A&A Supplement series, Vol. 129, May I 1998, 563-567

Received April 2; accepted October 30, 1997

Elemental abundance analyses with Complejo Astronomico El Leoncito REOSC echelle spectrograms

III. HR 4487, 14 Hydrae, and 3 Centauri A

O.I. Pintado - S.J. Adelman - A.F. Gulliver

Send offprint request: S.J. Adelman

  Complejo Astronómico El Leoncito, CC 468, 5400 San Juan, Argentina
  Departament of Physics, The Citadel, 171 Moultrie Street, Charleston, SC 29409, U.S.A.
e-mail: adelmans@citadel.edu
  Department of Physics and Astronomy, Brandon University, Brandon, MB R7A 6A9, Canada

Abstract:

Using CASLEO echelle spectrograms, elemental abundances are derived for the sharp-lined non-magnetic CP stars HR 4487, 14 Hya, and 3 Cen A. The first two stars are members of the Mercury-Manganese subgroup and have abundances which are similar to other such peculiar stars. The third is a hotter related star. The detection of Mn II lines in its spectrum adds to this relationship.

keywords: stars: abundances -- stars: chemically peculiar -- stars: individual: HR 4487, 14 Hya, 3 Cen A

• 1. Introduction
• 2. Effective temperatures and surface gravities
• 3. Reduction of spectrograms
• 4. The elemental abundance analyses
• 5. Discussion
• References