Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26as...50..261d&link_type=abstract
Astronomy and Astrophysics Supplement Series, vol. 50, Nov. 1982, p. 261-275. Deutsche Forschungsgemeinschaft
Astronomy and Astrophysics
Astrophysics
9
B Stars, Early Stars, Galactic Structure, O Stars, Stellar Spectrophotometry, Ubv Spectra, Cosmic Dust, H Beta Line, Interstellar Matter, Open Clusters, Supergiant Stars
Scientific paper
Results are reported for photoelectric UBV and H-beta photometry of 316 luminous OB stars and early-type supergiants in the region between 335 and 6 deg galactic longitude. UBV magnitudes for the 316 stars and beta indexes for 37 of them are presented. Absolute magnitudes, distances, and color excesses are determined for the 161 stars with measured beta indexes or known MK spectral types. The results are discussed in terms of the spiral structure of the Galaxy. From the data obtained for program stars assumed to be cluster members, distances are derived for the open clusters NGC 6167 (1.7 kpc), NGC 6193 (1.3 kpc), Hogg 22 (2.0 kpc), NGC 6231 (1.9 kpc), and Tr 27 (1.6 kpc).
Dachs Joachim
Kaiser David
Nikolov Aleksandar
Sherwood W. A.
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