On the scale of photospheric convection in red giants and supergiants.
Abstract
An attempt is made to estimate the sizes of the convective elements which dominate the brightness variations on the photospheres of red giants and supergiants. The data assembled permit the extreme hypothesis that these dominant convective elements are so large that only a modest number of them exists at any one time on the entire surface of such a star - in contrast with two million granules on the sun.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 1975
- DOI:
- 10.1086/153313
- Bibcode:
- 1975ApJ...195..137S
- Keywords:
-
- Giant Stars;
- Late Stars;
- Photosphere;
- Solar Granulation;
- Supergiant Stars;
- Astronomical Models;
- Convective Flow;
- Gas Ionization;
- Stellar Mass Ejection;
- Stellar Winds;
- Astrophysics