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), and pulsar nebula.

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. 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. Clarificaton of notation of this region and review previous observations. 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
• 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
• Strom et al. 1995, Nature, 373, 590. Radio of X-ray extensions. ADS
• Markwardt & Ögelman 1995, Nature, 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'), including polarisation, of Vela X. ADS
• Danks & Sembach 1995, AJ, 109, 2627. Optical spectroscopy of background stars. ADS
• Blair et al. 1995, AJ, 110, 312. UV spectroscopy. ADS
• Duncan et al. 1996, MNRAS, 280, 252. Parkes 64-m at 2.4 GHz (8'.9). 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. γ-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 γ-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
   also see: Alvarez et al. 2001, A&A, 379, 323. Erratum. ADS
• Caraveo et al. 2001, ApJ, 561, 930. HST parallax observations of pulsar. ADS
• Moriguchi et al. 2001, PASJ, 53, 1025. CO observations. ADS
• Dodson et al. 2003, MNRAS, 343, 116. ATCA at 1.4, 2.4, 5.2 and 8.5 GHz (6".2×8".1, 26''×36'', 12".1×10".5 and 11".2×10".6) of pulsar nebula. ADS
• Sankrit et al. 2003, ApJ, 589, 242. Optical nebulosity to NE of G266.2−1.2. ADS
• Nichols & Slavin 2004, ApJ, 610, 285. UV absorption toward background sources. ADS
• Hales et al. 2004, ApJ, 613, 977. Vela X at 31 GHz (4'.1). ADS
• Mongano et al. 2005, A&A, 436, 917. XMM and other X-ray observations of pulsar nebula. ADS
• Miceli et al. 2005, A&A, 442, 513. XMM observations of N rim. ADS
• Katsuda & Tsunemi 2005, PASJ, 57, 621. XMM observations of E. ADS
• Aharonian et al. 2006, A&A, 448, L43. γ-ray observations. ADS
• McConnell et al. 2006, AJ, 131, 648. ATCA at 4.9 GHz (12') including polarisation. ADS
• Katsuda & Tsunemi 2006, ApJ, 642, 917. XMM observations of NE. ADS
• Nishikida et al. 2006, ApJ, 644, L171. Far UV observations. ADS
• Miceli et al. 2008, ApJ, 676, 1064. XMM observations. ADS
• LaMassa et al. 2008, ApJ, 689, L121. XMM observations of Vela X. ADS
• Grondin et al. 2013, ApJ, 774, 110. Fermi observations of Vela X. ADS

Last updated: 23 May 2014