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V382 Velorum, also known as Nova Velorum 1999, was a bright nova which occurred in 1999 in the southern constellation Vela. V382 Velorum reached a brightness of 2.6 magnitude, making it easily visible to the naked eye. It was discovered by Peter Williams of Heathcote, New South Wales, Australia at 09:30 UT on 22 May 1999. Later that same day it was discovered independently at 10:49 UT by Alan C. Gilmore at Mount John University Observatory in New Zealand.[4][5]

V382 Velorum

Location of V382 Velorum (circled in red)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Vela
Right ascension 10h 44m 48.3978s[1]
Declination −52° 25′ 31.1686″[1]
Apparent magnitude (V) 2.8 Max.
16.6 Min.[2]
Characteristics
Variable type Nova[2]
Astrometry
Proper motion (μ) RA: −11.885±0.083[1] mas/yr
Dec.: 2.690±0.079[1] mas/yr
Parallax (π)0.5599 ± 0.0547 mas[1]
Distance1800+243
−133[2] pc
Other designations
Nova Vel 1999, AAVSO 1040-51, Gaia DR2 5354475121660180096[3][2]
Database references
SIMBADdata
The light curve of V382 Velorum, plotted from AAVSO data
The light curve of V382 Velorum, plotted from AAVSO data

In its quiescent state, V382 Velorum has a mean visual magnitude of 16.56.[6] It is classified as a fast nova with a smooth light curve.[7][8]

Like all novae, V382 Velorum is a binary system with two stars orbiting so close to each other that one star, the "donor" star, transfers matter to its companion star which is a white dwarf. The orbital period is 3.5 hours.[9] The white dwarf in this system has a mass of 1.23M⊙.[10] V382 Velorum is a neon nova, a relatively rare type of nova with a O-Ne-Mg white dwarf, rather than the more common C-O white dwarf.[11]

The stars forming V382 Velorum are surrounded by a small emission nebula about 10 arc seconds in diameter.[12]


References


  1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. Schaefer, Bradley E. (2018). "The distances to Novae as seen by Gaia". Monthly Notices of the Royal Astronomical Society. 481 (3): 3033–3051. arXiv:1809.00180. Bibcode:2018MNRAS.481.3033S. doi:10.1093/mnras/sty2388. S2CID 118925493.
  3. "V382 Velorum". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-08-26.
  4. Shore, SN, et al., in The Astronomical Journal, vol. 125, pp. 1507-1518, March 2003
  5. Williams, P.; Lee, S.; Pearce, A.; Gilmore, A.C.; Pollard, K.R.; McSaveney, J.A.; Kilmartin, P.M.; Caldwell, P. (May 1999). "Nova Velorum 1999". IAU Circular. 7176: 1. Bibcode:1999IAUC.7176....1L. Retrieved 7 December 2020.
  6. Platais, Imants; Girard, Terrence M.; Kozhurina-Platais, Vera; Vanaltena, William F.; Jain, Raj K.; Lopez, Carlos E. (February 2000). "Nova Velorum 1999=V382 Vel: Astrometry and Photometry". Publications of the Astronomical Society of the Pacific. 112 (768): 224–227. doi:10.1086/316505. Retrieved 7 December 2020.
  7. Dellavalle, M.; Pasquini, L.; Daou, D.; Williams, R.E. (July 2002). "The evolution of Nova V382 Velorum 1999" (PDF). Astronomy & Astrophysics. 390: 155–166. arXiv:astro-ph/0205135. doi:10.1051/0004-6361:20020611. Retrieved 7 December 2020.
  8. Strope, Richard J.; Schaefer, Bradley E.; Henden, Arne A. (July 2010). "Catalog of 93 Nova Light Curves: Classification and Properties". The Astronomical Journal. 140 (1): 34–62. arXiv:1004.3698. doi:10.1088/0004-6256/140/1/34. Retrieved 7 December 2020.
  9. Balman, Solen; Retter, Alon; Bos, Marc (May 2006). "The Detection of a 3.5 hr Period in the Classical Nova Velorum 1999 (V382 Vel) and the Long-Term Behavior of the Nova Light Curve". The Astronomical Journal. 131 (5): 2628–2633. arXiv:astro-ph/0601713. doi:10.1086/503161. S2CID 18321996. Retrieved 7 December 2020.
  10. Hachisu, Izumi; Kato, Mariko (June 2019). "A Light-curve Analysis of 32 Recent Galactic Novae: Distances and White Dwarf Masses". The Astrophysical Journal Supplement Series. 242 (2): 18. arXiv:1905.10655. doi:10.3847/1538-4365/ab1b43. S2CID 166228785. Retrieved 7 December 2020.
  11. Hachisu, Izumi; Kato, Mariko (1 January 2016). "Light-curve Analysis of Neon Novae". The Astrophysical Journal. 816 (1): 26. arXiv:1511.06819. doi:10.3847/0004-637X/816/1/26. S2CID 118690985. Retrieved 7 December 2020.
  12. Takeda, Larissa; Marcos, Diaz (May 2019). "Imaging and Analysis of Neon Nova V382 Vel Shell". Publications of the Astronomical Society of the Pacific. 131 (999): 054205. arXiv:1909.02051. doi:10.1088/1538-3873/ab0a47. Retrieved 7 December 2020.



На других языках

[de] V382 Velorum

V382 Velorum war eine helle Nova, die am 22. Mai 1999 im Sternbild Vela mit einer visuellen Stärke von 2,5m entdeckt wurde. Dies war die hellste Nova am südlichen Himmel seit Nova Puppis 1942.
- [en] V382 Velorum


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