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Spectroscopy Of A Chemically Peculair Delta Scuti-type Star: 60 Tau
2020
Journal:  
Cumhuriyet Science Journal
Author:  
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.

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Cumhuriyet Science Journal

Field :   Fen Bilimleri ve Matematik; Mühendislik

Journal Type :   Uluslararası

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