Far-infrared sources in the vicinity of the supernova remnant W 28.
Abstract
The W28 supernova remnant molecular cloud complex has been surveyed in the 40-250 micron spectral range with a three-sigma sensitivity of 100-165 Jy per beam. Only two sources have been found. One, located near the center of the SNR, has a luminosity of 54,000 solar luminosities and can be identified with the thermal radio source G6.6-0.1. The energizing source is probably an O-type ZAMS star. The second source, which is near the boundary of the SNR at a sharp gradient of OH absorption, has a luminosity of 6000 solar luminosities and has no radio counterpart. It is best explained as a B1 ZAMS star or a pre-main sequence object presumably formed from the impact of an expanding SNR with a molecular cloud. No far-IR emission is observed at the position of the CO molecular cloud, which seems to have been impacted by the SNR.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- April 1984
- DOI:
- 10.1086/161877
- Bibcode:
- 1984ApJ...279..162O
- Keywords:
-
- Far Infrared Radiation;
- Infrared Astronomy;
- Interstellar Radiation;
- Molecular Clouds;
- Nebulae;
- Supernova Remnants;
- Astronomical Spectroscopy;
- B Stars;
- Gas Heating;
- Hydrogen Clouds;
- Luminosity;
- O Stars;
- Radio Sources (Astronomy);
- Shock Fronts;
- Astrophysics