Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.8703l&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #87.03; Bulletin of the American Astronomical Society, V
Astronomy and Astrophysics
Astronomy
Scientific paper
We are obtaining deep 200 ksec X-ray images of seven fields covering the central regions of M33, using the ACIS-I instrument on the Chandra X-ray Observatory. The survey region includes most of the nearly one hundred supernova remnants (SNRs) that have been identified previously by a combination of optical and radio imaging and spectroscopy. A substantial fraction of these SNRs have been detected as X-ray sources for the first time. Here we discuss the identification of SNRs in the X-ray survey. We compare characteristics of the X-ray spectra of previously-identified SNRs to all of the X-ray objects that have been detected in the survey. We use these characteristics (along with the existing optical and radio data) to identify new SNRs and SNR candidates. Finally, we use both SNRs in the M33 survey and integrated spectra of LMC and Galactic SNRs to estimate the total number of SNRs that are likely to be contained in the X-ray sample and to calibrate the M33 SNR survey in terms of detectability as a function of remnant type.
Blair William Patrick
ChASeM33 Team
Gaetz Terrance J.
Ghavamian Parviz
Helfand David J.
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