论文标题
基于Lamost DR9的AP星目录
An Ap star catalog based on LAMOST DR9
论文作者
论文摘要
我们在Lamost DR9中提供了2700颗AP星的样品。首先，通过使用Gaia DR3的$ BP $ -RP $颜色指数，首先选择候选人在AP星的典型温度范围内。然后在Lamost DR9光谱中视觉检查AP恒星的5200 \ Flux抑郁症的特征。详细的光谱特征是通过应用修改的光谱分类程序MKClass给出的。这些AP恒星的恒星参数，例如$ t _ {\ rm eff} $，$ \ log g $，[fe/h]，[si/h]和$ v {\ sin} i $是从热星目录中提取的，或者是通过经验关系得出的，然后进行了统计分析。还讨论了进化阶段。最后，我们讨论具有苔丝或开普勒曲线的人的旋转和脉动特征。在这些AP恒星中，我们发现了7个新的旋转变量，1个新的ROAP恒星和一个以前已知的ROAP星的新$δ$ Scuti脉动。
We present a sample of 2700 Ap stars in LAMOST DR9. 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 characteristic of Ap stars are visually checked in LAMOST DR9 spectra. The detailed spectral features are given by applying a modified spectral classification program, MKCLASS. Stellar parameters of these Ap stars such as $T_{\rm eff}$, $\log g$, [Fe/H], [Si/H], and $v{\sin}i$ are either extracted from a hot star catalog or derived through empirical relations and then a statistical analysis is carried out. The evolutionary stages are also discussed. Finally, we discuss the rotation and pulsation features of those who have TESS or Kepler light curves. Among these Ap stars we find 7 new rotation variables, 1 new roAp star, and new $δ$ Scuti pulsation of a previously known roAp star.
