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Modelling the iras colors of galaxies
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Helou, George |
| Copyright Year | 1987 |
| Description | A physical interpretation is proposed for the color-color diagram of galaxies which are powered only by star formation. The colors of each galaxy result from the combination of two components: cirrus-like emission from the neutral disk, and warmer emission from regions directly involved in on-going star formation. This approach to modelling the emission is based on dust properties, but independent evidence for it is found in the relation between the color sequence and the luminosity sequence. Implications of data and interpretations are discussed and possible tests mentioned for the model. |
| File Size | 292212 |
| Page Count | 4 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870014880 |
| Archival Resource Key | ark:/13960/t8sb8zw4s |
| Language | English |
| Publisher Date | 1987-05-01 |
| Access Restriction | Open |
| Subject Keyword | Astronomy Hertzsprung-russell Diagram Color Luminosity H Alpha Line Infrared Astronomy Infrared Astronomy Satellite Galactic Structure Dust Particle Size Distribution Thermal Emission Star Formation Emission Spectra Astronomical Models Color-color Diagram Ntrs Nasa Technical Reports ServerĀ (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |