Ring galaxies as the cradle of ULXs
Abstract
Ring galaxies, characterized by high star formation rates, enhanced X-ray emission, and large numbers of ULXs, are unique laboratories where the effects of galaxy interactions in the X-ray band can be studied. However the results are based on a very scanty sample of 4 published galaxies. We selected the collisional rings (z<0.02) from the Arp&Madore sample of southern ring galaxies to investigate the properties of this statistically sound subsample. We propose here the 4 galaxies which require the unique Chandra high resolution. We expect to detect point sources down to LX>5e38 erg/s, and a total of about 15-20 ULXs. The non-detection of X-ray sources would imply that the galaxies already observed are different from the rest of the population.
- Publication:
-
Chandra Proposal
- Pub Date:
- September 2012
- Bibcode:
- 2012cxo..prop.3620W