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REVIEW 2 major objections 4 minor 105 references

Spectroscopic Binary Detection as Agent-Callable Tools: Detecting 40,000+ Main-Sequence Binary Candidates from SDSS DR19 APOGEE Spectra

T0 review · 2 major / 4 minor · reviewed 2026-08-12 · deepseek-v4-flash

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Pith's one-line read Packaging the EB18 forward-model binary decomposition as agent-callable tools and a written Skill recovers 41,466 SB2 candidates from 238,205 APOGEE DR19 dwarf spectra at a validated 8.1% control false-positive rate, about fifteen times…

desk verdict A genuinely useful, honestly-caveated SB2 catalog with real reproducibility value; the eccentricity bound is the one claim I'd push back on before it settles. read the letter →

arxiv 2608.10866 v1 pith:VXDBZQ5H submitted 2026-08-11 astro-ph.SR astro-ph.IM

Serat M. Saad , Yuan-Sen Ting This is my paper · ORCID
classification astro-ph.SRastro-ph.IM
keywords spectroscopicbinariesSB2APOGEEforwardmodelingmassratioeccentricityagent-callabletoolsModelContextProtocol
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's central claim is that the operating know-how of a published spectroscopic-binary detection method can be packaged as reusable agent-callable tools, and that this packaging enables a clean reproduction and fifteen-fold expansion of the method's catalog on a new survey release. Run over 238,205 APOGEE DR19 dwarf spectra, the packaged classifier flags 41,466 double-lined binary candidates (17.4%), the largest such APOGEE sample, with per-system mass ratios, component velocities, and Gaia cross-matches. The authors are explicit that this is a candidate list, not a pure catalog: at the 8.1% validated control false-positive rate, roughly 40% of the flagged systems are expected to be single stars, and the multi-epoch supplement provides higher-purity subsamples. A second result is astrophysical: among well-sampled close binaries, near-equal-mass twins show no eccentricity excess relative to non-twins, ruling out at short periods the effect seen for wide twins. If right, the work demonstrates a general path for publishing a method's tacit operating decisions so that agents can carry a survey-scale analysis to new data with only one instrument-specific component rebuilt.

What carries the argument

The load-bearing object is the two-component forward model of Equation (1), $$f_{\rm bin}(\$\lambda$)=\frac{w_1 f_1(\$\lambda$;v_1)+w_2 f_2(\$\lambda$;v_2)}{w_1+w_2},$$ in which two continuum-normalized single-star spectra are summed with isochrone-tied luminosity weights $w_i=R_i^2 B_\lambda(T_{\rm eff,i})$. The secondary's temperature, radius, and luminosity are read off a fixed 4 Gyr solar-scaled MIST isochrone from the primary's labels and a single mass ratio $q$, so the composite adds only three parameters ($q$, $v_1$, $v_2$) to the single-star fit. Detection rests on the fit improvement $\Delta\chi^2=\chi^2_{\rm single}-\chi^2_{\rm binary}$ and the improvement fraction $f_{\rm imp}$, accepted through a sliding ladder recalibrated for this classifier at a fixed control false-positive rate. Around this core, the paper packages the method's eight operating decisions as a written Skill and exposes the computational steps as nine typed tool servers built on the Model Context Protocol, making the deterministic science reproducible under any agent or fixed script.

What would settle it

Take a random subsample of the 41,466 flagged systems that have no Gaia non-single-star solution and RUWE below 1.4, and measure their radial velocities over at least four epochs separated by orbital timescales; if the fraction showing no velocity variation and no persistent line doubling is not consistent with the claimed 8.1% control false-positive rate, the catalog's purity claim fails. For the eccentricity claim, the same multi-epoch velocities with full orbital phase coverage would yield direct per-system eccentricities, and a measured twin-minus-non-twin index difference above +0.15 with tight errors would refute the exclusion of a close-separation twin eccentricity excess.

Watch

Extended reading notes

Core claim

On its own terms, the paper establishes that the EB18 forward-model decomposition can be repackaged as nine typed tool servers plus a written Skill and run as an agent over APOGEE DR19, reproducing and extending EB18's SB2 search at a controlled false-positive rate. The result is a catalog of 41,466 SB2 candidates among 238,205 main-sequence dwarfs (17.4%), with median mass ratio $q=0.91$, cross-matched to Gaia and supplemented by per-visit fits that velocity-confirm 68.5% of multiply-visited SB2. The paper also reports a population result from the best-sampled systems: close twins and matched non-twins have statistically indistinguishable eccentricities, with an index difference $-0.24\pm0.16$, excluding an eccentricity excess of the kind seen at wide separations. It states that the 8.1% control false-positive rate implies close to 40% of the flagged systems are single stars, so the released sample is explicitly a candidate list rather than a pure catalog.

Load-bearing premise

A single fixed 4 Gyr, solar-scaled isochrone is used to convert every primary's labels into the secondary's temperature, radius, and luminosity, even though the searched dwarfs span the disk, bulge, and halo with a range of ages and metallicities; if the true binary population is systematically older or more metal-poor, the recovered mass ratios and the twin eccentricity comparison shift with it.

Editorial extensions

If this is right

  • The 41,466-entry DR19 SB2 catalog is the largest assembled from APOGEE, about fifteen times the DR13 count, and is released with per-system $q$, coadd and visit velocities, Gaia RUWE and non-single-star flags, plus multi-epoch confirmation flags.
  • At the adopted operating point, about 16,000 of the flagged systems are expected to be falsely flagged single stars; cutting on the multi-epoch confirmation flags yields a subsample with 68.5% velocity confirmation among multiply-visited SB2.
  • The multi-epoch supplement adds 519 single-lined velocity variables and identifies 8,981 systems with enough phase coverage to anchor spectroscopic orbits.
  • For close binaries with periods between 6 and 400 days, the eccentricity distribution of twins ($q>0.95$) is not elevated relative to matched non-twins; an index difference of +0.15 or more is excluded at two standard deviations, in contrast to wide twins.
  • The packaged method transfers to a new survey almost unchanged: seven of nine tool servers and all eight Skill decisions carry over, and only the single-star spectral model must be rebuilt for the new instrument.

Reading between the lines

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

  • Editorial inference: because the recovered mass-ratio distribution is also shaped by $q$-dependent completeness and by false positives concentrated near $q\approx1$, the raw twin excess in the released histogram should not be read as an intrinsic multiplicity feature without subtracting the false-positive and completeness corrections, which the catalog's released flags make possible.
  • Editorial inference: the blind-agent asymmetry suggests a testable principle for scientific agents: an agent can rediscover a missing operating decision only when its absence changes an internally measurable statistic, while decisions whose absence only changes a derived quantity require an external calibration target and thus a labeled benchmark in the loop.
  • Editorial inference: if the fixed isochrone age is wrong for the searched population, the recovered $q$ values and the $q>0.95$ twin definition shift; a natural extension is to marginalize over age and metallicity using Gaia parallaxes or asteroseismic ages, converting the candidate catalog into a completeness-corrected multiplicity census.
  • Editorial inference: the same packaging pattern of typed tools plus a written Skill could be applied to other multi-object spectroscopic surveys with different wavelength coverage, potentially yielding homogeneous, cross-survey SB2 samples for population studies.
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Editorial analysis

A structured set of objections, weighed in public.

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

Referee Report

2 major / 4 minor

Summary. This paper packages the El-Badry et al. (2018b) two-component spectral decomposition as a set of MCP tool servers and a written Skill, applies it to 238,205 APOGEE DR19 main-sequence dwarfs, and identifies 41,466 SB2 candidates at an 8.1% control false-positive rate. It releases the candidate catalog with a multi-epoch supplement, reports a median recovered mass ratio q = 0.91, compares the eccentricities of close twins (q > 0.95) against matched non-twins, and performs a two-decision ablation of the Skill. The paper is framed as a demonstration of publishing operating know-how as agent-callable tools.

Significance. If the catalog and benchmark results hold, this is the largest APOGEE SB2 candidate sample to date, and the paper's honesty about the implied ~40% contamination is a strength. The deterministic core, released code, held-out control calibration, real-spectrum injection recovery, and external Gaia cross-checks make the central catalog claim reproducible and well-caveated. The eccentricity comparison is scientifically interesting but is the least secure part of the paper because it depends on an untested equal-noise assumption and on the fixed isochrone. The agent/MCP packaging is a useful community contribution but is not the main scientific deliverable; the catalog and its multi-epoch supplement are.

major comments (2)
  1. [Appendix A; Section 4.5] The differential cancellation argument in Appendix A assumes that a misstated per-epoch dispersion s moves the eccentricity index of the twins and non-twins together. This fails if the effective per-visit RV noise differs between the two samples: near-equal twins have well-measured secondary lines while non-twins have fainter secondaries and larger RV scatter at fixed S/N, and the samples differ in median primary amplitude (11.8 vs 8.8 km/s, Section 4.5). The reweighting matches velocity amplitude and epoch count but not per-visit noise. Since the headline exclusion is alpha_twin - alpha_non-twin > +0.15 at 2-sigma, a differential bias of order 0.2-0.3 in alpha could move the measured -0.24 +/- 0.16 across that boundary. Please state the assumed value of s, test the sensitivity to s, ideally allowing s_twin != s_non-twin, or recast the result as a bound with this systematic explicitly included.
  2. [Section 3.2, Eq. (1); Section 5.2] The fixed 4 Gyr solar-scaled MIST isochrone sets the secondary temperature, luminosity, radius, and flux ratio for all searched dwarfs across the disk, bulge, and halo. Section 5.2 states that the resulting age systematic is not propagated, but the q > 0.95 twin definition used in Section 4.5 and the recovered q distribution both depend on this tie. Please quantify the sensitivity of the median q, the twin fraction, and the eccentricity comparison to isochrone age (e.g., 1 and 10 Gyr) and metallicity, or state these as propagated systematic uncertainties in the released columns.
minor comments (4)
  1. [References] The reference list entry for Virtanen et al. (2020) gives 'Nature Medicine, 17, 261'; SciPy is published in Nature Methods, 17, 261-272.
  2. [Figure 2 caption] The identifier 'sdssid116011140' lacks spacing and should be formatted as a proper SDSS source identifier for readability.
  3. [Section 3.2] The weight w_i = R_i^2 B_lambda(T_eff,i) is described as an 'H-band surface brightness' Planck factor; since B_lambda is the Planck function, please specify the wavelength normalization used to define the band-luminosity weight.
  4. [Table 2 and Data Availability] The Data Availability statement mentions released orbit posterior summaries, but Table 2 does not list the corresponding eccentricity-related columns; a pointer to those supplement columns would help users.

Circularity Check

0 steps flagged · score 0.0 of 10

No significant circularity: the DR19 SB2 catalog is an externally benchmarked application of the EB18 forward model, with out-of-sample threshold calibration, independent Gaia anchors, and no prediction that reduces to a fitted input.

full rationale

The central quantity, the 41,466 SB2 candidates, is produced by a deterministic two-component fit whose acceptance thresholds are calibrated on one half of held-out control stars and validated on the other half, so the 8.1% control false-positive rate is a genuine out-of-sample estimate rather than a fitted value renamed as a prediction. The benchmark positives are the independent DR13 EB18 flags, and the Gaia astrometric and non-single-star tracers are not used in the spectroscopic detection, so the catalog is validated on data the network never saw and on information outside the fitted model. The fixed 4 Gyr solar-scaled MIST isochrone and the single per-epoch velocity dispersion in Appendix A are stated assumptions that limit individual q, secondary-temperature, and eccentricity estimates, but they are inputs to the measurement, not quantities whose values are themselves the claimed result, and there is no equation in the paper in which a reported prediction equals an input by construction. The self-citations (Ting et al. 2019, 2026; Hwang et al. 2022a,b) are contextual or external published results; none is invoked as a uniqueness theorem to forbid alternatives, and the central detection claim does not reduce to them. The acknowledged failure of the three-component census, the unpropagated age systematic, and the upper-bound nature of the injection-recovery completeness are honest limitations that support, rather than negate, the self-contained calibration logic of the paper.

Assumptions & free parameters 5 free parameters · 5 assumptions · 0 invented entities

The ledger shows the catalog's derived quantities rest on a fixed isochrone and a calibrated acceptance ladder, while the eccentricity bound rests on a population prior and an unreported per-epoch noise. No new physical entities are introduced.

free parameters (5)
  • acceptance ladder scale = 0.90
    Both coordinates of the EB18 acceptance ladder are scaled by 0.90 to hit an 8.1% control false-positive rate on one half of held-out controls (Section 3.3), which sets the catalog's size and purity.
  • isochrone age = 4 Gyr (assumed)
    All binaries are modeled with a common 4 Gyr main-sequence age via MIST isochrones (Section 3.2); no age prior or variation is used, affecting q and secondary temperatures.
  • isochrone metallicity = solar (assumed)
    The isochrone tie assumes solar-scaled composition for all systems (Section 3.2), whereas the sample spans disk, bulge, and halo metallicities.
  • per-pixel S/N cap = 200
    Per-pixel signal-to-noise is capped at 200 before fitting (Decision 3, Section 3.4) to prevent underestimated error bars from driving detections; this chosen threshold affects the detection statistic.
  • per-epoch velocity dispersion s = not stated
    Appendix A assumes one per-epoch velocity dispersion for all systems because the archive does not release per-visit uncertainties; the value is not reported, which weakens absolute eccentricity claims.
assumptions (5)
  • domain assumption The Ting et al. (2019) five-label neural network accurately maps stellar labels to normalized APOGEE spectra for the searched dwarf sample.
    The single-star model is the load-bearing ingredient (Section 3.1); the classifier only works if a genuine single star fits the model down to noise.
  • domain assumption EB18's DR13 SB2 flags are reliable positives for benchmarking.
    The benchmark uses 2,344 EB18-flagged SB2 as ground truth (Section 2.2); any errors in the DR13 flags propagate into the reported recovery rates.
  • domain assumption The held-out controls are representative of the single-star population in the full 238,205 dwarf sample.
    The 8.1% FPR measured on matched controls is extrapolated to the roughly 197,000 unflagged dwarfs to estimate about 16,000 false positives (Section 4.2); if the controls are cleaner than the full sample, the contamination estimate is off.
  • domain assumption The eccentricity population follows f(e) proportional to e^alpha.
    The population comparison in Appendix A assumes this functional form for the eccentricity distribution of both twins and non-twins.
  • domain assumption The per-visit velocities follow a single Keplerian with a common noise dispersion s.
    Appendix A models all systems with one per-epoch dispersion because per-visit uncertainties are not released; this underpins the eccentricity likelihoods.

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Cite this review

Pith. "Pith review of Spectroscopic Binary Detection as Agent-Callable Tools: Detecting 40,000+ Main-Sequence Binary Candidates from SDSS DR19 APOGEE Spectra." pith.science (2026). https://pith.science/paper/VXDBZQ5H

@misc{pith2026260810866,
  author       = {Pith},
  title        = {Pith review of: Spectroscopic Binary Detection as Agent-Callable Tools: Detecting 40,000+ Main-Sequence Binary Candidates from SDSS DR19 APOGEE Spectra},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/VXDBZQ5H}},
  note         = {Machine review of arXiv:2608.10866}
}
read the original abstract

Unresolved binaries are common in spectroscopic surveys, and their blended light biases the parameters inferred for them. Methods to detect them exist, but applying one to a new data release is limited mostly by operating know-how that is rarely written down. We package the double-lined spectroscopic binary decomposition of El-Badry et al. (2018b) for reuse on APOGEE spectra, with the executable operations as nine tool servers built on the Model Context Protocol (MCP) and the operating decisions as a Skill. Run over the 238,205 DR19 dwarfs under a fixed driver script, the classifier flags 41,466 SB2 candidates with median mass ratio q = 0.91, about fifteen times the 2,645 identified in DR13, though not at matched purity. The 8.1% control false-positive rate implies that close to 40% are single stars, so we release the sample as a candidate list. Refitting the individual visits confirms 68.5% of the multiply-visited SB2 and adds 519 single-lined velocity variables and 8,981 orbit-ready systems. We compare the eccentricities of the best-sampled binaries and find no significant difference between the close twins (q > 0.95) and matched non-twins, which excludes an eccentricity excess of the kind measured at wide separations. An ablation of two operating decisions illustrates that a fresh agent recovers a removed decision only when its absence leaves a measurable trace in the fit. We release the tools, the Skill, and the DR19 catalog with its multi-epoch supplement.

Figures

Figures reproduced from arXiv: 2608.10866 by the authors.

Figure 1
Figure 1. How an SB2 imprints line doubling, illustrated with a q = 0.90 composite model built the same way the clas￾sifier builds it (a Sun-like primary combined with a cooler secondary through the isochrone tie), shown around one strong, isolated H-band line. A single star gives one ab￾sorption core (grey); as the component velocity separation |v1 −v2| grows, the core splits into a resolved pair at the pri￾mary (blue) and s… view at source ↗
Figure 2
Figure 2. A DR19 dwarf SB2 recovered by the agent (sdss id 116011140, a near-equal-mass pair), at the three H-band windows where the binary model most improves the fit. Top: data with the best single-star (blue) and binary (orange) models. Middle: the χ residuals; the single-star model swings past the ±1σ band at the doubled line cores the binary model captures. Bottom: the two-component decomposition, with the primary and se… view at source ↗
Figure 3
Figure 3. The sliding acceptance criterion. Blue: the EB18 ladder, the minimum fimp required of a star as a function of its fit improvement ∆χ 2 (the largest floor it clears sets the requirement). Orange: the threshold recalibrated for our classifier (rungs scaled by 0.90 in both coordinates), waived above ∆χ 2 = 105 (grey dotted). A star is accepted as SB2 in the shaded region above the recalibrated threshold. the catalog th… view at source ↗
Figures from the paper (12 more)
Figure 4
Figure 4. Figure 4: The agent and its tools, as a processing flow. A Skill-primed language-model agent fits each spectrum with a single-star and a two-component model, reads the detection statistic (∆χ 2 , fimp) against the EB18 acceptance gate, and, for borderline cases, inspects the ren…
Figure 6
Figure 6. Figure 6: The detection statistic on the benchmark. Each point is one star in the plane of the fit improvement ∆χ 2 (sin￾gle minus binary) and the improvement fraction fimp. Con￾trol stars (grey) stay at low values, while the benchmark SB2 (orange) climb into the acceptance regi…
Figure 5
Figure 5. Figure 5: One agent trajectory on a flagged SB2. The agent (blue) calls the tools in order and reads back each compact return (grey), then issues the verdict (orange). The values shown are those the catalog classifier recovers for the system in [PITH_FULL_IMAGE:figures/full_fig…
Figure 7
Figure 7. Figure 7: SB2 recovery versus control false-positive rate on the benchmark (2,344 SB2 and, for the false-positive rate, the 3,590 held-out controls the classifier never trained on). Our open real-data classifier (orange) is shown alongside the EB18 network run as a best-case ref…
Figure 8
Figure 8. Figure 8: Galactic distribution (Aitoff projection, longitude increasing to the left) of the flagged SB2. Grey: the full DR19 dwarf sample with a coordinate match in the DR19 astra ASPCAP summary; blue: the 41,290 flagged SB2 with a match (of 41,466). The flagged binaries trace …
Figure 9
Figure 9. Figure 9: Gaia color–magnitude check of the flagged SB2, in observed (not de-reddened) MG and GBP − GRP. Grey: the full dwarf sample, whose running median is the main￾sequence ridge (black solid). Blue: flagged SB2 above the ridge (77% of those with a reliable parallax), as expe…
Figure 10
Figure 10. Figure 10: Properties of the 41,466 flagged DR19 SB2. (a) recovered mass ratio q, shown for q ≥ 0.2 (median dashed). (b) primary metallicity of the flagged SB2 (blue) against the full DR19 dwarf sample (grey), area-normalized; the raw SB2 fraction versus [Fe/H] is selection-domi…
Figure 11
Figure 11. Figure 11: Density of the 41,466 flagged SB2 in primary temperature and recovered mass ratio (Teff increasing to the left; logarithmic color scale). The single-star model’s 4200 K floor bounds the recovered mass ratio toward cool primaries (dashed). The fifth-percentile q in bin…
Figure 13
Figure 13. Figure 13: Maximum primary radial-velocity change ∆vmax across visits in the multi-epoch analysis, restricted to sys￾tems with three or more epochs, for which ∆vmax is a tracer of orbital motion (two-epoch systems often sample similar orbital phases and are excluded here). The p…
Figure 14
Figure 14. Figure 14: Per-visit component velocities for six example multi-epoch SB2, one per panel. As the primary velocity v1 increases, the secondary velocity v2 decreases: the two stars move in anti-phase about the barycenter, as expected for a bound pair. The slope of v2 against v1 is…
Figure 15
Figure 15. Figure 15: Injection test of the eccentricity-index difference between the close twins and the matched non-twins. Mock populations with a known difference (orange) are recovered along the one-to-one line, and mocks with a zero difference at the real sampling (blue, offset for cl…
Figure 16
Figure 16. Figure 16: The hierarchical model behind the population comparison. Blue circles are model parameters, red are distributions, grey are intermediate variables, and yellow are observed, the per-visit radial velocities and the spectroscopic mass ratio q. The model draws a measureme…

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Reference graph

Works this paper leans on

105 extracted references · 12 canonical work pages

  1. [1]

    , keywords =

    The Eighteenth Data Release of the Sloan Digital Sky Surveys: Targeting and First Spectra from SDSS-V. , keywords =. doi:10.3847/1538-4365/acda98 , archivePrefix =. 2301.07688 , primaryClass =

    arXiv

  2. [2]

    , keywords =

    The Payne: Self-consistent ab initio Fitting of Stellar Spectra. , keywords =. doi:10.3847/1538-4357/ab2331 , archivePrefix =. 1804.01530 , primaryClass =

    arXiv

  3. [3]

    , keywords =

    Discovery and characterization of 3000+ main-sequence binaries from APOGEE spectra. , keywords =. doi:10.1093/mnras/sty240 , archivePrefix =. 1711.08793 , primaryClass =

    arXiv

  4. [4]

    , keywords =

    Signatures of unresolved binaries in stellar spectra: implications for spectral fitting. , keywords =. doi:10.1093/mnras/stx2758 , archivePrefix =. 1709.03983 , primaryClass =

    arXiv

  5. [5]

    , keywords =

    The Gaia-ESO Survey: double-, triple-, and quadruple-line spectroscopic binary candidates. , keywords =. doi:10.1051/0004-6361/201730442 , archivePrefix =. 1707.01720 , primaryClass =

    arXiv

  6. [6]

    , keywords =

    The Apache Point Observatory Galactic Evolution Experiment (APOGEE). , keywords =. doi:10.3847/1538-3881/aa784d , archivePrefix =. 1509.05420 , primaryClass =

    arXiv

  7. [7]

    Mesa Isochrones and Stellar Tracks (MIST). I. Solar-scaled Models. , keywords =. doi:10.3847/0004-637X/823/2/102 , archivePrefix =. 1604.08592 , primaryClass =

    arXiv

  8. [8]

    , keywords =

    The Cannon: A data-driven approach to Stellar Label Determination. , keywords =. doi:10.1088/0004-637X/808/1/16 , archivePrefix =. 1501.07604 , primaryClass =

    arXiv

Show all 105 references
  1. [9]

    Scientific Reports , keywords =

    Achieving GPT-4o level performance in astronomy with a specialized 8B-parameter large language model. Scientific Reports , keywords =. doi:10.1038/s41598-025-97131-y , archivePrefix =. 2411.09012 , primaryClass =

    arXiv

  2. [10]

    arXiv e-prints , keywords =

    What is the Role of Large Language Models in the Evolution of Astronomy Research?. arXiv e-prints , keywords =. doi:10.48550/arXiv.2409.20252 , archivePrefix =. 2409.20252 , primaryClass =

    doi arXiv

  3. [11]

    , keywords =

    Towards an astronomical foundation model for stars with a transformer-based model. , keywords =. doi:10.1093/mnras/stad3015 , archivePrefix =. 2308.10944 , primaryClass =

    arXiv

  4. [12]

    , keywords =

    Double-lined Spectroscopic Binaries in the APOGEE DR16 and DR17 Data. , keywords =. doi:10.3847/1538-3881/ac1798 , archivePrefix =. 2107.10860 , primaryClass =

    arXiv

  5. [13]

    , keywords =

    APOGEE Data and Spectral Analysis from SDSS Data Release 16: Seven Years of Observations Including First Results from APOGEE-South. , keywords =. doi:10.3847/1538-3881/aba592 , archivePrefix =. 2007.05537 , primaryClass =

    2007 arXiv

  6. [14]

    , keywords =

    Binary Companions of Evolved Stars in APOGEE DR14: Search Method and Catalog of 5000 Companions. , keywords =. doi:10.3847/1538-3881/aac387 , archivePrefix =. 1804.04662 , primaryClass =

    arXiv

  7. [15]

    , keywords =

    Mind Your Ps and Qs: The Interrelation between Period (P) and Mass-ratio (Q) Distributions of Binary Stars. , keywords =. doi:10.3847/1538-4365/aa6fb6 , archivePrefix =. 1606.05347 , primaryClass =

    arXiv

  8. [16]

    , keywords =

    Astropy: A community Python package for astronomy. , keywords =. doi:10.1051/0004-6361/201322068 , archivePrefix =. 1307.6212 , primaryClass =

    arXiv

  9. [17]

    , keywords =

    Stellar Multiplicity. , keywords =. doi:10.1146/annurev-astro-081710-102602 , archivePrefix =. 1303.3028 , primaryClass =

    arXiv

  10. [18]

    , keywords =

    A Survey of Stellar Families: Multiplicity of Solar-type Stars. , keywords =. doi:10.1088/0067-0049/190/1/1 , archivePrefix =. 1007.0414 , primaryClass =

    arXiv

  11. [19]

    The Open Journal of Astrophysics , year = 2026, volume =

    Egent: An Autonomous Agent for Equivalent Width Measurement. The Open Journal of Astrophysics , year = 2026, volume =

    2026

  12. [20]

    arXiv e-prints , keywords =

    SDSS-V: Pioneering Panoptic Spectroscopy. arXiv e-prints , keywords =. doi:10.48550/arXiv.1711.03234 , archivePrefix =. 1711.03234 , primaryClass =

    doi arXiv

  13. [21]

    , keywords =

    Autonomous disentangling for spectroscopic surveys. , keywords =. doi:10.1093/mnras/stae982 , archivePrefix =. 2405.19391 , primaryClass =

    arXiv

  14. [22]

    Protostars and Planets VII , year = 2023, editor =

    The Origin and Evolution of Multiple Star Systems. Protostars and Planets VII , year = 2023, editor =. doi:10.48550/arXiv.2203.10066 , archivePrefix =. 2203.10066 , primaryClass =

    2023 doi arXiv

  15. [23]

    Stellar multiplicity, a teaser for the hidden treasure

    Gaia Data Release 3. Stellar multiplicity, a teaser for the hidden treasure. , keywords =. doi:10.1051/0004-6361/202243782 , archivePrefix =. 2206.05595 , primaryClass =

    arXiv

  16. [24]

    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 =

    arXiv

  17. [25]

    , keywords =

    Close Binary Companions to APOGEE DR16 Stars: 20,000 Binary-star Systems Across the Color-Magnitude Diagram. , keywords =. doi:10.3847/1538-4357/ab8acc , archivePrefix =. 2002.00014 , primaryClass =

    2002 arXiv

  18. [26]

    , keywords =

    The Apache Point Observatory Galactic Evolution Experiment (APOGEE) Spectrographs. , keywords =. doi:10.1088/1538-3873/ab0075 , archivePrefix =. 1902.00928 , primaryClass =

    1902 arXiv

  19. [27]

    , keywords =

    Stellar Multiplicity Meets Stellar Evolution and Metallicity: The APOGEE View. , keywords =. doi:10.3847/1538-4357/aaa765 , archivePrefix =. 1711.00660 , primaryClass =

    arXiv

  20. [28]

    , keywords =

    Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe. , keywords =. doi:10.3847/1538-3881/aa7567 , archivePrefix =. 1703.00052 , primaryClass =

    arXiv

  21. [29]

    , keywords =

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

    arXiv

  22. [30]

    , keywords =

    The Galaxy in Context: Structural, Kinematic, and Integrated Properties. , keywords =. doi:10.1146/annurev-astro-081915-023441 , archivePrefix =. 1602.07702 , primaryClass =

    arXiv

  23. [31]

    , keywords =

    ASPCAP: The APOGEE Stellar Parameter and Chemical Abundances Pipeline. , keywords =. doi:10.3847/0004-6256/151/6/144 , archivePrefix =. 1510.07635 , primaryClass =

    arXiv

  24. [32]

    , keywords =

    The Data Reduction Pipeline for the Apache Point Observatory Galactic Evolution Experiment. , keywords =. doi:10.1088/0004-6256/150/6/173 , archivePrefix =. 1501.03742 , primaryClass =

    arXiv

  25. [33]

    , keywords =

    The 2.5 m Telescope of the Sloan Digital Sky Survey. , keywords =. doi:10.1086/500975 , archivePrefix =. astro-ph/0602326 , primaryClass =

    arXiv

  26. [34]

    The Messenger , year = 2012, month = mar, volume =

    The Gaia-ESO Public Spectroscopic Survey. The Messenger , year = 2012, month = mar, volume =

    2012

  27. [35]

    , keywords =

    The Gaia-ESO Public Spectroscopic Survey: Implementation, data products, open cluster survey, science, and legacy. , keywords =. doi:10.1051/0004-6361/202243141 , archivePrefix =. 2206.02901 , primaryClass =

    arXiv

  28. [36]

    The Messenger , keywords =

    Installation and commissioning of FLAMES, the VLT Multifibre Facility. The Messenger , keywords =

  29. [37]

    , keywords =

    Discovery of an equal-mass `twin' binary population reaching 1000 + au separations. , keywords =. doi:10.1093/mnras/stz2480 , archivePrefix =. 1906.10128 , primaryClass =

    1906 arXiv

  30. [38]

    arXiv e-prints , keywords =

    The AI Scientist: Towards Fully Automated Open-Ended Scientific Discovery. arXiv e-prints , keywords =. doi:10.48550/arXiv.2408.06292 , archivePrefix =. 2408.06292 , primaryClass =

    doi arXiv

  31. [39]

    , keywords =

    The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation. , keywords =. doi:10.1093/mnras/stad557 , archivePrefix =. 2212.03981 , primaryClass =

    arXiv

  32. [40]

    , year = 2023, month = dec, volume =

    Autonomous chemical research with large language models. , year = 2023, month = dec, volume =. doi:10.1038/s41586-023-06792-0 , adsurl =

    2023 doi

  33. [41]

    arXiv e-prints , keywords =

    AutoGen: Enabling Next-Gen LLM Applications via Multi-Agent Conversation. arXiv e-prints , keywords =. doi:10.48550/arXiv.2308.08155 , archivePrefix =. 2308.08155 , primaryClass =

    doi arXiv

  34. [42]

    Analysis of RVS spectra using the General Stellar Parametriser from spectroscopy

    Gaia Data Release 3. Analysis of RVS spectra using the General Stellar Parametriser from spectroscopy. , keywords =. doi:10.1051/0004-6361/202243750 , archivePrefix =. 2206.05541 , primaryClass =

    arXiv

  35. [43]

    arXiv e-prints , keywords =

    ChemCrow: Augmenting large-language models with chemistry tools. arXiv e-prints , keywords =. doi:10.48550/arXiv.2304.05376 , archivePrefix =. 2304.05376 , primaryClass =

    doi arXiv

  36. [44]

    arXiv e-prints , keywords =

    GPT-4 Technical Report. arXiv e-prints , keywords =. doi:10.48550/arXiv.2303.08774 , archivePrefix =. 2303.08774 , primaryClass =

    doi arXiv

  37. [45]

    arXiv e-prints , keywords =

    Toolformer: Language Models Can Teach Themselves to Use Tools. arXiv e-prints , keywords =. doi:10.48550/arXiv.2302.04761 , archivePrefix =. 2302.04761 , primaryClass =

    doi arXiv

  38. [46]

    arXiv e-prints , keywords =

    ReAct: Synergizing Reasoning and Acting in Language Models. arXiv e-prints , keywords =. doi:10.48550/arXiv.2210.03629 , archivePrefix =. 2210.03629 , primaryClass =

    doi arXiv

  39. [47]

    Predicted astrometric signals

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

    arXiv

  40. [48]

    , keywords =

    Stellar multiplicity and stellar rotation: insights from APOGEE. , keywords =. doi:10.1093/mnras/stac590 , archivePrefix =. 2110.01100 , primaryClass =

    arXiv

  41. [49]

    arXiv e-prints , keywords =

    Chain-of-Thought Prompting Elicits Reasoning in Large Language Models. arXiv e-prints , keywords =. doi:10.48550/arXiv.2201.11903 , archivePrefix =. 2201.11903 , primaryClass =

    doi arXiv

  42. [50]

    , keywords =

    A million binaries from Gaia eDR3: sample selection and validation of Gaia parallax uncertainties. , keywords =. doi:10.1093/mnras/stab323 , archivePrefix =. 2101.05282 , primaryClass =

    arXiv

  43. [51]

    The astrometric solution

    Gaia Early Data Release 3. The astrometric solution. , keywords =. doi:10.1051/0004-6361/202039709 , archivePrefix =. 2012.03380 , primaryClass =

    2012 arXiv

  44. [52]

    , keywords =

    The close binary fraction as a function of stellar parameters in APOGEE: a strong anticorrelation with abundances. , keywords =. doi:10.1093/mnras/staa2859 , archivePrefix =. 2007.09059 , primaryClass =

    2007 arXiv

  45. [53]

    , keywords =

    Unresolved stellar companions with Gaia DR2 astrometry. , keywords =. doi:10.1093/mnras/staa1522 , archivePrefix =. 2003.05467 , primaryClass =

    2003 arXiv

  46. [54]

    , keywords =

    Abundance Estimates for 16 Elements in 6 Million Stars from LAMOST DR5 Low-Resolution Spectra. , keywords =. doi:10.3847/1538-4365/ab5364 , archivePrefix =. 1908.09727 , primaryClass =

    1908 arXiv

  47. [55]

    The Messenger , keywords =

    4MOST: Project overview and information for the First Call for Proposals. The Messenger , keywords =. doi:10.18727/0722-6691/5117 , archivePrefix =. 1903.02464 , primaryClass =

    1903 arXiv

  48. [56]

    , keywords =

    Deep learning of multi-element abundances from high-resolution spectroscopic data. , keywords =. doi:10.1093/mnras/sty3217 , archivePrefix =. 1808.04428 , primaryClass =

    arXiv

  49. [57]

    , keywords =

    Imprints of white dwarf recoil in the separation distribution of Gaia wide binaries. , keywords =. doi:10.1093/mnras/sty2186 , archivePrefix =. 1807.06011 , primaryClass =

    arXiv

  50. [58]

    Catalogue validation

    Gaia Data Release 2. Catalogue validation. , keywords =. doi:10.1051/0004-6361/201833234 , archivePrefix =. 1804.09375 , primaryClass =

    arXiv

  51. [59]

    , keywords =

    An application of deep learning in the analysis of stellar spectra. , keywords =. doi:10.1093/mnras/stx3298 , archivePrefix =. 1709.09182 , primaryClass =

    arXiv

  52. [60]

    , keywords =

    The Updated Multiple Star Catalog. , keywords =. doi:10.3847/1538-4365/aaa1a5 , archivePrefix =. 1712.04750 , primaryClass =

    arXiv

  53. [61]

    , keywords =

    The Joker: A Custom Monte Carlo Sampler for Binary-star and Exoplanet Radial Velocity Data. , keywords =. doi:10.3847/1538-4357/aa5e50 , archivePrefix =. 1610.07602 , primaryClass =

    arXiv

  54. [62]

    arXiv e-prints , keywords =

    The Cannon 2: A data-driven model of stellar spectra for detailed chemical abundance analyses. arXiv e-prints , keywords =. doi:10.48550/arXiv.1603.03040 , archivePrefix =. 1603.03040 , primaryClass =

    doi arXiv

  55. [63]

    , keywords =

    MESA Isochrones and Stellar Tracks (MIST) 0: Methods for the Construction of Stellar Isochrones. , keywords =. doi:10.3847/0067-0049/222/1/8 , archivePrefix =. 1601.05144 , primaryClass =

    arXiv

  56. [64]

    Research in Astronomy and Astrophysics , year = 2012, month = sep, volume =

    The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST). Research in Astronomy and Astrophysics , year = 2012, month = sep, volume =. doi:10.1088/1674-4527/12/9/003 , adsurl =

    2012 doi

  57. [65]

    Science , keywords =

    Binary Interaction Dominates the Evolution of Massive Stars. Science , keywords =. doi:10.1126/science.1223344 , archivePrefix =. 1207.6397 , primaryClass =

    arXiv

  58. [66]

    Mapping the Shores of the Brown Dwarf Desert. II. Multiple Star Formation in Taurus-Auriga. , keywords =. doi:10.1088/0004-637X/731/1/8 , archivePrefix =. 1101.4016 , primaryClass =

    arXiv

  59. [67]

    , keywords =

    Modules for Experiments in Stellar Astrophysics (MESA). , keywords =. doi:10.1088/0067-0049/192/1/3 , archivePrefix =. 1009.1622 , primaryClass =

    arXiv

  60. [68]

    A grid of MARCS model atmospheres for late-type stars. I. Methods and general properties. , keywords =. doi:10.1051/0004-6361:200809724 , archivePrefix =. 0805.0554 , primaryClass =

    arXiv

  61. [69]

    , keywords =

    A New Look at the Binary Characteristics of Massive Stars. , keywords =. doi:10.1086/522073 , adsurl =

    doi

  62. [70]

    , keywords =

    Chemical Homogeneity in Collinder 261 and Implications for Chemical Tagging. , keywords =. doi:10.1086/511182 , archivePrefix =. astro-ph/0611832 , primaryClass =

    arXiv

  63. [71]

    , keywords =

    The Radial Velocity Experiment (RAVE): First Data Release. , keywords =. doi:10.1086/506564 , archivePrefix =. astro-ph/0606211 , primaryClass =

    arXiv

  64. [72]

    , keywords =

    S _ B ^ 9 : The ninth catalogue of spectroscopic binary orbits. , keywords =. doi:10.1051/0004-6361:20041213 , archivePrefix =. astro-ph/0406573 , primaryClass =

    arXiv

  65. [73]

    Modelling of Stellar Atmospheres , year = 2003, editor =

    New Grids of ATLAS9 Model Atmospheres. Modelling of Stellar Atmospheres , year = 2003, editor =. doi:10.48550/arXiv.astro-ph/0405087 , archivePrefix =. astro-ph/0405087 , primaryClass =

    2003 doi arXiv

  66. [74]

    , keywords =

    The New Galaxy: Signatures of Its Formation. , keywords =. doi:10.1146/annurev.astro.40.060401.093840 , archivePrefix =. astro-ph/0208106 , primaryClass =

  67. [75]

    Study of Spectroscopic Binaries with TODCOR. I. A New Two-dimensional Correlation Algorithm to Derive the Radial Velocities of the Two Components. , keywords =. doi:10.1086/173605 , adsurl =

    doi

  68. [76]

    , keywords =

    Gaia's binary star renaissance. , keywords =. doi:10.1016/j.newar.2024.101694 , archivePrefix =. 2403.12146 , primaryClass =

    2024

  69. [77]

    Astrometric binary star processing

    Gaia Data Release 3. Astrometric binary star processing. , keywords =. doi:10.1051/0004-6361/202243969 , archivePrefix =. 2206.05726 , primaryClass =

    arXiv

  70. [78]

    A sample of binaries with probable compact companions

    Triage of the Gaia DR3 astrometric orbits - I. A sample of binaries with probable compact companions. , keywords =. doi:10.1093/mnras/stac3290 , archivePrefix =. 2209.00828 , primaryClass =

    arXiv

  71. [79]

    , keywords =

    The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package. , keywords =. doi:10.3847/1538-4357/ac7c74 , archivePrefix =. 2206.14220 , primaryClass =

    arXiv

  72. [80]

    arXiv e-prints , keywords =

    Training language models to follow instructions with human feedback. arXiv e-prints , keywords =. doi:10.48550/arXiv.2203.02155 , archivePrefix =. 2203.02155 , primaryClass =

    doi arXiv

  73. [81]

    arXiv e-prints , keywords =

    WebGPT: Browser-assisted question-answering with human feedback. arXiv e-prints , keywords =. doi:10.48550/arXiv.2112.09332 , archivePrefix =. 2112.09332 , primaryClass =

    doi arXiv

  74. [82]

    arXiv e-prints , keywords =

    On the Opportunities and Risks of Foundation Models. arXiv e-prints , keywords =. doi:10.48550/arXiv.2108.07258 , archivePrefix =. 2108.07258 , primaryClass =

    doi arXiv

  75. [83]

    , keywords =

    Array programming with NumPy. , keywords =. doi:10.1038/s41586-020-2649-2 , archivePrefix =. 2006.10256 , primaryClass =

    2006 arXiv

  76. [84]

    , keywords =

    The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra. , keywords =. doi:10.3847/1538-4365/ab929e , archivePrefix =. 1912.02905 , primaryClass =

    1912

  77. [85]

    arXiv e-prints , keywords =

    Language Models are Few-Shot Learners. arXiv e-prints , keywords =. doi:10.48550/arXiv.2005.14165 , archivePrefix =. 2005.14165 , primaryClass =

    2005 doi arXiv

  78. [86]

    , keywords =

    DYNESTY: a dynamic nested sampling package for estimating Bayesian posteriors and evidences. , keywords =. doi:10.1093/mnras/staa278 , archivePrefix =. 1904.02180 , primaryClass =

    1904 arXiv

  79. [87]

    Nature Medicine , keywords =

    SciPy 1.0: fundamental algorithms for scientific computing in Python. Nature Medicine , keywords =. doi:10.1038/s41592-019-0686-2 , archivePrefix =. 1907.10121 , primaryClass =

    1907 arXiv

  80. [88]

    , keywords =

    Formation of close binaries by disc fragmentation and migration, and its statistical modelling. , keywords =. doi:10.1093/mnras/stz3299 , archivePrefix =. 1910.01522 , primaryClass =

    1910 arXiv

  81. [89]

    arXiv e-prints , keywords =

    PyTorch: An Imperative Style, High-Performance Deep Learning Library. arXiv e-prints , keywords =. doi:10.48550/arXiv.1912.01703 , archivePrefix =. 1912.01703 , primaryClass =

    1912 doi arXiv

  82. [90]

    Binarity from proper motion anomaly

    Stellar and substellar companions of nearby stars from Gaia DR2. Binarity from proper motion anomaly. , keywords =. doi:10.1051/0004-6361/201834371 , archivePrefix =. 1811.08902 , primaryClass =

    arXiv

  83. [91]

    , keywords =

    Rapid Rotation in the Kepler Field: Not a Single Star Phenomenon. , keywords =. doi:10.3847/1538-4357/aaf97c , archivePrefix =. 1809.02141 , primaryClass =

    arXiv

  84. [92]

    , keywords =

    The Astropy Project: Building an Open-science Project and Status of the v2.0 Core Package. , keywords =. doi:10.3847/1538-3881/aabc4f , archivePrefix =. 1801.02634 , primaryClass =

    arXiv

  85. [93]

    arXiv e-prints , keywords =

    Attention Is All You Need. arXiv e-prints , keywords =. doi:10.48550/arXiv.1706.03762 , archivePrefix =. 1706.03762 , primaryClass =

    doi arXiv

  86. [94]

    , keywords =

    Gaia FGK benchmark stars: Effective temperatures and surface gravities. , keywords =. doi:10.1051/0004-6361/201526319 , archivePrefix =. 1506.06095 , primaryClass =

    arXiv

  87. [95]

    , keywords =

    Determining stellar atmospheric parameters and chemical abundances of FGK stars with iSpec. , keywords =. doi:10.1051/0004-6361/201423945 , archivePrefix =. 1407.2608 , primaryClass =

    arXiv

  88. [96]

    , keywords =

    emcee: The MCMC Hammer. , keywords =. doi:10.1086/670067 , archivePrefix =. 1202.3665 , primaryClass =

    arXiv

  89. [97]

    Standard stars with 1D and <3D> model atmospheres

    Non-LTE line formation of Fe in late-type stars - I. Standard stars with 1D and <3D> model atmospheres. , keywords =. doi:10.1111/j.1365-2966.2012.21687.x , archivePrefix =. 1207.2455 , primaryClass =

    2012

  90. [98]

    Journal of Machine Learning Research , keywords =

    Scikit-learn: Machine Learning in Python. Journal of Machine Learning Research , keywords =. doi:10.48550/arXiv.1201.0490 , archivePrefix =. 1201.0490 , primaryClass =

    doi arXiv

  91. [99]

    Computing in Science and Engineering , keywords =

    Matplotlib: A 2D Graphics Environment. Computing in Science and Engineering , keywords =. doi:10.1109/MCSE.2007.55 , adsurl =

    2007 doi

  92. [100]

    , keywords =

    Automated derivation of stellar atmospheric parameters and chemical abundances: the MATISSE algorithm. , keywords =. doi:10.1111/j.1365-2966.2006.10455.x , archivePrefix =. astro-ph/0604385 , primaryClass =

    2006

  93. [101]

    , keywords =

    A Spectroscopic Study of the Ancient Milky Way: F- and G-Type Stars in the Third Data Release of the Sloan Digital Sky Survey. , keywords =. doi:10.1086/498131 , archivePrefix =. astro-ph/0509812 , primaryClass =

    arXiv

  94. [102]

    , keywords =

    Inverse dynamical population synthesis and star formation. , keywords =. doi:10.1093/mnras/277.4.1491 , archivePrefix =. astro-ph/9508117 , primaryClass =

    arXiv

  95. [103]

    , year = 2022, month = jul, volume =

    Wide Twin Binaries Are Extremely Eccentric: Evidence of Twin Binary Formation in Circumbinary Disks. , year = 2022, month = jul, volume =

    2022

  96. [104]

    , year = 2022, month = may, volume =

    The eccentricity distribution of wide binaries and their individual measurements. , year = 2022, month = may, volume =

    2022

  97. [105]

    , year = 2005, month = feb, volume =

    A Robust Measure of Tidal Circularization in Coeval Binary Populations: The Solar-Type Spectroscopic Binary Population in the Open Cluster M35. , year = 2005, month = feb, volume =

    2005

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