Elemental abundance analyses with DAO spectrograms: XXXII. HR 6455 (A3 III), delta Aqr (A3 V), eta Lep (F2 V), and 1 Boo (A1 V)

YÜCE K., Adelman S. J., Gulliver A. F., Hill G.

ASTRONOMISCHE NACHRICHTEN, cilt.332, sa.7, ss.681-689, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 332 Sayı: 7
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1002/asna.201111575
  • Dergi Adı: ASTRONOMISCHE NACHRICHTEN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.681-689
  • Anahtar Kelimeler: stars: abundances, stars: individual (HR 6455, delta Aqr, eta Lep, 1 Boo), ATOMIC TRANSITION-PROBABILITIES, METAL-POOR STARS, EXPERIMENTAL OSCILLATOR-STRENGTHS, NARROW-LINED STARS, R-PROCESS-RICH, ROTATIONAL VELOCITIES, SOLAR ABUNDANCE, MAIN-SEQUENCE, COMPOSITIONAL DIFFERENCES, CRITICAL COMPILATION
  • Ankara Üniversitesi Adresli: Evet

Özet

We examine the sharp-lined stars HR 6455 (A3 III, v sin i = 8.7 km s(-1)) and eta Lep (F2 V, v sin i = 13.5 km s(-1)) as well as delta Aqr (A3 V, v sin i = 81 km s(-1)) and 1 Boo (Al V, v sin i = 59 km s(-1)) to increase the number consistently analyzed A and F stars using high dispersion and high S/N (>= 200) spectrograms obtained with CCD detectors at the long Coude camera of the 1.22-m telescope of the Dominion Astrophysical Observatory. Such studies contribute to understanding systematic abundance differences between normal and non-magnetic main-sequence band chemically peculiar A and early F stars. LTE fine analyses of HR 6455, delta Aqr, and 1 Boo using Kurucz's ATLAS suite programs show the same general elemental abundance trends with differences in the metal richness. Light and iron-peak element abundances are generally solar or overabundant while heavy element and rare earth element abundances are overabundant. HR 6455 is an evolved Am star while 6 Aqr and 1 Boo show the phenomenon to different extents. Most derived abundances of 77 Lep are solar. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim