The spectrum of the SB2 HD 64491 and the problem of metal abundances in lambda Boo stars

Details The spectrum of the SB2 HD 64491 and the problem of metal abundances in lambda Boo stars The spectrum of the SB2 HD 64491 and the problem of metal abundances in lambda Boo stars

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...398..697f&link_type=abstract

Astronomy and Astrophysics, v.398, p.697-704 (2003)

Astronomy and Astrophysics

Astrophysics

6

Stars: Atmospheres, Stars: Binaries: Spectroscopic, Stars: Chemically Peculiar

Scientific paper

The spectrum of the classical lambda Boo star HD 64491 reveals that the object is a double-lined spectroscopic binary whose components have different v sin i values. From such a tangled spectrum, we show that large metal underabundances can be derived with the hypothesis that the spectrum is formed by a single object, while the abundance peculiarities are drastically reduced when the duplicity is taken into account.
Based on observations collected at the Observatoire du Pic du Midi (France).

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