High supernova rate and enhanced star-formation triggered in M81-M82 encounter
Abstract
It is a general belief that the starburst activity of a nearby galaxy M82 was triggered in a close encounter with its massive companion M81, a few tens of million years ago. Despite the lack of supernovae observed, multiwavelength radio observations of M82 discovered a considerable number of compact supernova remnant candidates. We use these remnants to estimate the supernova rate (SNR) and the enhanced star-formation (SFR) rate in M82, and compare them with rates in normal galaxies.
- Publication:
-
Triggered Star Formation in a Turbulent ISM
- Pub Date:
- 2007
- DOI:
- 10.1017/S1743921307001792
- Bibcode:
- 2007IAUS..237..391A