Hostname: page-component-77c89778f8-n9wrp Total loading time: 0 Render date: 2024-07-18T07:29:43.097Z Has data issue: false hasContentIssue false
  • English
  • Français

The Temperature Scale of G and K Subgiants

Published online by Cambridge University Press:  04 August 2017

U. O. Frisk  and
R. A. Bell
U. O. Frisk
Affiliation:
Space Science Department, ESA
R. A. Bell
Affiliation:
National Science Foundation

Abstract

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.

This investigation of nearby Population I stars was motivated by our need for accurate effective temperatures in order to be able to obtain reliable N abundances from lines belonging to the CN red system. These determinations are based on narrowband photometry calibrated by means of synthetic spectra. It is believed that the temperatures are accurate to within 100 K. The results show that recent calculations of evolutionary tracks of G and K subgiants predict the observations quite well. However, a value for the mixing length parameter 1/Hp close to 1.6 is required.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 111: Calibration of Fundamental Stellar Quantities , 1985 , pp. 543 - 545
Copyright
Copyright © Reidel 1985 

References

Arvesen, J. C., Griffin, R. N. and Pearson, B. D. Jr. 1969, Appl. Optics 8, 2215.Google Scholar
Bell, R. A., Eriksson, K., Gustafsson, B. and Nordlund, A. 1975, Astron. Astrophys. Suppl. 23, 37.Google Scholar
Bell, R. A. and Gustafsson, B. 1978, Astron. Astrophys. Suppl. 34, 229.Google Scholar
Dreiling, L. A. and Bell, R. A. 1980, Astrophys. J. 241, 736.Google Scholar
Frisk, U. O., Bell, R. A., Gustafsson, B., Nordh, H. L. and Olofsson, S. G. 1982, Mon. Not. R. Astr. Soc. 199, 471.CrossRefGoogle Scholar
Holweger, H. and Müller, E. A. 1974, Solar Phys. 39, 19.CrossRefGoogle Scholar
Labs, D. and Neckel, H. 1968 Zeits. f. Astrophys. 69, 1.Google Scholar
VandenBerg, D. A. 1983, Astrophys. J. Suppl. 51, 29.CrossRefGoogle Scholar
Vernazza, J. E., Avrett, E. H. and Loeser, R. 1976, Astrophys. J. Suppl. 30, 1.CrossRefGoogle Scholar