Hostname: page-component-848d4c4894-m9kch Total loading time: 0 Render date: 2024-05-02T09:25:42.569Z Has data issue: false hasContentIssue false
  • English
  • Français

A Preliminary Luminosity Calibration of the Uvby, β Systems for Supergiant F-Type Stars

Published online by Cambridge University Press:  04 August 2017

E. Antonello
E. Antonello*
Affiliation:
Astronomical Observatory of Brera, Milano-Merate

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Calibrations of the uvby, β photometric systems have been made by Crawford (1975, 1978, 1979) for F, B and late A-type stars of luminosity class V-III; the calibration for early A-type stars has been made by Hilditch et al. (1983). One of the remaining areas of the HR diagram to be calibrated is that of the bright giant to supergiant region (luminosity class II-I). We have attempted to obtain a calibration in terms of luminosity for supergiant F-type stars. To this end we have used the statistical method of multiple stepwise regression analysis. Before doing the calibration for supergiants, we show the usefulness of this method by a comparison of the results obtained for dwarf F-type stars with the previous calibration given by Crawford (1975).

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 111: Calibration of Fundamental Stellar Quantities , 1985 , pp. 491 - 494
Copyright
Copyright © Reidel 1985 

References

Antonello, E. 1983, in Proc. Coll. Statistical Methods in Astronomy, (ESA: Strasbourg SP-201), p.145.Google Scholar
Buzzi-Ferraris, G. 1975, Analisi ed identificazione di modelli, (Milano: CLUP), p.37.Google Scholar
Crawford, D. L. 1975, Astron. J., 80, 955.Google Scholar
Crawford, D. L. 1979, Astron. J., 83, 48.Google Scholar
Crawford, D. L. 1979, Astron. J., 84, 1858.Google Scholar
Efroymson, M. A. 1964, in Mathematical Methods for Digital Computers, eds. Ralston, A. and Wilf, H. S., (New York: J. Wiley), p.191.Google Scholar
Fernie, J. D. and McGonegal, R. 1983, Astrophys. J., 275, 732.Google Scholar
Hauck, B. and Mermilliod, M. 1980, Astron. Astrophys. Suppl., 40, 1.Google Scholar
Hilditch, R. W., Hill, G. and Barnes, J. V. 1983, Monthly Notices Roy. Astron. Soc., 204, 241.Google Scholar