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G263.9-3.3

Note: this is an archived version which has been superseded.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 parallax gives 0.3 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. Einstein observations. ADS
Harnden et al. 1985, ApJ, 299, 828. Einstein 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
Lu & Aschenbach 2000, A&A, 362, 1083. ROSAT spatially resolved spectroscopy. ADS
Chadwick et al. 2000, ApJ, 537, 414. Limit on high energy gamma-rays from pulsar. ADS
Sankrit et al. 2001, ApJ, 549, 416. Far-UV observations of selected region. ADS
Pavlov et al. 2001, ApJ, 554, L189. Chandra two-epoch observations of pulsar nebula. ADS
Helfand et al. 2001, ApJ, 556, 380. Chandra observations of pulsar and its nebula. ADS
Miyata et al. 2001, ApJ, 559, L45. Chandra of X-ray extension. ADS
Alvarez et al. 2001, A&A, 372, 636. Radio spectral index studies. ADS
Caraveo et al. 2001, ApJ, 561, 930. HST parallax observations of pulsar. ADS

Last updated: 26 Nov 2001

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