The Discovery of a Supernova Remnant Embedded in a Giant H II Region of M33

Details The Discovery of a Supernova Remnant Embedded in a Giant H II Region of M33 The Discovery of a Supernova Remnant Embedded in a Giant H II Region of M33

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...418..743g&link_type=abstract

Astrophysical Journal v.418, p.743

Astronomy and Astrophysics

Astronomy

24

Galaxies: Individual Messier Number: M33, Ism: H Ii Regions, Ism: Supernova Remnants, Radio Continuum: Interstellar, X-Rays: Interstellar

Scientific paper

We have combined radio, optical, and X-ray data to discover a new supernova remnant (SNR) in M33. This remnant is embedded in the giant H II region NGC 592. Our VLA-WSRT radio survey of M33 showed that NGC 592 has a nonthermal component to its radio emission. Optical images of the H II region at the KPNO 4 m allowed us to subtract the thermal source to reveal the nonthermal source. NGC 592 had also been identified in Einstein data as a soft X-ray source. Our ROSAT observation, combined with the radio and optical data, provides evidence that the X-ray source is a supernova remnant. A knot of [S II] emission was isolated in the H II region, and MMT spectra confirm that the knot has the spectrum of a supernova remnant. We use these observations to investigate the properties of the remnant and its environment. We find that this SNR is a typical middle-aged remnant except that it is expanding into dense gas of the H II region NGC 592. We also find that there is a pressure difference between the hot postshock region and the cool recombination zone. This difference may be a sign that nonthermal particles and magnetic fields provide significant pressure support in the recombination zone.

Affiliated with

Also associated with

No associations

Rating

The Discovery of a Supernova Remnant Embedded in a Giant H II Region of M33 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 Discovery of a Supernova Remnant Embedded in a Giant H II Region of M33, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Discovery of a Supernova Remnant Embedded in a Giant H II Region of M33 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-784270