3 papers
astro-ph1999
How many lambda Boo stars are binaries ?
Rosanna Faraggiana, Piercarlo Bonifacio
In the attempt to shed new light on the lambda Boo phenomenon we analyzed the astrometric, photometric and spectroscopic characteristics of stars out of a list of recently selected…
astro-ph1998
Definitions of the Lambda Boo stars
R. Faraggiana, M. Gerbaldi
Since the identification of these stars by Morgan et al. in 1943, various definitions have been proposed for the stars of the Lambda Bootis group. We present here the various defin…
astro-ph1998
Determination of T_eff and log g for A0 type stars and its impact on the interpretation of the HR diagram with the HIPPARCOS results
M. Gerbaldi, R. Faraggiana, R. Burnage +3
The determination of the ``Fundamental Parameters'' T_eff and log g for a set of dwarf A0-type stars is discussed in terms of consistency when comparing these values determined thr…