Open AccessElemental abundance analyses with DAO spectrograms – XIX. The superficially normal B starsζ Draconis, ε Lyrae, 8 Cygni and 22 Cygni
Author(s) -
Adelman Saul J.
Publication year - 1998
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1998.01426.x
Subject(s) - physics , astrophysics , rr lyrae variable , stars , astronomy , spectrogram , abundance (ecology) , globular cluster , fishery , computer science , computer vision , biology
Elemental abundances of the superficially normal early and middle B starsζ Dra, ε Lyr, 8 Cyg and 22 Cyg are derived, consistent with previous studies in this series, using spectrograms obtained with Reticon and CCD detectors. Almost all of the derived metal abundances are found to be solar within the errors of the analysis. However, the He/H ratios are slightly greater than solar.