The radio source associated with the G-type supergiant HR 8752.
Abstract
Thermal emission from an interstellar envelope is proposed as the mechanism for radio emission from the G-type supergiant HR 8752 (GOIa). A table of flux densities derived from NRAO (Green Bank) is presented and fit to thermal emission models. If outflow velocity is assumed, mass-loss rates and shell density could be calculated from the data at hand. Temperatures in the 4000 K range are deduced, and deviations from this value may be explained by a time-variable phenomenon.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 1978
- DOI:
- 10.1086/182646
- Bibcode:
- 1978ApJ...220L.109H
- Keywords:
-
- G Stars;
- Radio Astronomy;
- Radio Stars;
- Stellar Envelopes;
- Supergiant Stars;
- Continuous Spectra;
- Radiant Flux Density;
- Stellar Magnitude;
- Stellar Mass Ejection;
- Stellar Spectra;
- Thermal Emission;
- Astronomy;
- Circumstellar Shells:Radio Stars;
- Late-Type Supergiants:Radio Radiation