Estimated magnitudes & distances of LAMOST DR10 stars Virtual Observatory Resource

Authors
  1. Yang C.
  2. Xue X.-X.
  3. Liu C.
  4. Tian H.
  5. Zhu L.
  6. Zhang L.
  7. Published by
    CDS
Abstract

Using the distance estimation method outlined in J. L. Carlin et al., a Bayesian approach specifically tailored for LAMOST data, we estimated distances for 7,450,303 spectra from 5,394,174 unique stars in the LAMOST DR10 low-resolution data set. To accommodate the significant increase in data volume and quality in LAMOST DR10, several improvements were applied to the method in J. L. Carlin et al.: utilizing denser isochrones, increasing the density of interpolated isochrone grids, and incorporating Gaia G-band magnitudes alongside Two Micron All Sky Survey K-band magnitudes for more comprehensive distance estimates. A comparison with Gaia parallaxes shows good consistency across the data. For parallaxes below 1mas, the estimated distances are underestimated by 4% for the K band and 10% for the G band, while for parallaxes below 0.25mas, the distances are overestimated by 9% for the K band and 7% for the G band. Distance uncertainties initially increase with distance, with relative distance uncertainties starting at 5% at 1kpc and rising to 17% at 20kpc, then decreasing to 10%-15% for distances greater than 50kpc. The number of stars with distances between 5 and 10kpc is ~1.8x10^5^, and ~6x10^4^ for distances greater than 10kpc.

Keywords
  1. stellar-distance
  2. photometry
  3. visible-astronomy
  4. infrared-astronomy
  5. spectroscopy
  6. surveys
Bibliographic source Bibcode
2025AJ....169..266Y
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/169/266
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/169/266

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http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/169/266/obs?

History

2026-02-18T14:31:38Z
Resource record created
2026-02-18T14:27:44Z
Updated
2026-02-18T14:31:38Z
Created

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CDS support team
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CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
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