Chandra ACIS Survey of M33 (ChASeM33): Supernova Remnants

Terrance Gaetz (SAO) , K.S. Long (STScI), W.P. Blair (JHU), P. Ghavamian (JHU), J.P. Hughes (Rutgers), P.F. Winkler (Middlebury College), D.J. Helfand (Columbia), R.P. Kirshner (Harvard), T. Pannuti (Morehead State), P.P. Plucinski (SAO), M. Sasaki (SAO), R. Tuellmann (SAO), and the CHASEM33 Team

In our deep Chandra X-ray survey of M33, we have obtained images of seven overlapping fields covering the central regions of M33 using the ACIS-I detector. The survey region includes most of the nearly one hundred supernova remnants (SNRs) which had been previously identified by using a combination of optical and radio imaging and spectroscopy. This survey finds ChASeM33 sources coincident (within 10 arcsec) with 31 of the 100 known supernova remnants in M33. A number of the ChASeM33 sources are spatially resolved, showing X-ray emission clearly extending beyond the size of the PSF. This includes several known SNRs and also some newly identified X-ray SNR candidates. We will report on the most interesting cases, and compare the optical and X-ray data for a number of these. Support for this work was provided by NASA through Chandra Award Number G06-7073A and contract NAS8-03060.