A&A Supplement series, Vol. 128, March II 1998, 429-439

Received February 26; accepted August 5, 1997

New Bootis stars with a shell

B. Hauck - D. Ballereau - J. Chauville

Send offprint request: B. Hauck

  Institut d'Astronomie de l'Université de Lausanne, CH-1290 Chavannes-des-Bois, Switzerland
  Observatoire de Paris-Meudon, DASGAL, F-92125 Meudon Principal Cedex, France

Abstract:

We publish here the second part of our spectroscopic survey at high dispersion of some known and suspected Bootis stars with a view to detecting circumstellar shell features. Eight stars of our sample exhibit such features. These stars are fast rotators, a result which is in line with Hohlweger and Rentzsch-Holm's study (1995). The analysis of the photometric data has allowed us to confirm the exclusion of a few stars misclassified from the Bootis group.

keywords: stars: chemically peculiar -- stars: circumstellar matter -- stars: rotation

• 1. Introduction
• 2. Observations and reduction
• 3. Photometric data
• 4. Stars with circumstellar component
• 5. Discussion
• 6. Conclusions
• References