SIMBAD references

2019MNRAS.487.5922G - Mon. Not. R. Astron. Soc., 487, 5922-5931 (2019/August-3)

Statistical analysis of roAp, He-weak, and He-rich stars.

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

Abstract (from CDS):

To enlarge our data base of chemically peculiar stars, we compiled published data concerning the He-weak and He-rich stars observed by high-resolution spectroscopy techniques during last decades. Twenty He-weak and 28 He-rich stars have been added to the data base. We have also distinguished roAp stars from stars previously identified as Ap stars. To deepen our knowledge on statistical overview of the abundance anomalies versus the physical parameters of stars, we compared our data with previous compilations. We applied statistical tests on our data and found interesting correlations for effective temperature and surface gravity for all type of stars and a few correlations for projected rotation velocity only for He-rich stars. Because of the lack of the data, we could not check whether being a member of binary system is affecting on chemical peculiarities of those stars.

Abstract Copyright: © 2019 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: (roAp, He-weak and He-rich)

VizieR on-line data: <Available at CDS (J/MNRAS/487/5922): cpstars.dat refs.dat>

Simbad objects: 91

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2021.06.21-18:46:33

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