Supernova 1987A at 1.3 mm.
Abstract
The Supernova 1987A in the Large Magellanic Cloud was detected at 1.3mm with a flux density of 54 +/- 9 mJy during September 7-9 1988 with the 15m mm-telescope SEST at La Silla (ESO)> We interpret the radiation as due to free-free emission from the weakly ionized outer part of the former star now expanding homologously. The temperature of the gas emitting the free-free emission is so low as to suggest that dust has formed in the former stars envelope. In order for the optical photosphere to be observable at <= 25 mas diameter this dust has to be distribution in an extremely clumpy manner.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- January 1990
- Bibcode:
- 1990A&A...227L..21B
- Keywords:
-
- Magellanic Clouds;
- Millimeter Waves;
- Radio Astronomy;
- Supernova 1987a;
- Abundance;
- Pulsars;
- Radiative Transfer;
- Stellar Envelopes;
- Supernova Remnants;
- Astrophysics