200-µm ISO observations of NGC 6946: evidence for an extended distribution of cold dust
| Autor: | M. Trewhella, Jonathan Ivor Davies, P. B. Alton, Simone Bianchi, R. Evans |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Luminous infrared galaxy
Physics Spiral galaxy Hydrogen Infrared Astronomy chemistry.chemical_element Astronomy and Astrophysics Far-infrared astronomy Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Mass ratio Radial direction chemistry Space and Planetary Science Circumstellar dust Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics::Galaxy Astrophysics |
| Popis: | We have used the Infrared Space Observatory (ISO) to obtain a resolved 200-μm image of the nearby spiral galaxy NGC 6946. We compare these observations with those made at 60 and 100 μm by the Infrared Astronomical Satellite (IRAS). Whereas IRAS mainly detected warm dust (T ~ 30 K) heated by star-forming regions, ISO detects an extended distribution of cold dust (T |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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