What are Lbv's? - Their Characteristics and Role in the Upper H-R Diagram
Abstract
The shared properties of luminous blue variables (LBVs), which include the S Dor variables, Hubble-Sandage variables, and P Cyg stars, are discussed. These properties include similarities in variability, spectra, temperature variations, high intrinsic luminosity, high mass-loss rates, and excess of IR radiation and circumstellar ejecta. The role of LBVs in the upper H-R diagram and their relationship to other evolved, massive stars are examined in the context of the obvious upper envelope to stellar luminosities in the H-R diagram.
- Publication:
-
IAU Colloq. 113: Physics of Luminous Blue Variables
- Pub Date:
- 1989
- DOI:
- 10.1007/978-94-009-1031-7_1
- Bibcode:
- 1989ASSL..157....3H
- Keywords:
-
- Blue Stars;
- Hertzsprung-Russell Diagram;
- Stellar Luminosity;
- Stellar Mass;
- Variable Stars;
- Cygnus Constellation;
- Hot Stars;
- Stellar Mass Ejection;
- Temperature Dependence;
- Astrophysics