New lambda Bootis stars with a shell

Details New lambda Bootis stars with a shell New lambda Bootis stars with a shell

1997-09-02

arxiv.org/abs/astro-ph/9709015v1

Astronomy and Astrophysics

Astrophysics

13 pages, 12 figures, accepted for publication in A&A Suppl. Ser

Scientific paper

10.1051/aas:1998154

We publish here the second part of our spectroscopic survey at high dispersion of some known and suspected lambda 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 Holweger 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 lambda Bootis group.

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