ELEMENTAL ABUNDANCE ANALYSES WITH DAO SPECTROGRAMS - XIX - THE SUPERFICIALLY NORMAL B-STARS ZETA-DRACONIS, ETA-LYRAE, 8-CYGNI AND 22-CYGNI

Authors
ADELMAN SJ
Citation
Sj. Adelman, ELEMENTAL ABUNDANCE ANALYSES WITH DAO SPECTROGRAMS - XIX - THE SUPERFICIALLY NORMAL B-STARS ZETA-DRACONIS, ETA-LYRAE, 8-CYGNI AND 22-CYGNI, Monthly Notices of the Royal Astronomical Society, 296(4), 1998, pp. 856-862
Citations number
48
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Monthly Notices of the Royal Astronomical Society → ACNP
ISSN journal
00358711
Volume
296
Issue
4
Year of publication
1998
Pages
856 - 862
Database
ISI
SICI code
0035-8711(1998)296:4<856:EAAWDS>2.0.ZU;2-S
Abstract
Elemental abundances of the superficially normal early and middle B st ars zeta Dra, eta Lyr, 8 Cyg and 22 Cyg are derived, consistent with p revious studies in this series, using spectrograms obtained with Retic on and CCD detectors. Almost all of the derived metal abundances are f ound to be solar within the errors of the analysis. However, the He/H ratios are slightly greater than solar.