V382 Velorum Explained

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.[1] [2]

In its quiescent state, V382 Velorum has a mean visual magnitude of 16.56.[3] It is classified as a fast nova with a smooth light curve.[4] [5]

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.[6] The white dwarf in this system has a mass of 1.23M⊙.[7] 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.[8]

The stars forming V382 Velorum are surrounded by a small emission nebula about 10 arc seconds in diameter.[9]

External links

Notes and References

  1. http://iopscience.iop.org/1538-3881/125/3/1507/pdf/1538-3881_125_3_1507.pdf Shore, SN, et al., in The Astronomical Journal, vol. 125, pp. 1507-1518, March 2003
  2. Williams . P. . Lee . S. . Pearce . A. . Gilmore . A.C. . Pollard . K.R. . McSaveney . J.A. . Kilmartin . P.M. . Caldwell . P. . Nova Velorum 1999 . IAU Circular . May 1999 . 7176 . 1 . 1999IAUC.7176....1L . 7 December 2020.
  3. Platais . Imants . Girard . Terrence M. . Kozhurina-Platais . Vera . Vanaltena . William F. . Jain . Raj K. . Lopez . Carlos E. . Nova Velorum 1999=V382 Vel: Astrometry and Photometry . Publications of the Astronomical Society of the Pacific . February 2000 . 112 . 768 . 224–227 . 10.1086/316505 . 2000PASP..112..224P . 119706880 . free .
  4. Dellavalle . M. . Pasquini . L. . Daou . D. . Williams . R.E. . The evolution of Nova V382 Velorum 1999 . Astronomy & Astrophysics . July 2002 . 390 . 155–166 . 10.1051/0004-6361:20020611 . astro-ph/0205135 . 2002A&A...390..155D . 7 December 2020. free .
  5. Strope . Richard J. . Schaefer . Bradley E. . Henden . Arne A. . Catalog of 93 Nova Light Curves: Classification and Properties . The Astronomical Journal . July 2010 . 140 . 1 . 34–62 . 10.1088/0004-6256/140/1/34 . 1004.3698 . 2010AJ....140...34S . free .
  6. Balman . Solen . Retter . Alon . Bos . Marc . 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 . May 2006 . 131 . 5 . 2628–2633 . 10.1086/503161 . 7 December 2020. astro-ph/0601713 . 2006AJ....131.2628B . 18321996 .
  7. Hachisu . Izumi . Kato . Mariko . A Light-curve Analysis of 32 Recent Galactic Novae: Distances and White Dwarf Masses . The Astrophysical Journal Supplement Series . June 2019 . 242 . 2 . 18 . 10.3847/1538-4365/ab1b43 . 1905.10655 . 2019ApJS..242...18H . 166228785 . free .
  8. Hachisu . Izumi . Kato . Mariko . Light-curve Analysis of Neon Novae . The Astrophysical Journal . 1 January 2016 . 816 . 1 . 26 . 10.3847/0004-637X/816/1/26 . 1511.06819 . 2016ApJ...816...26H . 118690985 . free .
  9. Takeda . Larissa . Marcos . Diaz . Imaging and Analysis of Neon Nova V382 Vel Shell . Publications of the Astronomical Society of the Pacific . May 2019 . 131 . 999 . 054205 . 10.1088/1538-3873/ab0a47 . 1909.02051 . 2019PASP..131e4205T . free .

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