V Puppis

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V Puppis
Puppis constellation map.svg
Red circle.svg
Location of V Puppis (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Puppis
Right ascension 07h 58m 14.43920s [1]
Declination −49° 14′ 41.6803″ [1]
Apparent magnitude  (V)4.41 [2]
(5.10 + 5.59) [3]
Characteristics
Spectral type B1Vp + B3IV: [4]
U−B color index −0.96 [2]
B−V color index −0.17 [2]
Variable type β Lyr [5]
Astrometry
Radial velocity (Rv)+19.40 [6]  km/s
Proper motion (μ)RA: -5.34 [1]   mas/yr
Dec.: +7.12 [1]   mas/yr
Parallax (π)3.40 ± 0.29  mas [1]
Distance 960 ± 80  ly
(290 ± 30  pc)
Absolute magnitude  (MV)−3.56 [7]
Orbit [3]
PrimaryV Pup Aa
CompanionV Pup Ab
Period (P)1.4544859 d
Semi-major axis (a)14.96±0.2 R☉
Details
V Pup Aa
Mass 14.0 [3]   M☉
Radius 5.48 [3]   R☉
Luminosity 12,600 [3]   L☉
Temperature 26,000 [3]   K
Rotational velocity (v sin i)275.0 [8]  km/s
V Pup Ab
Mass 7.3 [3]   M☉
Radius 4.59 [3]   R☉
Luminosity6,500 [3]   L☉
Temperature 24,000 [3]   K
Age 5 [3]   Myr
Other designations
CD-48°3349, CCDM  J07582-4915A, GC  10802, GSC  08143-03239, HIP  38957, HR  3129, HD  65818, SAO  219226, WDS  J07582-4915A
Database references
SIMBAD data

V Puppis (V Pup) is a star system in the constellation Puppis. Its apparent magnitude is 4.41. [2] There is a binary star system at the center with a B1 dwarf orbiting a B3 subgiant star. [4] They have an orbital period of 1.45 days and a distance of only 15 solar radii apart. [3] However, the system moves back and forth, indicating that there is a massive object orbiting them with a period around 5.47 years. Based on the mass of the object, its lack of a visible spectrum, and circumstellar matter in the system with many heavy elements (as would be produced by a past supernova in the system), it is probably a black hole. [9] [10] However, a follow-up study could not confirm this object, but found signs that there may be a third object which is fainter than the other components. [11]

A light curve for V Puppis, plotted from TESS data VPupLightCurve.png
A light curve for V Puppis, plotted from TESS data

In addition to the main system, more distant components have been reported: B, at magnitude 11.5 and separation 6.2", C, at magnitude 13.2 and separation 18.9", D, at magnitude 9.88 and separation 39", and E, at magnitude 13 and separation from D of 10.4". [13]

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<span class="mw-page-title-main">1 Puppis</span> Star in the constellation Puppis

1 Puppis is a single star in the southern constellation of Puppis. It lies in the northern part of the constellation at a distance of about 790 ly, east of Aludra in Canis Major and just north of the white supergiant, 3 Puppis. This object is visible to the naked eye as a faint, red-hued star with an apparent visual magnitude of 4.59. It is moving further from the Earth with a heliocentric radial velocity of +32.4 km/s.

<span class="mw-page-title-main">NV Puppis</span> Star in the constellation Puppis

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<span class="mw-page-title-main">19 Puppis</span> Binary star in the constellation Puppis

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<span class="mw-page-title-main">HD 54893</span> Star in the constellation Puppis

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<span class="mw-page-title-main">HD 50235</span> Star in the constellation Puppis

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<span class="mw-page-title-main">21 Sagittarii</span> Binary star system in the constellation Sagittarius

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HD 190056 is a class K1III star in the constellation Sagittarius. Its apparent magnitude is 4.99 and it is approximately 291 light years away based on parallax.

<span class="mw-page-title-main">50 Camelopardalis</span> Giant star in the constellation Lynx

50 Camelopardalis is a double star in the northern constellation of Lynx. This object is visible to the naked eye as a faint white star with an apparent visual magnitude of 5.4. It is 430 light years away and moving further from the Earth with a heliocentric radial velocity of 20 km/s.

References

  1. 1 2 3 4 5 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv: 0708.1752 . Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID   18759600. Vizier catalog entry
  2. 1 2 3 4 Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  3. 1 2 3 4 5 6 7 8 9 10 11 12 Budding, E.; Love, T.; Blackford, M. G.; Banks, T.; Rhodes, M. J. (2021). "Absolute Parameters of Young Stars: V Puppis". Monthly Notices of the Royal Astronomical Society. 502 (4): 6032–6043. arXiv: 2102.00362 . doi:10.1093/mnras/stab381.
  4. 1 2 Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.
  5. ↑ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  6. ↑ Pourbaix, D.; Tokovinin, A. A.; Batten, A. H.; Fekel, F. C.; Hartkopf, W. I.; Levato, H.; Morrell, N. I.; Torres, G.; Udry, S. (2004). "SB9: The ninth catalogue of spectroscopic binary orbits". Astronomy and Astrophysics. 424 (2): 727–732. arXiv: astro-ph/0406573 . Bibcode:2004A&A...424..727P. doi:10.1051/0004-6361:20041213. S2CID   119387088.
  7. ↑ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv: 1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID   119257644. Vizier catalog entry
  8. ↑ Glebocki, R.; Gnacinski, P. (2005). "VizieR Online Data Catalog: Catalog of Stellar Rotational Velocities (Glebocki+ 2005)". VizieR On-line Data Catalog: III/244. Originally Published in: 2005csss...13..571G; 2005yCat.3244....0G. 3244. Bibcode:2005yCat.3244....0G. Vizier catalog entry
  9. ↑ Kaler, Jim (2 Jan 2009). "V Pup". Stars. Retrieved 31 Jan 2013.
  10. ↑ Qian, S.‐B.; Liao, W.‐P.; Fernández Lajús, E. (2008). "Evidence of a Massive Black Hole Companion in the Massive Eclipsing Binary V Puppis". The Astrophysical Journal. 687 (1): 466–470. arXiv: 0806.4944 . Bibcode:2008ApJ...687..466Q. doi:10.1086/591515. S2CID   380178.
  11. ↑ Budding, E; Love, T; Blackford, M G; Banks, T; Rhodes, M J (9 March 2021). "Absolute parameters of young stars: V puppis". Monthly Notices of the Royal Astronomical Society. 502 (4): 6032–6043. arXiv: 2102.00362 . doi: 10.1093/mnras/stab381 .
  12. ↑ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.
  13. ↑ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi: 10.1086/323920 . Vizier catalog entry
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