Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...206..718s&link_type=abstract
Astrophysical Journal, vol. 206, June 15, 1976, pt. 1, p. 718-727.
Astronomy and Astrophysics
Astrophysics
249
Angular Distribution, Infrared Spectra, Nebulae, Radiant Heating, Cosmic Dust, Interstellar Matter, Optical Thickness, Radiative Transfer, Temperature Distribution
Scientific paper
The paper examines how radiative heating in an optically thick dust cloud may depend on the properties of the dust, its distribution, and the central luminous source. The falloff of grain temperature with radius in the cloud is calculated such that each grain is in radiative equilibrium. The spectra and angular distribution of the emitted IR radiation are obtained from the temperature distribution, several general results of the continuum radiative transfer are discussed, and the calculations are compared with observations in order to delimit the free parameters and discriminate among various alternative models. The dust models are then applied using observational data for the Kleinmann-Low nebula. It is inferred that the dust density distribution in this nebula is inversely proportional to radius, the emissivity between 30 microns and 1 mm varies approximately as the -1.5 power of wavelength, and the optical thickness to 70-micron radiation is of order unity.
Kwan Juliana
Scoville Nicholas Z.
No associations
LandOfFree
Infrared sources in molecular clouds 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 Infrared sources in molecular clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared sources in molecular clouds will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1781574