Elemental abundance analyses with the EBASIM spectrograph of the 2.1-m CASLEO Observatory Telescope^*

I. The late B and early A stars Octantis, Sextantis, and 68 Tauri

¹ Departamento de Física, Facultad de Ciencias Exactas y Tecnología, Universidad Nacional de Tucumán, Av. Independencia 1800, 4000 San Miguel de Tucumán, Argentina e-mail: opintado@tucbbs.com.ar
² Department of Physics, The Citadel, 171 Moultrie Street, Charleston, SC 29409, USA
³ Guest Investigator, Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council of Canada, 5071 W. Saanich Road, Victoria, BC V9E 2E7 Canada

Corresponding author: S. J. Adelman, adelmans@citadel.edu

Received: 7 April 2003
Accepted: 27 May 2003

Abstract

We used data from the EBASIM spectrograph of the 2.1-m CASLEO telescope to study three rather sharp-lined late B to early A stars ξ Oct (B6 IV), α Sex (B9.5 III), and 68 Tau (A2 IV). These measurements are compared with those from the Anglo-Austrialian Telescope for the first star and to those from the coudé spectrograph of the 1.22-m telescope of the Dominion Astrophysical Observatory (DAO) for the other two stars. The equivalent width scales of the EBASIM and the DAO data are similar. Thus for the latter two stars the DAO data is also used in the analyses. Both ξ Oct and α Sex generally have abundances close to those of the Sun in the range of values found for other normal stars with similar effective temperatures. The abundance pattern for 68 Tau is that of a metallic-lined star as is well known.