Elemental abundance analyses with DAO spectrograms: XXXI. The early F supergiants v Her (F2 II) and 41 Cyg (F5 Ib-II)
Astronomische Nachrichten, cilt.329, sa.1, ss.4-9, 2008 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 329 Sayı: 1
- Basım Tarihi: 2008
- Doi Numarası: 10.1002/asna.200710863
- Dergi Adı: Astronomische Nachrichten
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.4-9
- Anahtar Kelimeler: Stars: Abundances, Stars: Individual: (v Her, 41 Cyg), Supergiants
- İstanbul Kültür Üniversitesi Adresli: Evet
Özet
This series of high quality elemental abundance analyses of mostly Main Sequence normal and peculiar B, A, and F stars defines their properties and provides data for the comparison with analyses of somewhat similar stars and with theoretical predictions. Most use high dispersion and high S/N (≥ 200) spectrograms obtained with CCD detectors at the long camera of the 1.22-m Dominion Astrophysical Observatory telescope's coudé spectrograph. Here we expand the range of stars examined to include two relatively quiescent F supergiants. v Her (F2 II) and 41 Cyg (F5 Ib-II) are analyzed as consistently as possible with previous studies. These LTE fine analyses use the ATLAS9 and the WIDTH9 programs of R. L. Kurucz. High signal-to-noise spectrograms and high quality atomic data were employed. The derived values of these photometrically constant stars are somewhat different with the abundances of v Her being somewhat metal-poor and those of 41 Cyg being crudely solar-like. Our analyses indicate that the basic results of Luck & Wepfer (1995) who also studied v Her and 41 Cyg are not likely to be significantly changed by new studies of all their stars. © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.