Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26as...55..109f&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 55, Jan. 1984, p. 109-141. Sponsorship: Deutsche Forschungsg
Astronomy and Astrophysics
Astronomy
388
A Stars, Astronomical Catalogs, B Stars, Early Stars, Stellar Envelopes, Stellar Evolution, Emission Spectra, H Alpha Line, Herbig-Haro Objects, Infrared Astronomy, Protostars, Stellar Winds, Variable Stars
Scientific paper
A catalog of 57 Herbig Ae/Be stars and Herbig Ae/Be star candidates is presented. Fifty percent of the stars have double-peak H-alpha profiles separated by a nearly unshifted absorption component, while 25 percent have single-peak H-alpha profiles and 20 percent have P Cygni profiles. Qualitative wind properties are derived for stars with P Cygni line profiles in H-alpha and Na D. The photometric variation properties of early and late type Herbig Ae/Be stars are found to be quite different. The IR excesses of Herbig Ae/Be stars are much stronger than those of ordinary Be stars, and the two stellar groups are shown to be well separated in the H-K, K-L two-color diagram. Stars later than B6 are generally located above the main sequence in the HR diagram, which confirms that most of these stars are still in the premain-sequence stage of evolution.
Finkenzeller Ulrich
Mundt Reinhard
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