The X-Ray Population of the Colliding Galaxy Pair Arp 81
Abstract
We propose a 55 ksec ACIS-S observation of the colliding galaxy pair Arp 81 (NGC 6621 & 6622). This collisional pair is 100 Myr past a nearly grazing collision, and has a very large star formation rate (`SFR') of more than 20 Msun/year - mostly surrounding the nucleus of NGC 6621 and in a huge star forming region in between the two galactic nuclei. The galaxy pair hosts one of the richest collections of resolvable luminous super-star clusters (200 - an order of magnitude larger than in the Antennae). The requested exposure time will allow us to explore all the ULXs in this pair and establish the correlation between their location and the local star formation rate image. It will also give us the opportunity to check the correlation between the 200 super-star clusters and the ULXs.
- Publication:
-
Chandra Proposal
- Pub Date:
- September 2015
- Bibcode:
- 2015cxo..prop.4663R