ABUNDANCE OF CARBON, NITROGEN, OXYGEN, AN D OTHER ELEMENTS IN THE ATMOSPHERES OF PULSATING DELTA-SCUTI STARS - 20 CVN

Authors
RACHKOVSKAYA TM
Citation
Tm. Rachkovskaya, ABUNDANCE OF CARBON, NITROGEN, OXYGEN, AN D OTHER ELEMENTS IN THE ATMOSPHERES OF PULSATING DELTA-SCUTI STARS - 20 CVN, ASTRONOM ZH, 71(4), 1994, pp. 638-644
Citations number
17
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ASTRONOMICESKIJ ZURNAL
ISSN journal
00046299 → ACNP
Volume
71
Issue
4
Year of publication
1994
Pages
638 - 644
Database
ISI
SICI code
0004-6299(1994)71:4<638:AOCNOA>2.0.ZU;2-F
Abstract
High-resolution (0.15 angstrom) CCD spectra of pulsating delta Sct typ e star 20 CVn were studied in spectral regions centered on CI 5052, Cr II 5306, OI 6156, OI 7773, NI 8683 lines. Abundances of carbon (lgepsi lon (C) = 8.40), nitrogen (lgepsilon (N) = 7.96), and oxygen (lgepsilo n (O) = 8.90) in the atmosphere of 20 CVn are close to solar. We disco vered overabundance of sodium, silicon, sulphur, calcium, scandium, ti tanium, chrome, iron, barium, praseodymium and neodymium.