Yayınlanmış 1 Ocak 2018 | Sürüm v1

High-resolution abundance analysis of the metallic-line star HR 7250

  • 1. Ankara Univ, Dept Astron & Space Sci, TR-06100 Ankara, Turkey

Açıklama

We estimated the stellar parameters and chemical abundances of the highly neglected A-type star HR 7250. The star's high resolution spectrum, spanning a wavelength range from 3900 to 7900 angstrom, was obtained at the TUIBITAK National Observatory. We derived the abundances of 14 elements (O, Na, Mg, Si, S, Ca, Sc, Ti, Cr, Fe, Ni, Sr, Y, and Ba) for HR 7250 from the unblended lines of the star's spectrum. Our analysis shows that HR 7250 is a chemically peculiar Am star. We also estimated its age and mass as 400 +/- 70 Myr and 3.25 +/- 0.17 M-circle dot from evolutionary tracks and isochrones.

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bib-173809e3-a63e-40db-9134-86b46c0682e2.txt

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