Hostname: page-component-7479d7b7d-qs9v7 Total loading time: 0 Render date: 2024-07-12T11:22:21.481Z Has data issue: false hasContentIssue false
  • English
  • Français

Steps to a New Calibration of the Spectral Type — Effective Temperature Relationship for Early-type Stars

Published online by Cambridge University Press:  04 August 2017

B. Bohannan ,
D. C. Abbott ,
S. A. Voels  and
D. G. Hummer
B. Bohannan
Affiliation:
Joint Institue for Laboratory Astrophysics and National Bureau of Standards Astrophysical, Planetary and Atmospheric Sciences University of Colorado Boulder, CO 80309 U.S.A.
D. C. Abbott
Affiliation:
Joint Institue for Laboratory Astrophysics and National Bureau of Standards Astrophysical, Planetary and Atmospheric Sciences University of Colorado Boulder, CO 80309 U.S.A.
S. A. Voels
Affiliation:
Joint Institue for Laboratory Astrophysics and National Bureau of Standards Astrophysical, Planetary and Atmospheric Sciences University of Colorado Boulder, CO 80309 U.S.A.
D. G. Hummer
Affiliation:
Joint Institue for Laboratory Astrophysics and National Bureau of Standards Astrophysical, Planetary and Atmospheric Sciences University of Colorado Boulder, CO 80309 U.S.A.

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.

The spectral type - effective temperature calibration is a cornerstone of our understanding of massive stars and their environment. Any uncertainty in determining their effective temperature is directly reflected in an uncertainty in defining the bolometric luminosity and the number of ionizing photons. We suggest that previous calibrations of bolometric luminosity and the number of ionizing photons as a function of spectral type may be uncertain by at least a factor of 3 for the early 0-type stars (Table 1).

Type
Poster Papers - Sessions 1 and 2
Information
Symposium - International Astronomical Union , Volume 116: Luminous Stars and Associations in Galaxies , 1986 , pp. 111 - 112
Copyright
Copyright © Reidel 1986 

References

Abbott, D. C. and Hummer, D. G. 1985, Astrophys. J. 179, 286.CrossRefGoogle Scholar
Conti, P. S. 1973, Astrophys. J. 179, 161.CrossRefGoogle Scholar
Kudritzki, R. P., Simon, K. P., and Hamann, W. R. 1983, Astron. Astrophys. 118, 245.Google Scholar
Mihalas, D. 1972, Non-LTE Model Atmospheres for B and O Stars (NCAR-TN/STR-76; Boulder, National Center for Atmospheric Research).Google Scholar
Panagia, N. 1973, Astrophys. J. 178, 929.Google Scholar