MK-like spectral classification for hot subdwarf stars with LAMOST spectra

Xuan Zou; Zhenxin Lei

MK-like spectral classification for hot subdwarf stars with LAMOST spectra

Solar and Stellar Astrophysics 2024-07-25 v1

Authors: Xuan Zou , Zhenxin Lei

Abstract

An MK-like spectral classification has been conducted for 1224 hot subdwarf stars with LAMOST DR9 low-resolution spectra. The whole sample was divided into four categories according to the spectral line characteristics: He-normal, He-weak, He-strong C and He-strong. Each selected spectrum was assigned a spectral class, a luminosity class and an helium class by comparing the line depth and width with standard spectra selected in LAMOST. Relationships between atmospheric parameters and spectral classification were also presented.

Keywords

hot subdwarf stars spectral classification LAMOST MK system spectral lines

Cite

@article{arxiv.2407.17062,
  title  = {MK-like spectral classification for hot subdwarf stars with LAMOST spectra},
  author = {Xuan Zou and Zhenxin Lei},
  journal= {arXiv preprint arXiv:2407.17062},
  year   = {2024}
}

Comments

12 pages,10 figures, 2 tables, accepted for publication in PASJ

Related papers

View all related →