BA II lines as luminosity indicators: s-Cepheids and non-variable supergiants
Abstract
Ba II line equivalent widths appear to be well correlated with the absolute magnitudes for yellow supergiants. Two Ba II lines 5853.6 Angstroms and 6141.7 Angstroms were applied for investigation of the possible relation between their equivalent widths and Mv for small-amplitude Cepheids and non-variable supergiants.
- Publication:
-
Astronomische Nachrichten
- Pub Date:
- July 1998
- DOI:
- 10.1002/asna.2123190405
- Bibcode:
- 1998AN....319..239A