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A&A 427, 1009-1017 (2004)
DOI: 10.1051/0004-6361:20041460
Chemical analysis of 24 dusty (pre-)main-sequence stars
B. Acke and C. WaelkensInstituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200B, 3001 Leuven, Belgium
e-mail: bram.acke@ster.kuleuven.ac.be
(Received 14 June 2004 / Accepted 6 August 2004 )
Abstract
We have analysed the chemical photospheric composition of
24 Herbig Ae/Be and Vega-type stars in search for the
Bootis
phenomenon. We present the results of the elemental abundances of the
sample stars. Some of the stars were never before studied
spectroscopically at optical wavelengths. We have determined the
projected rotational velocities of our sample stars.
Furthermore, we discuss stars that depict a (selective) depletion
pattern in detail.
HD 4881
and
HD 139614
seem to display an
overall deficiency.
AB Aur
and possibly
HD 126367
have
subsolar values for the iron abundance, but are almost solar in
silicon.
HD 100546
is the only clear
Bootis star in our
sample.
Key words: stars: abundances -- stars: chemically peculiar -- stars: planetary systems: protoplanetary disks -- stars: pre-main-sequence -- stars: individual: HD 100546
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