Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2011-04-14
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
Accepted for publication in the Astronomical Journal (42 pages, 45 figures)
Scientific paper
We report the detection of Galactic supernova remnants (SNRs) in the mid-infrared (at 24 and 70 {\mu}m), in the coordinate ranges 10 < l < 65 deg and 285 < l < 350 deg, |b| < 1 deg, using the Multiband Imaging Photometer (MIPS) aboard the Spitzer Space Telescope. We search for infrared counterparts to SNRs in Green's catalog and identify 39 out of 121, i.e., a detection rate of about 32%. Such a relatively low detection fraction is mainly due to confusion with nearby foreground/background sources and diffuse emission. The SNRs in our sample show a linear trend in [F8/F24] versus [F70/F24]. We compare their infrared fluxes with their corresponding radio flux at 1.4 GHz and find that most remnants have ratios of 70 {\mu}m to 1.4 GHz characteristic of SNRs (with the exception of a few which have ratios closer to those of H II regions). Furthermore, we retrieve a slope close to unity when correlating infrared (24 and 70 {\mu}m) with 1.4 GHz emission. Our survey is more successful in detecting remnants with bright X-ray emission, which we find is well correlated with the 24 {\mu}m morphology. Moreover, by comparing the power emitted in X-ray, infrared and radio, we conclude that the energy released in the infrared is comparable to the cooling in the X-ray range.
Carey Sean Joseph
Martin Peter G.
Noriega-Crespo Alberto
Paladini Roberta
Pinheiro Gonçalves Daniela
No associations
LandOfFree
The Mipsgal View of Supernova Remnants in the Galactic Plane does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Mipsgal View of Supernova Remnants in the Galactic Plane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Mipsgal View of Supernova Remnants in the Galactic Plane will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-167846