galaxies ~0.3 dex lower in stellar mass with ~0.5 dex...
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Spectroscopic Bolometric Corrections and Empirical Zero-point Constants of \textit{Gaia} Magnitudes, $G$, $G_{\rm BP}$, and $G_{\rm RP}$, from \textit{Gaia} XP Spectra
Empirical zero-point constants for Gaia bolometric corrections are derived as weighted averages 0.8677, 1.0449, and 2.0510 mag for G, GBP, and GRP from 88 stars, yielding corresponding magnitude zero-points via IAU de...
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Study of the physical and chemical properties of dense clumps at different evolutionary stages in several regions of massive star and stellar cluster formation
A survey of 20 dense clumps in five massive star-forming regions finds a strong mass-size correlation, weak dynamical correlations, and hints that magnetic fields around 1 mG help stabilize the most massive clumps.
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Spectroscopic redshifts of selected flat-spectrum radio sources I
New spectroscopic redshifts are reported for six of fifteen bright SMILE flat-spectrum radio sources observed with the Skinakas 1.3 m telescope.
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Searching in HI for Massive Low Surface Brightness Galaxies: II. Completing the UGC Sample
GBT HI observations of 35 UGC LSB galaxies detect 19 and five serendipitous sources, completing the sample with one new massive LSB and mostly unremarkable gas properties.
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