Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3084..116t&link_type=abstract
In NASA, Ames Research Center, The Interstellar Medium in External Galaxies: Summaries of Contributed Papers p 116-119 (SEE N91-
Astronomy and Astrophysics
Astronomy
Cosmic Dust, Emittance, Energy Budgets, Far Infrared Radiation, Galactic Radiation, Galaxies, Infrared Astronomy Satellite, Luminosity, Neutral Gases, Photometry, Balance, Continuums, Cores, Surveys
Scientific paper
Several arguments can be made to study the continuum emission from dust in galaxies at wavelengths between the cutoff of the Infrared Astronomy Satellite (IRAS) survey (about 100 microns) and the shortest wavelength that is commonly accessible from the ground (about 350 microns). Some theoretical work (see the summary by Cox and Mezger 1989) indicates that there are very cool (Td less than or equal to 25 K) components to the dust emission that emit primarily at wavelengths between 100 and 250 microns. In fact, a significant fraction of the total luminosity, representing a large fraction of the dust mass in some types of galaxies, is emitted at long far-infrared wavelengths. In such cases, the cool dust must play a major role in regulation of the energy balance of the Interstellar Medium (ISM) and in shielding the cores of neutral clouds.
Casey Sean
Engargiola Greg
Harper Doyal A.
Hunter Deidre Ann
Thronson Harley A. Jr.
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