SPECTROSCOPIC STUDY OF THE CHEMICALLY PECULIAR STAR-HD-5797

Citation
Ik. Iliev et Is. Barzova, SPECTROSCOPIC STUDY OF THE CHEMICALLY PECULIAR STAR-HD-5797, Astrophysics and space science, 206(2), 1993, pp. 249-257
Citations number
14
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
0004640X
Volume
206
Issue
2
Year of publication
1993
Pages
249 - 257
Database
ISI
SICI code
0004-640X(1993)206:2<249:SSOTCP>2.0.ZU;2-5
Abstract
Based on 19 spectrograms with a dispersion of 17.5 angstrom/mm, line s pectrum variations in the CP2 star HD 5797 are studied. Equivalent wid th and central depth measurements show that intensities of 34 unblende d lines vary with an amplitude of about 2 times for Fe, Ti and Sr line s, and 2.5 times for Cr lines. A search for improved period of the sta r has been carried out. The obtained new value is: P = 68.255 +/- 0.00 4 days. An attempt to give a qualitative explanation of the photometri c behaviour is made.