Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.266..337t&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 266, p. 337
Astronomy and Astrophysics
Astronomy
9
Spatial Distribution, O Stars, B Stars, Early Stars, Stellar Spectra, Astronomical Catalogs, Astronomical Photography, Interplanetary Dust
Scientific paper
Forty two OB stars have been observed with the space telescope Glazar at 1640 A in an area of about 17 sq deg in the direction of the stellar associations Aur OB 1 and 2. Twenty five of the observed stars of known spectral type and with colorimetric data are assigned to four star groups: a B association at a distance of 600 pc and three O associations at distances of 1100, 2000 and 3000 pc respectively, designated Aur B 0.6, Aur OB 1.1, Aur OB 2.0, and Aur OB 3.0. Fourteen stars of unknown spectral type should be OB or at least early-A-type stars, since their images were obtained on photographs taken with Glazar. The latest possible spectral types of these stars and also of stars for which the spectral types are known only roughly are determined. There is a more or less uniform dust cloud in front of the dense parts of the three distant associations, which introduces an extinction of about 3.5 mag at 1640 A.
Epremyan R. A.
Huguenin Daniel
Ovanesyan Kh. R.
Tovmasyan H. M.
No associations
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