On intrinsic colors of the normal supergiants and the distribution of interstellar reddening material.
Abstract
An assumption is made that the reddening material within 5 kpc of the sun is present in a plane-parallel layer having a thickness of 500 pc. It is then shown that for more than 99% of a sample of supergiant stars, the mean minimum reddening is 0.082 mag/kpc of transit through the layer material. This fact can be used to in&ease the sample of objects on which a measure- ment of intrinsic color can be based. In addition, this fact gives freedom from the assumption, usually necessary in determining intrinsic color, that some of the objects in a sample are free from reddening.
- Publication:
-
The Astronomical Journal
- Pub Date:
- October 1978
- DOI:
- 10.1086/112310
- Bibcode:
- 1978AJ.....83.1195K
- Keywords:
-
- Colorimetry;
- Interstellar Extinction;
- Spatial Distribution;
- Supergiant Stars;
- Astronomical Catalogs;
- Globular Clusters;
- Interstellar Matter;
- Astrophysics;
- Colors:Supergiants;
- Interstellar Reddening