Note: this is an archived version which has been superseded. The current SNR catalogue is at http://www.mrao.cam.ac.uk/surveys/snrs/

4th quadrant Galactic SNRs (315°<l<360°)


G315.4-2.3 RCW 86, MSH 14-63

Notes: Possibly the remnant of the SN of AD185?

Radio: Shell, brightest to the SW.
Optical: Bright, radiative filaments, with some faint Balmer dominated filaments.
X-ray: Partial shell and bright patch.
Distance: Possible association with OB stars suggests 2.5 kpc.

References:

Last updated: 17 Oct 2001


G315.4-0.3

Radio: Irregular non-thermal emission, with HII region superposed in E.

References:

Last updated: 20 Aug 1996


G315.9-0.0

Notes: Has been called G315.8-0.0.

Radio: Faint, distorted shell, with steep-spectrum `jet'?

References:

Last updated: 14 Aug 1998


G316.3-0.0 (MSH 14-57)

Radio: Distorted shell, with possible `blowout'.
X-ray: Detected.
Distance: HI absorption data suggests >7.2 kpc.

References:

Last updated: 10 Oct 2001


G317.3-0.2

Radio: Incomplete shell.

References:

Last updated: 21 Aug 1996


G318.2+0.1

Radio: Faint shell, with central HII region.
X-ray: Sources within remnant.

References:

Last updated: 10 Oct 2001


G318.9+0.4

Notes: May not be a SNR?

Radio: Complex arcs, with off-centre core.

References:

Last updated: 13 Aug 1998


G320.4-1.2 MSH 15-52, RCW 89

Notes: Has been suggested as the remnant of the SN of AD185?

Radio: Ragged shell.
Optical: RCW 89 is the Halpha emitting region to the NW.
X-ray: Partial shell, central nebula and pulsar and possible `jet'.
Point sources: Radio and X-ray pulsar, plus IR compact source.
Distance: HI absorption indicates 5.2 kpc.

References:

Last updated: 17 Oct 2001


G320.6-1.6

Radio: Faint shell, overlapping G320.4-1.2 in W.

References:

Last updated: 19 Aug 1998


G321.9-1.1

Radio: Faint shell.

References:

Last updated: 13 Aug 1998


G321.9-0.3

Radio: Shell brighter to the W, with Cir X-1 to N.
Point sources: Compact, probably thermal source at S edge.

References:

Last updated: 19 Aug 1998


G322.5-0.1

Radio: Shell with central extended source.
Point sources: PN Pe 2-8 within boundary.

References:

Last updated: 13 Aug 1998


G323.5+0.1

Radio: Distorted shell, confused with thermal emission.
Point sources: Compact, probably thermal source near centre.

References:

Last updated: 13 Aug 1998


G326.3-1.8 MSH 15-56

Notes: Has been called G326.2-1.7.

Radio: Shell, with elongated, flat-spectrum core.
Optical: Emission around the shell.
X-ray: Shell, with central extended emission.

References:

Last updated: 10 Oct 2001


G327.1-1.1

Radio: Shell, with off-centre core.
X-ray: Diffuse, with core.

References:

Last updated: 2 Aug 2000


G327.4+0.4 Kes 27

Notes: Has been called G327.3+0.4 and G327.3+0.5.

Radio: Incomplete, multi-arc shell, brightest to the SE.
X-ray: Diffuse, best defined to E.
Distance: HI absroption indicates 4.3 to 5.4 kpc.

References:

Last updated: 10 Oct 2001


G327.4+1.0

Radio: Asymmetric shell.

References:

Last updated: 10 Oct 2001


G327.6+14.6 SN1006, PKS 1459-41

Notes: This is the remnant of the SN of AD1006.

Radio: Shell, with two bright arcs.
Optical: Filaments to the NW, with broad Halpha component.
X-ray: Thermal shell, with non-thermal limb-brightened arcs.
Point sources: The background Schweizer-Middleditch star is near the middle of the remnant.
Distance: Optical spectra and proper motion indicate 1.7-3.1 kpc, modelling spectra gives 1.8±0.3 kpc.

References:

Last updated: 17 Oct 2001


G328.4+0.2 (MSH 15-57)

Radio: Amorphous emission, with central bar.
X-ray: Detected at high energies.
Distance: HI absorption indicates at least 17.4±0.9 kpc.

References:

Last updated: 10 Oct 2001


G329.7+0.4

Radio: Diffuse shell, in complex region.

References:

Last updated: 10 Oct 2001


G330.0+15.0 Lupus Loop

Radio: Low surface brightness loop with HI shell.
X-ray: Detected.

References:

Last updated: 28 Jun 1995


G330.2+1.0

Radio: Clumpy non-thermal emission, possibly a distorted shell.
Distance: HI absorption indicates at least 4.9 kpc.

References:

Last updated: 10 Oct 2001


G332.0+0.2

Radio: Incomplete shell.

References:

Last updated: 17 Oct 2001


G332.4-0.4 RCW 103

Radio: Shell, brightest to the S.
Optical: Filaments correspond well to the radio shell.
X-ray: Detected, with point source near centre.
Point sources: Central, variable X-ray source, and nearby pulsar.
Distance: HI absorption indicates 3.3 kpc.

References:

Last updated: 1 Aug 2000


G332.4+0.1 MSH 16-51, Kes 32

Notes: Has been called G332.4+0.2.

Radio: Distorted shell, with thermal jet and plume adjacent.
Point sources: Pulsar nearby.

References:

Last updated: 1 Aug 2000


G335.2+0.1

Radio: Well defined shell.
Point sources: Old pulsar within remnant boundary.

References:

Last updated: 13 Aug 1998


G336.7+0.5

Radio: Irregular shell.

References:

Last updated: 13 Aug 1998


G337.0-0.1 (CTB 33)

Notes: This entry refers to a small (1'.5) SNR, not the larger previously catalogued G337.0-0.1.

Radio: Shell, in a complex region.
Distance: Assocition with CTB 33 gives 11 kpc.
Point sources: Associated with a soft gamma repeater.

References:

Last updated: 17 Oct 2001


G337.2-0.7

Radio: Shell, not well resolved.
X-ray: Extended emission.

References:

Last updated: 10 Oct 2001


G337.3+1.0 Kes 40

Radio: Nearly complete shell.

References:

Last updated: 13 Aug 1998


G337.8-0.1 Kes 41

Radio: Distorted shell.
Distance: HI absorption suggests >9.3 kpc.

References:

Last updated: 1 Aug 2000


G338.1+0.4

Radio: Arc in NE, merging with thermal emission in S.
Optical: Detected.
X-ray: Detected.

References:

Last updated: 10 Oct 2001


G338.3-0.0

Radio: Irregular shell, in complex region.

References:

Last updated: 13 Aug 1998


G338.5+0.1

Radio: Circle of non-thermal emission in complex region, not well defined.

References:

Last updated: 13 Aug 1998


G340.4+0.4

Radio: Distorted shell, elongated east-west.

References:

Last updated: 13 Aug 1998


G340.6+0.3

Radio: Incomplete shell.
Optical: Possible associated filaments.

References:

Last updated: 1 Aug 2000


G341.2+0.9

Radio: Incomplete shell, with extension to SW.
Point sources: Pulsar in W, with wind nebula.

References:

Last updated: 8 Nov 2001


G341.9-0.3

Radio: Incomplete shell, brightest to NE.

References:

Last updated: 1 Aug 2000


G342.0-0.2

Radio: Distorted shell.

References:

Last updated: 1 Aug 2000


G342.1+0.9

Radio: Incomplete shell.

References:

Last updated: 13 Aug 1998


G343.0-6.0

Radio: Faint, poorly defined.
Optical: Filamentary shell.

References:

Last updated: 17 Oct 2001


G343.1-2.3

Radio: Incomplete shell?
Point sources: Pulsar near edge, with wind nebula.

References:

Last updated: 8 Nov 2001


G343.1-0.7

Radio: Shell, with smaller thermal shell adjacent.

References:

Last updated: 1 Aug 2000


G344.7-0.1

Radio: Aysmmetric shell, with possible core.
X-ray: Detected.

References:

Last updated: 10 Oct 2001


G345.7-0.2

Radio: Poorly defined diffuse shell.
Point sources: Old pulsar nearby.

References:

Last updated: 13 Aug 1998


G346.6-0.2

Radio: Irregular shell.

References:

Last updated: 1 Aug 2000


G347.3-0.5

Radio: Faint emission.
X-ray: Non-thermal, limb-brightended to W, with central source.
Distance: Association with molecular clouds, and HII region, suggests 6 kpc.

References:

Last updated: 31 Dec 2001


G348.5-0.0

Radio: Arc, overlapping G348.5+0.1.

References:

Last updated: 1 Aug 2000


G348.5+0.1 CTB 37A

Radio: Shell, poorly define to S and W, overlapping G348.5-0.0 in E.
Distance: HI absorption indicates 10.2±3.5 kpc.

References:

Last updated: 17 Oct 2001


G348.7+0.3 CTB 37B

Radio: Incomplete shell with faint eastern extensions.
Distance: HI absorption indicates 10.2±3.5 kpc.

References:

Last updated: 21 Aug 1996


G349.2-0.1

Radio: Elongated shell, adjacent to bright HII region.

References:

Last updated: 27 Aug 1996


G349.7+0.2

Radio: Incomplete clumpy shell, with enhancement to the S.
Distance: HI absorption indicates 18.3±4.6 kpc, association with CO features gives 23 kpc.

References:

Last updated: 17 Oct 2001


G350.0-2.0

Notes: Incorporates the previously catalogued G350.0-1.8 in the NW.

Radio: Shell, brightest in NW.

References:

Last updated: 13 Aug 1998


G351.2+0.1

Notes: Has been called G351.3+0.2.

Radio: Distorted shell, with possible flat-spectrum core.

References:

Last updated: 13 Aug 1998


G351.7+0.8

Radio: Elongated shell, adjacent to bright HII region.
Point sources: Pulsar nearby.

References:

Last updated: 21 Aug 1996


G351.9-0.9

Radio: Asymmetric shell.

References:

Last updated: 21 Aug 1996


G352.7-0.1

Radio: Distorted shell.
X-ray: Detected.

References:

Last updated: 10 Oct 2001


G353.9-2.0

Radio: Shell, with central double source.

References:

Last updated: 8 Nov 2001


G354.1+0.1

Notes: Is this a SNR?

Radio: Elongated N-S.
Point sources: Pulsar at S tip.

References:

Last updated: 31 Jul 1995


G354.8-0.8

Radio: Distorted shell.

References:

Last updated: 1 Aug 2000


G355.6-0.0

Radio: Well defined shell.
X-ray: Detected.

References:

Last updated: 10 Oct 2001


G355.9-2.5

Radio: Distorted shell, brightest to SE.

References:

Last updated: 13 Aug 1998


G356.2+4.5

Radio: Faint shell.

References:

Last updated: 12 Oct 2001


G356.3-0.3

Radio: Elongated shell, brighter in N.

References:

Last updated: 30 Jun 1995


G356.3-1.5

Radio: Double arc.

References:

Last updated: 30 Jun 1995


G357.7-0.1 MSH 17-39

Notes: Has been suggested that this is not a SNR.

Radio: Multiple arcs and filaments.
Point sources: Peripheral compact source (possibly a compact HII region).

References:

Last updated: 17 Oct 2001


G357.7+0.3

Radio: Non-thermal shell in complex region.

References:

Last updated: 1 Aug 2000


G358.0+3.8

Radio: Faint shell.

References:

Last updated: 12 Oct 2001


G359.0-0.9

Radio: Incomplete shell.
X-ray: Partial shell.

References:

Last updated: 1 Aug 2000


G359.1-0.5

Radio: Non-thermal shell in complex region, crossed by the `snake'.
X-ray: Centrally brightened.
Point sources: Several compact radio sources near centre, OH masers around edge.

References:

Last updated: 1 Aug 2000


G359.1+0.9

Radio: Shell, brightest in E.

References:

Last updated: 1 Aug 2000


Dave Green/MRAO, Cambridge, UK/D.A.Green@mrao.cam.ac.uk