Radiative transfer in spherical circumstellar dust envelopes. II. Is the infrared continuum of Eta Carinae produced by thermal dust emission?
Abstract
The radiative transfer techniques of Huang have been further extended in an attempt to construct a specific thermal dust-emission model of eta Carinae which fits the observations of both the spectral and the spatial distribution of the infrared radiation. The model which best fits the observations requires infrared emissivities considerably higher than those of normal-size nonsilicate grains. Evidence is presented that the high infrared emissivities are caused by large particles rather than a heavy concentration of infrared-active silicates. The possibility that synchrotron radiation is responsible for some of the infrared continuum is discussed.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 1975
- DOI:
- 10.1086/153464
- Bibcode:
- 1975ApJ...196..753A
- Keywords:
-
- Cosmic Dust;
- Infrared Astronomy;
- Radiative Transfer;
- Stellar Envelopes;
- Synchrotron Radiation;
- Astronomical Models;
- Emission Spectra;
- Silicates;
- Thermal Emission;
- Astrophysics