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

• Published in: Astronomische Nachrichten Vol. 332; no. 7; pp. 681 - 689
• Main Authors: Yuece, K, Adelman, S J, Gulliver, A F, Hill, G
• Format: Journal Article
• Language: English
• Published: 01.08.2011
• Subjects: Abundance; Deltas; Dispersions; F stars; Rare earth elements; Space telescopes; Spectrograms; Stars
• ISSN: 0004-6337; 1521-3994
• DOI: 10.1002/asna.201111575

We examine the sharp-lined stars HR 6455 (A3 III, v sin i = 8.7 km s super(-1)) and eta Lep (F2 V, v sin i = 13.5 km s super(-1)) as well as [delta] Aqr (A3 V, v sin i = 81 km s super(-1)) and 1 Boo (A1 V, v sin i = 59 km s super(-1)) to increase the number consistently analyzed A and F stars using high dispersion and high S/N ( greater than or equal to 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 [delta] Aqr and 1 Boo show the phenomenon to different extents. Most derived abundances of eta Lep are solar ( copyright 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)