Note: this is an archived version which has been superseded.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

1st quadrant Galactic SNRs (45°<l<90°)


G45.7-0.4

Radio: Shell, brightest to the SE, poorly defined to NW.

References:

Last updated: 20th May 1992


G46.8-0.3 (HC30)

Notes: Has been called G46.6-0.2.

Radio: Shell, two bright arcs to NNW and SSE.
Distance: HI absorption suggests 6.8--8.8 kpc.

References:

Last updated: 20 AUG 1996


G49.2-0.7 (W51)

Radio: In complex region, parameters uncertain.
X-ray: Elongated east--west.
Distance: HI absorption suggests 4.1 kpc.

References:

Last updated: 20 AUG 1996


G53.6-2.2 3C400.2, NRAO 611

Notes: Has been called G53.7-2.2.

Radio: Ring of emission, with extension to NW.
Optical: Filaments and diffuse emission.
X-ray: Centrally brightened, offset to NW.
Distance: Mean optical velocity indicates 6.7 kpc.

References:

Last updated: 30 JUN 1995


G54.1+0.3

Radio: Filled-centre.
X-ray: Detected.

References:

Last updated: 13th June 1990


G54.4-0.3 (HC40)

Notes: Has been called G54.5-0.3.

Radio: Shell, in complex region.

References:

Last updated: 23 FEB 1993


G55.7+3.4

Radio: Incomplete shell.
Point sources: Old pulsar within the boundary of the remnant.

References:

Last updated: 05 APR 1993


G57.2+0.8 (4C21.53)

Radio: Extended non-thermal arc.
Point sources: Near the millisecond pulsar, but not thought to be related.

References:

Last updated: 1st March 1988


G59.5+0.1

Radio: Incomplete shell.

References:

Last updated: 19th May 1992


G59.8+1.2

Notes: Has been called G59.7+1.2.

Radio: Poorly defined source.

References:

Last updated: 28 JUN 1995


G65.1+0.6

Radio: Large, faint shell.

References:

Last updated: 14th January 1991


G65.3+5.7

Notes: Has been called G65.2+5.7.

Radio: Large, faint ring? near S91 and S94.
Optical: Strong in Halpha+[NII] and [OIII].
X-ray: Detected.
Distance: Mean optical velocity suggests 0.8 kpc.

References:

Last updated: 10 MAY 1993


G65.7+1.2 DA 495

Notes: Has mistakenly been called G55.7+1.2.

Radio: Filled-centre or thick shell?

References:

Last updated: 13th June 1990


G67.7+1.8

Radio: Double arc shell.

References:

Last updated: 19th May 1992


G68.6-1.2

Radio: Faint, poorly defined source.

References:

Last updated: 28 JUN 1995


G69.0+2.7 CTB 80

Notes: An association with a SN in AD1408 has been suggested. Has been called G68.8+2.8. Is it a SNR?

Radio: Compact core, flat spectrum plateau, and steeper spectrum extensions, with spectral break?
Optical: Expanding nebulosity near centre, with filaments to the SW and far NE.
X-ray: Diffuse emission with compact source.
Point sources: Pulsar at western edge of core.

References:

Last updated: 30 JUN 1995


G69.7+1.0

Radio: Poorly resolved source.

References:

Last updated: 28 JUN 1995


G73.9+0.9

Radio: Incomplete, clumpy shell.
Optical: Weak shell.

References:

Last updated: 26 AUG 1996


G74.0-8.5 Cygnus Loop

Radio: Shell, brightest to the NE, with fainter breakout region to S, with spectral variations.
Optical: Large filamentary loop, brightest to the NE, not well defined to the S or W.
X-ray: Shell in soft X-rays.
Point sources: Several compact radio sources within the boundary of the remnant, including CL4.

References:

Last updated: 31 JUL 1995


G74.9+1.2 CTB 87

Radio: Filled-centre, with high polarization and high frequency turnover.
X-ray: Centrally brightened.
Distance: HI absorption indicates 12 kpc.
Point sources: Extragalactic compact source is nearby.

References:

Last updated: 01 JUL 1995


G76.9+1.0

Radio: Diffuse, non-thermal.

References:

Last updated: 30 JUN 1995


G78.2+2.1 DR4, gamma Cygni

Notes: Has been called G78.1+1.8.

Radio: In complex region (early catalogues refer to other proposed remnants in this region).
Optical: Faint filaments, spectra indicate a SNR superposed on a HII region.
X-ray: Weak emission from the SE of the remnant.

References:

Last updated: 20 AUG 1996


G82.2+5.3 W63

Radio: Shell in the Cygnus X complex.
Optical: In complex region, but spectra indicate SNR filaments.
X-ray: Detected.

References:

Last updated: 23 FEB 1993


G84.2-0.8

Radio: Elongated shell, with a filament aligned with the major axis.

References:

Last updated: 01 JUL 1995


G84.9+0.5

Radio: Incomplete shell.

References:

Last updated: 19th May 1992


G89.0+4.7 HB21

Radio: Distorted shell (4C50.52, an extragalactic double, is within the boundary of the remnant).
Optical: Filaments possibly associated.
X-ray: Detected from incomplete mapping.

References:

Last updated: 19th May 1992


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