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Peering beyond iras: the 100 to 350 micron dust emission from galaxies
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Harper, D. A. Hunter, Deidre A. Casey, Sean Thronson Jr., Harley A. Engargiola, Greg |
| Copyright Year | 1990 |
| Description | 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 (T sub d 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. |
| File Size | 1266014 |
| Page Count | 4 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910004828 |
| Archival Resource Key | ark:/13960/t3fz2619b |
| Language | English |
| Publisher Date | 1990-07-01 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Neutral Gases Galaxies Luminosity Infrared Astronomy Satellite Galactic Radiation Cores Surveys Far Infrared Radiation Energy Budgets Emittance Cosmic Dust Continuums Balance Photometry Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
