Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...265..726z&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 265, no. 2, p. 726-732.
Astronomy and Astrophysics
Astronomy
46
Cosmic Dust, Infrared Sources (Astronomy), Protostars, Stellar Evolution, Stellar Luminosity, Submillimeter Waves, Brightness Temperature, Infrared Astronomy Satellite, Interstellar Matter, Radiative Transfer, Spectral Energy Distribution, Stellar Models
Scientific paper
The paper presents submillimeter dust continuum observations of three low-luminosity (about 10-solar-luminosity) protostellar IRAS sources obtained at the JCMT: IRAS 05295+1247, IRAS 04016+2610, and IRAS 05413-0104. All sources have steeply rising spectral energy distributions, indicating that they are embedded heavily in dusty envelopes. Characteristic properties of the protostellar envelopes are derived using a spherically symmetric radiative-transfer model and taking into account ice-coated grains as a major ingredient providing a high dust opacity and a dust emissivity index beta of about 1.
Arcoragi Jean-Pierre
Bastien Pierre
Yorke Harold W.
Zinnecker Hans
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