Published December 1989
| Version v1
Report
IR emission from circumstellar envelopes of C-rich stars
- 1. European Space Agency, European Space Research and Technology Center, ESTEC, Noordwijk (Netherlands)
Description
The reliability of a theoretical model that solves the radiative transfer equation in dust clouds surrounding a central star is checked. In particular, it is found that both classical scattering by dust and the back-heating effects are negligible in the radiative transfer when envelopes similar to IRC+10216 are taken into consideration. In addition, new fits of IRC+10216 spectra are presented which were obtained, when the source is in different luminosity phases, under the assumption that amorphous carbon grains are in the circumstellar envelope. The same model is currently used to simulate the emission from carbon-rich sources showing the silicon carbide feature at 11.3 microns
Additional details
Publishing Information
- Imprint Title
- Interstellar dust; Contributed papers
- Imprint Pagination
- 512 p.
- Journal Page Range
- p. 505-506.
- Report number
- N--91-14897
Conference
- Title
- Interstellar dust symposium.
- Dates
- 26-30 Jul 1988.
- Place
- Santa Clara, CA (USA).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22062161
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Descriptors DEI
- CARBON; CARBON STARS; COSMIC DUST; COSMIC GASES; EMISSION SPECTRA; HEAT TRANSFER; INFRARED SPECTRA; MATHEMATICAL MODELS; SILICON CARBIDES; STAR MODELS; STELLAR ATMOSPHERES; THEORETICAL DATA; VARIABLE STARS
- Descriptors DEC
- ATMOSPHERES; CARBIDES; CARBON COMPOUNDS; DATA; DUSTS; ELEMENTS; ENERGY TRANSFER; FLUIDS; GASES; INFORMATION; MAIN SEQUENCE STARS; NONMETALS; NUMERICAL DATA; SILICON COMPOUNDS; SPECTRA; STARS
Optional Information
- Secondary number(s)
- NASA-CP--3036; A--89050; NAS--1.55:3036; CONF-8807213--.