Astrophysical parameters associated to 'hot' stars in Gaia DR3

Yves Frémat

Astrophysical parameters associated to 'hot' stars in Gaia DR3

Solar and Stellar Astrophysics 2024-11-08 v1 Astrophysics of Galaxies

Authors: Yves Frémat

Abstract

Hot stars, of spectral types O-, B-, and A-, represent a small fraction of the stars observed by the Gaia satellite. Their properties and the specifications of the on-board instruments make their identification challenging. In the Gaia DR3, 12, 104,577 targets have been assigned a temperature greater than 7500 K. It represents about 2.5 percent of the stars having an effective temperature value in the Gaia DR3 astrophysical parameters table. We review the results obtained by the Apsis modules, focusing on the effective temperature, surface gravity, interstellar extinction, and V sin i parameters.

Keywords

Gaia DR3 hot stars astrophysical parameters effective temperature surface gravity interstellar extinction Apsis

Cite

@article{arxiv.2411.04887,
  title  = {Astrophysical parameters associated to 'hot' stars in Gaia DR3},
  author = {Yves Frémat},
  journal= {arXiv preprint arXiv:2411.04887},
  year   = {2024}
}

Comments

Ecole Evry Schatzman 2023: Stellar physics with Gaia, https://ees2023.sciencesconf.org/?lang=en

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