SIMBAD references

2018MNRAS.480.2953G - Mon. Not. R. Astron. Soc., 480, 2953-2962 (2018/November-1)

New catalogue of chemically peculiar stars, and statistical analysis.

GHAZARYAN S., ALECIAN G. and HAKOBYAN A.A.

Abstract (from CDS):

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.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: statistical - techniques: spectroscopic - catalogues - stars: abundances - stars: chemically peculiar - stars: individual: (HgMn, ApBp and AmFm)

VizieR on-line data: <Available at CDS (J/MNRAS/480/2953): cpstars.dat refs.dat>

Simbad objects: 416

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2021.05.13-19:00:33

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