Spectroscopy of a chemically peculair delta scuti-type star: 60 tau

Filiz Kahraman Aliçavuş

doi:10.17776/csj.669561

Research Article

Spectroscopy of a chemically peculair delta scuti-type star: 60 tau

Year 2020, , 433 - 442, 25.06.2020

Filiz Kahraman Aliçavuş

https://doi.org/10.17776/csj.669561

Abstract

In this study, a detailed spectroscopic analysis of 60 Tau is presented. 60 Tau is a Delta Scuti-type pulsating variable and it is also a metallic-lined (Am) star. The pulsation mechanism of Delta Scuti stars have been thought to be well understood and it was also suggested that metallic-lined stars did not exhibit pulsations. However, in recent studies, particularly with Kepler and TESS observations, many metallic-lined Delta Scuti stars have been found. Additionally, it turned out that the current pulsation mechanism of Delta Scuti stars including metallic-lined ones has not fully understood. Therefore, to make a reliable investigation for the driving mechanism of Delta Scuti variables, we need to know precise fundamental stellar (mass, radius) and atmospheric (Teff, log g, microturbulence) parameters of these variables. Hence in this study, the atmospheric parameters, projected rotational velocity and the chemical abundances of 60 Tau were obtained by using the high-resolution and high signal-to-noise spectra. The position of the star is found in the H-R diagram and the Delta Scuti instability strip using Gaia luminosity.

Keywords

Stars, chemically peculiar, spectroscopy, atmospheric parameters

Supporting Institution

the Polish National Center for Science (NCN)

Project Number

2015/18/A/ST9/00578

Thanks

I thank the Polish National Center for Science (NCN) for supporting the study through grant 2015/18/A/ST9/00578

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