Far-ultraviolet observations of the globular cluster 47 Tucanae.
Abstract
Observations of 47 Tuc in five bands between 1550 and 3300 A by the Astronomical Netherlands Satellite are presented. The brightness distribution at 2200 and 3300 A agrees well with that in U; the color index C22-33 does not vary with radius. The excess flux between 1550 and 2500 A, observed at one position, is attributed to the B 8 III star in the cluster; the ultraviolet observations indicate a spectral type around A 0.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 1976
- Bibcode:
- 1976A&A....52...59D
- Keywords:
-
- Far Ultraviolet Radiation;
- Globular Clusters;
- Ultraviolet Photometry;
- A Stars;
- Astronomical Netherlands Satellite;
- B Stars;
- Brightness;
- Spaceborne Astronomy;
- Spectral Bands;
- Spectral Energy Distribution;
- Astronomy