Note: this is an archived version which has been superseded.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

G263.9-3.3 Vela (XYZ)

• Right Ascension: 08 34 00
• Declination: -45 50
• Size (/arcmin): 255
• Type: C
• Flux density at 1 GHz (/Jy): 1750
• Spectral Index: varies

Notes: This refers to the whole Vela XYZ complex, of which X has at times been classified as a separate (filled-centre) remnant. This remnant is overlapped by G260.4-3.4 and G266.2-1.2.

Radio: Large shell, with flatter spectrum component (Vela X).

Optical: Filaments.

X-ray: Patchy shell, with extensions, central nebula and pulsar.

Point sources: Pulsar within Vela X, with one-sided `jet'.

Distance: Vela pulsar implies 0.5 kpc, optical spectra and HI studies suggest 0.25 kpc.

References:

• Milne 1968, AuJPh, 21, 201. Parkes 64-m at various frequencies, including 408 MHz (48': S=2300±300 Jy), 635 MHz (31': S=2360±300 Jy), 1410 MHz (14': S=1640±300 Jy) and 2650 MHz (7'.5: S=1400±250 Jy), plus discussion of the distance.
• van den Bergh et al. 1973, ApJS, 26, 19. Optical.
• Dopita et al. 1977, ApJ, 214, 179. Optical spectroscopy. ADS
• Hearn et al. 1980, ApJ, 235, L67. X-ray map. ADS
• Milne 1980, A&A, 81, 293. Maps of Vela X with Parkes 64-m at 1.66, 2.7 and 5 GHz (12', 8'.4 and 4'.4). ADS
• Weiler & Panagia 1980, A&A, 90, 269. Clarify notation of this region and review previous observations. ADS
• Kahn et al. 1985, ApJ, 299, 821. IPC observations. ADS
• Harnden et al. 1985, ApJ, 299, 828. IPC and HRI observations of Vela X and pulsar. ADS
• Bignami & Caraveo 1988, ApJ, 325, L5. Pulsar proper motion from optical observations. ADS
• Dwarakanath 1991, JApA, 12, 199. Gauribidanur `T' array at 34.5 MHz (26'×84': S=1800 Jy for Vela X and S=3900 Jy for Vela YZ), plus review of flux densities. ADS
• Bietenholz et al. 1991, ApJ, 376, L41. VLA at 5 GHz in vicinity of pulsar. ADS
• Raymond et al. 1991, ApJ, 383, 226. UV spectroscopy. ADS
• Willmore et al. 1992, MNRAS, 254, 139. Hard X-ray observations. ADS
• Dubner et al. 1992, A&AS, 96, 505. Argentine 30-m at 1.4 GHz (30') of surrounding HI. ADS
• Oberlack et al. 1994, ApJS, 92, 433. gamma-ray observations. ADS
• Bocchino et al. 1994, ApJ, 437, 209. ROSAT observations of NE. ADS
• Aschenbach et al. 1995, Natur, 373, 587. ROSAT of X-ray extensions. ADS
• Strom et al. 1995, Natur, 373, 590. Radio of X-ray extensions. ADS
• Markwardt & Ögelman 1995, Natur, 375, 40. X-ray jet from pulsar. ADS
• Jenkins & Wallerstein 1995, ApJ, 440, 227. Optical absorption of associated neutral carbon cloud. ADS
• Milne 1995, MNRAS, 277, 1435. Parkes 64-m at 8.4 GHz (3'), inlcuding polarization, of Vela X. ADS
• Duncan et al. 1996, MNRAS, 280, 252. Parkes 64-m at 2.4 GHz (8'.9). ADS
• Danks & Sembach 1995, AJ, 109, 2627. Optical spectroscopy of background stars. ADS
• de Jager et al. 1996, ApJ, 460, 729. gamma-ray detection. ADS
• Blair et al. 1995, AJ, 110, 312. UV spectroscopy. ADS
• Whiteoak & Green 1996, A&AS, 118, 329. MOST at 843 MHz (43"×62") of part. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m and ATCA OH observations. ADS
• Frail et al. 1997, ApJ, 475, 224. VLA at 330 MHz (1'×1'.8) and comparison with ROSAT observations of Vela X. ADS
• Markwardt & Ögelman 1997, ApJ, 480, L13. ASCA observations of pulsar `jet'. ADS
• Raymond et al. 1997, ApJ, 482, 881. UV spectroscopy. ADS
• Yoshikoshi et al. 1997, ApJ, 487, L65. gamma-ray observations of pulsar. ADS
• Jenkins et al. 1998, ApJ, 492, L147. UV absorption to background star. ADS
• Dubner et al. 1998, AJ, 116, 813. Parkes 64-m at 1.4 GHz (15') for HI studies. ADS
• Bock et al. 1998, AJ, 116, 1886. MOST at 843 MHz (43"×60"). ADS
• Cha et al. 1999, ApJ, 515, L25. Optical spectra, for distance. ADS

Last updated: 3 Aug 2000