Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....98..125y&link_type=abstract
Astronomy and Astrophysics, vol. 98, no. 1, May 1981, p. 125-132.
Astronomy and Astrophysics
Astrophysics
48
Cosmic Dust, Infrared Stars, Protostars, Radiative Transfer, Stellar Envelopes, Stellar Spectra, Absorption Spectra, Absorptivity, Density Distribution, Emission Spectra, Infrared Spectra, Optical Thickness, Radii, Stellar Temperature, Sublimation
Scientific paper
Model spectra of dusty envelopes that surround a centrally embedded source are calculated under the assumption of spherical symmetry and discussed in light of selected observations of protostellar candidates. Several model parameters are varied systematically: the total optical depth of the envelope, its density distribution, its outer radius, the temperature of the central source and the sublimation temperature of the refractory dust component. A two-component dust model with refractory and volatile grains is assumed. Also presented are models without the volatile component. The ratio of the 10-micron absorption coefficient to its adjacent continuum is varied systematically over a large range. The depth of the resultant 10-micron feature is analyzed in light of these results. A connection is then made between these model spectra and the evolutionary stages of protostellar envelopes. Owing to the large deviations from blackbody spectra, a single effective temperature or radius cannot be defined for such objects; their effective sizes are strongly wavelength dependent.
Shustov Boris M.
Yorke Harold W.
No associations
LandOfFree
The spectral appearance of dusty protostellar envelopes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The spectral appearance of dusty protostellar envelopes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The spectral appearance of dusty protostellar envelopes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1440656