New catalogue of chemically peculiar stars, and statistical analysis - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2018

New catalogue of chemically peculiar stars, and statistical analysis

Résumé

In this paper, we present a new catalogue of chemically peculiar (CP) stars obtained by compiling publications in which abundances of metals are provided. Our catalogue includes 428 stars for which the data were obtained through spectroscopic observations. Most of them (416) are AmFm, HgMn, and ApBp stars. We have used this compilation to proceed to a statistical overview of the abundance anomalies versus the physical parameters of the stars. Spearman’s rank correlation test has been applied, and a significant number of correlations of abundance peculiarities with respect to effective temperature, surface gravity, and rotation velocity have been found. Four interesting cases are discussed in details: the Mn peculiarities in HgMn stars, the Ca correlation with respect to effective temperature in AmFm stars, the case of helium and iron in ApBp stars. Furthermore, we checked for ApBp stars using Anderson–Darling test whether the belonging to a multiple system is a determinant parameter or not for abundance peculiarities.
Fichier principal
Vignette du fichier
sty1912.pdf (599.34 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-02294603 , version 1 (25-05-2023)

Identifiants

Citer

S Ghazaryan, G. Alecian, A Hakobyan. New catalogue of chemically peculiar stars, and statistical analysis. Monthly Notices of the Royal Astronomical Society, 2018, 480 (3), pp.2953-2962. ⟨10.1093/mnras/sty1912⟩. ⟨hal-02294603⟩
35 Consultations
10 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More