| |
 |
| Paper: |
The brightest stars as distance indicators |
| Volume: |
4, The Extragalactic Distance Scale: Proceedings of the ASP 100th Anniversary Symposium |
| Page: |
103 |
| Authors: |
Humphreys, Roberta M. |
| Abstract: |
The luminosities of the brightest early-type supergiants have a well known dependence on the luminosity of the galaxy. In addition, many of the brightest blue 'stars' are actually compact HII regions, clusters, and composite images. This is a serious problem in increasingly distant galaxies. Therefore, they are not recommended as distance indicators. The brightest M supergiants have an upper bound to their bolometric luminosities due to the stability limit of the most massive evolved stars, making the red supergiants potentially powerful distance indicators. |
|
|
|
|
|
