Predicted and observed spectrum of M5.
Abstract
From a recently published, statistically complete HR diagram of the globular cluster M5, the number distribution of HB stars as a function of the effective temperature is derived and the bolometric luminosities obtained via the conversion tables by Kurucz (1979). The expected UV energy distribution is then computed and compared with the IUE and OAO data. A very good agreement is found, reducing the possibility that large systematic errors are present in the optical stellar photometry of this cluster. The observed UV flux does not seem contaminated by field or cluster UV-bright stars.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- May 1983
- Bibcode:
- 1983A&A...121..325N
- Keywords:
-
- Globular Clusters;
- Star Distribution;
- Stellar Luminosity;
- Stellar Spectrophotometry;
- Ultraviolet Spectra;
- Bolometers;
- Hertzsprung-Russell Diagram;
- Spectral Energy Distribution;
- Astrophysics