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A Preliminary Test of the Calibration of the Hβ System in Terms of Absolute Magnitudes and Intrinsic Colours for Early-Type Stars

Published online by Cambridge University Press:  07 February 2017

A. F. J. Moffat ,
Th Schmidt-Kaler  and
N. Vogt
A. F. J. Moffat
Affiliation:
Astronomisches Institut der Ruhr-Universität Bochum, F.R.G.
Th Schmidt-Kaler
Affiliation:
Astronomisches Institut der Ruhr-Universität Bochum, F.R.G.
N. Vogt
Affiliation:
Astronomisches Institut der Ruhr-Universität Bochum, F.R.G.

Abstract

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The dependency of the Hβ-index on two physical parameters is briefly discussed. The previous calibration of Mv(β) (Fernie, 1965 or Crawford, 1971) is confirmed for main sequence O and B stars; however, the β-values of the later B-supergiants tend to be too large for their absolute magnitudes. The problem of filtering out stars with marginal emission is emphasized.

Type
Part IV: Absolute Magnitude Determinations from Hydrogen-Line Photometry
Information
Symposium - International Astronomical Union , Volume 54: Problems of Calibration of Absolute Magnitudes and Temperature of Stars , 1973 , pp. 114 - 116
Copyright
Copyright © Reidel 1973 

References

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