A study of B-type supergiants with the uvby,beta photometric system

Details A study of B-type supergiants with the uvby,beta photometric system A study of B-type supergiants with the uvby,beta photometric system

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88..825z&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 88, June 1983, p. 825-834.

Astronomy and Astrophysics

Astronomy

32

B Stars, Stellar Spectrophotometry, Supergiant Stars, Calibrating, Stellar Color, Stellar Luminosity, Stellar Magnitude

Scientific paper

The applicability of the uvby,beta photometric system to the classification and study of B-type supergiants (BTS) is investigated using published data on 157 BTS and observations of 17 BTS made with the 36-in. reflector at McDonald Observatory. The results are presented in tabular form and analyzed to produce preliminary calibrations of luminosity class vs. beta index and of absolute magnitude (Mv) vs. beta (or delta Mv vs. delta beta) for four associations of stars. The effectiveness of various color indices as temperature indicators is discussed. It is shown that there is good correspondence between MK and uvby,beta classifications of B-type main-sequence stars, giants, and BTS, confirming the usefulness of the uvby,beta system in further research on BTS.

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