Submillimetre observations of galaxies - I. First results.
Abstract
We present the first results from a programme of millimetre and submillimetre observations of galaxies using the UKT14 photometer at the JCMT. Three of the five objects discussed here are detected at 450 microns, and most at 800 microns as well. We perform fits to the dust spectrum for these objects, and find that dust temperatures of 28-35 K with a ν^2^ emissivity law give the best results. We also investigate the beam corrections that would need to be made if the cool dust distribution were extended, and find that it is possible to hide a substantial amount of cold dust from our observations if this is the case. Future observations using bolometer arrays or large-beam instruments will be necessary to determine whether such a large cold component is actually present.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- March 1993
- DOI:
- 10.1093/mnras/261.2.299
- Bibcode:
- 1993MNRAS.261..299C
- Keywords:
-
- Cosmic Dust;
- Galaxies;
- Interstellar Matter;
- Radio Astronomy;
- Submillimeter Waves;
- Interstellar Extinction;
- Millimeter Waves;
- Radio Emission;
- Astronomy