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


G45.7−0.4

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

References:

Last updated: 13 May 2017


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: 24 May 2014


G49.2−0.7

(W51)

Notes: Has erroneously been called G49.1−0.1.

Radio: In complex region, parameters uncertain.
Optical: Some diffuse emission possibly associated.
X-ray: Elongated east–west.
Distance: Association with CO gives 6 kpc. HI suggest 4.3 kpc.

References:

Last updated: 13 May 2017


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: Association with HI gives 2.8 kpc.

References:

Last updated: 11 May 2017


G54.1+0.3

Radio: Filled-centre core, with faint diffuse emission.
X-ray: Centrally concentrated, with more extended diffuse emission.
Point sources: Central pulsar.
Distance: HI absorption suggests 4.5–9 kpc, association with CO suggest 8.2 kpc.

References:

Last updated: 23 May 2014


G54.4−0.3

(HC40)

Notes: Has been called G54.5−0.3.

Radio: Shell, in complex region.
Optical: Faint filaments.

References:

Last updated: 11 May 2017


G55.0+0.3

Notes: Has been called G55.2+0.5.

Radio: Faint, partial shell.
Point sources: Old pulsar nearby.
Distance: Association with HI features implies 14 kpc.

References:

Last updated: 16 Mar 2009


G55.7+3.4

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

References:

Last updated: 24 May 2014


G57.2+0.8

(4C21.53)

Radio: Extended non-thermal arc.
Point sources: Central magnetar.

References:

Last updated: 13 May 2017


G59.5+0.1

Notes: Has been called G59.6+0.1.

Radio: Incomplete shell.
Optical: Diffuse shell.

References:

Last updated: 25 Apr 2014


G59.8+1.2

Notes: Has been called G59.7+1.2.

Radio: Poorly defined source.
Optical: Faint diffuse emission and filaments.

References:

Last updated: 24 May 2014


G63.7+1.1

Radio: Centrally brightened, with core.
X-ray: Diffuse emission.

References:

Last updated: 13 May 2017


G64.5+0.9

Radio: Shell with central source.

References:

Last updated: 30 Apr 2014


G65.1+0.6

Radio: Large, faint shell.
Point sources: Old pulsar nearby.
Distance: Possible association with HI suggests 9 kpc.

References:

Last updated: 11 May 2017


G65.3+5.7

Notes: Has been called G65.2+5.7.

Radio: Large, faint ring, near S91 and S94.
Optical: Filamentary ring.
X-ray: Diffuse, centrally brightened.
Distance: Optical proper motions and velocities indicates 0.8 kpc.

References:

Last updated: 28 Apr 2014


G65.7+1.2

DA 495

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

Radio: Centrally brightened with thick shell?
X-ray: Centrally brightened.
Point sources: Compact X-ray source near centre.
Distance: HI polarisation observations suggest 1.5 kpc.

References:

Last updated: 11 May 2017


G65.8−0.5

Radio: Arc in W.
Optical: Diffuse shell, brighter in W.

References:

Last updated: 30 Apr 2014


G66.0−0.0

Radio: Some emission in N.
Optical: Incomplete shell.

References:

Last updated: 30 Apr 2014


G67.6+0.9

Radio: Arc in S.
Optical: Filamentary shell.

References:

Last updated: 30 Apr 2014


G67.7+1.8

Radio: Double arc shell.
Optical: Filaments in N.
X-ray: Detected.
Point sources: Compact X-ray source.

References:

Last updated: 24 May 2014


G67.8+0.5

Radio: Poorly resolved arc.
Optical: Diffuse shell, brighter to W.

References:

Last updated: 30 Apr 2014


G68.6−1.2

Radio: Faint, poorly defined source.

References:

Last updated: 24 May 2014


G69.0+2.7

CTB 80

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

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.
Distance: HI observations suggest 1.5 kpc.

References:

Last updated: 13 May 2017


G69.7+1.0

Radio: Poorly resolved source.
X-ray: Detected.

References:

Last updated: 28 Apr 2014


G70.0−21.5

Optical: Large, faint shell of filaments.
X-ray: Partially detected.

References:

Last updated: 11 Jun 2017


G73.9+0.9

Radio: Diffuse, centrally brightened to SW.
Optical: Faint shell.

References:

Last updated: 13 May 2017


G74.0−8.5

Cygnus Loop

Notes: Has been suggested that this is two overlapping remnants.

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, plus X-ray sources in S.
Distance: Optical proper motion and shock velocity gives 0.44 kpc.

References:

Last updated: 16 Jun 2017


G74.9+1.2

CTB 87

Radio: Filled-centre, with high polarisation and high frequency turnover.
X-ray: Centrally brightened.
Point sources: Compact X-ray source in SE.
Distance: HI absorption indicates 12 kpc, optical extinction gives 6.1 kpc.

References:

Last updated: 13 May 2017


G76.9+1.0

Radio: Bipolar shell.
Point sources: Central pulsar.

References:

Last updated: 24 May 2014


G78.2+2.1

DR4, γ Cygni SNR

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.
Point sources: X-ray pulsar at edge of remnant, with nebula.
Distance: Associations with other objects suggests 1.7 to 2.6 kpc.

References:

Last updated: 13 May 2017


G82.2+5.3

W63

Notes: Has been called G82.5+5.3.

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

References:

Last updated: 28 Apr 2014


G83.0−0.3

Radio: Incomplete shell.

References:

Last updated: 16 Mar 2009


G84.2−0.8

Radio: Elongated shell, with a filament aligned with the major axis.
X-ray: Detected.
Distance: HI absorption suggests 6 kpc.

References:

Last updated: 28 Apr 2014


G85.4+0.7

Radio: Faint, incomplete shell, within larger thermal shell.
X-ray: Centrally brightened.
Distance: HI observations suggest 3.5 kpc.

References:

Last updated: 28 Apr 2014


G85.9−0.6

Radio: Faint, incomplete shell.
Optical: Diffuse shell.
X-ray: Centrally brightened.
Distance: HI observations suggest 4.8 kpc.

References:

Last updated: 28 Apr 2014


G89.0+4.7

HB21

Radio: Distorted shell (4C50.52, an extragalactic double, is within the boundary of the remnant).
Optical: Filaments and patches.
X-ray: Centrally brightened.
Distance: Various associations imply 0.8 kpc.

References:

Last updated: 13 May 2017


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