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How many Bootis stars are binaries? *
Rosanna Faraggiana 1 and
Piercarlo Bonifacio 2
Received 15 January 1999 / Accepted 7 June 1999
In the attempt to shed new light on the Boo phenomenon we analyzed the astrometric, photometric and spectroscopic characteristics of stars out of a list of recently selected Boo candidates.
We show that the class is still ill-defined and discuss the possibility that some, if not most stars presently classified as Boo, are in fact binary pairs and that peculiar abundances may not correspond to actual values if the average values of the atmospheric parameters and log g are assumed and the effect of veiling is not taken into account.
Key words: stars: atmospheres stars: abundances stars: chemically peculiar
Send offprint requests to: R. Faraggiana
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Online publication: September 2, 1999