Note: this is an archived version which has been superseded.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

G69.0+2.7     CTB 80

• Right Ascension: 19 53 20
• Declination: +32 55
• Size (/arcmin): 80?
• Type: ?
• Flux density at 1 GHz (/Jy): 120?
• Spectral Index: varies

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.

Distance: HI observations suggest 1.5 kpc.

References:

• Angerhofer et al. 1981, A&A, 94, 313. WSRT at 610 MHz (56''×103'') 1.4 GHz (24''×44'') and 5 GHz (7''×13''), plus optical. ADS
• Becker et al. 1982, ApJ, 255, 557. X-ray observations. ADS
• Sofue et al. 1983, PASJ, 35, 437. NRO 45-m at 10.2 GHz (2'.7). ADS
• Velusamy & Kundu 1983, JApA, 4, 253. VLA of compact sources. ADS
• Blair et al. 1984, ApJ, 282, 161. Optical images and spectra. ADS
• Wang & Seward 1984, ApJ, 285, 607. Einstein observations. ADS
• Strom et al. 1984, A&A, 139, 43. Radio observations of flat spectrum component, VLA 5 GHz (1".7) and 1.4 GHz. ADS
• Mantovani et al. 1985, A&A, 145, 50. Bologna at 408 MHz (2'.6×4'.9: S=67.5±10.5 Jy), Effelsberg 100-m at 1.41 (9': S=62±9 Jy), 1.72 (7'.6: S=66±5 Jy), 2.7 (4'.5: S=52±4 Jy) and 4.75 GHz (2'.4: S=44±3.3 Jy), plus review of flux densities. ADS
• Kulkarni et al. 1988, Nature, 331, 50. Pulsar detection. ADS
• Angelini et al. 1988, ApJ, 330, L43. EXOSAT spectra. ADS
• Fesen et al. 1988, Nature, 334, 229. IRAS of surrounding shell. ADS
• Junkes et al. 1988, LNP, 316, 134. Effelsberg 100-m at 2.7 GHz (4'.3), including polarisation. ADS
• Whitehead et al. 1989, MNRAS, 237, 1109. Optical of core. ADS
• Salter et al. 1989, ApJ, 338, 171. NRAO 12-m at 84.2 GHz of core, plus review of flux densities. ADS
• Hester & Kulkarni 1989, ApJ, 340, 362. Optical imaging and spectroscopy. ADS
• Koo et al. 1990, ApJ, 364, 178. Large, expanding HI shell. ADS
• Greidanus & Strom 1990, A&A, 240, 376. Optical kinematics of core. ADS
• Koo et al. 1993, ApJ, 417, 196. VLA at 1.4 GHz of surrounding HI (1'), plus IRAS. ADS
• Safi-Harb et al. 1995, ApJ, 439, 722. ROSAT observations. ADS
• Srinivasan 1997, ApJ, 489, 170. γ-ray observations of pulsar. ADS
• Mavromatakis et al. 2001, A&A, 371, 300. Optical observations. ADS
• Butler et al. 2002, A&A, 395, 845. HST detection of pulsar. ADS
• Migliazzo et al. 2002, ApJ, 567, L141. Pulsar proper motion study. ADS
• Castelletti et al. 2003, AJ, 126, 2114. GMRT at 240 and 618 MHz (26''×17'' and 10''×6'') and VLA at 324 and 1380 MHz (73''×63'' and 93''×78''). ADS
• Moon et al. 2004, ApJ, 610, L33. Chandra and HST observations of core. ADS
• Li et al. 2005, ApJ, 628, 931. Chandra observations of pulsar and surroundings. ADS
• Golden et al. 2005, ApJ, 635, L153. High resolution radio observations of pulsar and surroundings. ADS
• Kothes et al. 2006, A&A, 457, 1081. CGPS at 408 MHz (~3': S=72±7 Jy) and 1420 MHz (~1': S=56±5 Jy), including polarisation and review of flux densities. ADS
• Kang & Koo 2007, ApJS, 173, 85. SGPS of high velocity HI. ADS
• Albert et al. 2007, ApJ, 669, 1143. γ-ray observations. ADS
• Zeiger et al. 2008, ApJ, 674, 271. Proper motion of pulsar. ADS
• Gao et al. 2011, A&A, 529, A159. Urumqi 25-m at 5 GHz (9'.5: S=36±4 Jy), including polarisation and review of flux densities. ADS
• Leahy & Ranasinghe 2012, MNRAS, 423, 718. CGPS at 1.4 GHz, including HI, plus ROSAT observations. ADS
• Park et al. 2013, ApJ, 777, 14. Arecibo of HI in region. ADS

Last updated: 30 May 2014