UBV, Hβ and polarization measurements of 1660 southern OB stars.
Abstract
UBV H and polarization data for all 1660 southern OB stars of the Heidelberg catalogue are presented. The UBV and H measurements were carried out on the Gamsberg in South West Africa from 1973 to 1975. The reduction methods for the UBV observations were discussed with special regard to small differences between the effective wavelengths of the instrumental and standard spectral regions. The dependence of the (U - B) extinction coefficient from the spectral type is also discussed. For all stars without H emission photometric MK spectral types, absorption values and distances were derived and listed. Key words: southern OB stars - UBV, H and polarization measurements - spiral structure
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- February 1977
- Bibcode:
- 1977A&AS...27..215K