The symbiotic star near the globular cluster NGC 6401.
Abstract
Spectrophotometric observations of the emission line object near the globular cluster NGC 6401 discovered by Peterson (1977), Pt-1, are presented. It is found that Pt-1 is a symbiotic star and not a planetary nebula; its spectra show TiO bands in absorption and very strong H and He lines in emission, and there are no forbidden lines present. The observed He lines are about one order of magnitude stronger than predicted; it is suggested that this is partly due to collisional redistribution of the angular momentum for levels with n greater than 2.
- Publication:
-
Revista Mexicana de Astronomia y Astrofisica
- Pub Date:
- April 1980
- Bibcode:
- 1980RMxAA...5...51T
- Keywords:
-
- Globular Clusters;
- Star Distribution;
- Stellar Spectra;
- Binary Stars;
- Emission Spectra;
- Planetary Nebulae;
- Astrophysics