An Ap Star Catalog Based on LAMOST DR9

• Published in: The Astrophysical journal Vol. 943; no. 2; pp. 147 - 158
• Main Authors: Shi, Fangfei, Zhang, Huawei, Fu, Jianning, Kurtz, Donald, Xiang, Maosheng
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 01.02.2023; IOP Publishing
• Subjects: Ap stars; Astronomical catalogs; Astronomy data analysis; Astrophysics; Chemical abundances; Chemically peculiar stars; Empirical analysis; Hot stars; Light curve; Parameter modification; Peculiar stars; Pulsation; Rotation; Spectral classification; Spectroscopic telescopes; Stars; Stars & galaxies; Statistical analysis; Variable stars
• ISSN: 0004-637X; 1538-4357
• DOI: 10.3847/1538-4357/aca89e

We present a sample of 2700 Ap stars in the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR9 catalog. The candidates are first selected to be in a temperature range typical of Ap stars by using the BP − RP color index from Gaia DR3. Then the 5200 Å flux depression features char...