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N Carinae

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Star in the constellation Carina
N Carinae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Carina
Right ascension 06 34 58.57993
Declination −52° 58′ 32.1919″
Apparent magnitude (V) 4.35
Characteristics
Spectral type A0II or B9III
B−V color index −0.021±0.016
Astrometry
Radial velocity (Rv)+22.5±0.5 km/s
Proper motion (μ) RA: -7.65 mas/yr
Dec.: +10.54 mas/yr
Parallax (π)2.39 ± 0.13 mas
Distance1,360 ± 70 ly
(420 ± 20 pc)
Absolute magnitude (MV)−3.75
Details
Mass7.9±0.2 M☉
Luminosity3,411.35 L☉
Temperature8,004 K
Rotational velocity (v sin i)47 km/s
Age37.4±4.2 Myr
Other designations
N Car, CPD−52°953, FK5 2508, GC 8604, HD 47306, HIP 31407, HR 2435, SAO 234589
Database references
SIMBADdata

N Carinae is a single star in the constellation Carina, just to the northeast of the prominent star Canopus. This object has a white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.35. Based on parallax, it is located at a distance of approximately 1,360 light years from the Sun. It has an absolute magnitude of −3.75, and is drifting further away with a radial velocity of +22.5 km/s.

This object has a stellar classification of A0II, matching a massive bright giant. In the past it had received a class of B9III, which is sometimes still used. The star is 37 million years old with 7.9 times the mass of the Sun. It is spinning with a projected rotational velocity of 47 km/s. N Carinae is radiating 3,411 times the luminosity of the Sun from its photosphere at an effective temperature of 8,004 K.

References

  1. ^ 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.
  2. ^ 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.
  3. ^ Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
  4. ^ Eggen, O. J. (1962), "Space-velocity vectors for 3483 stars with proper motion and radial velocity", Royal Observatory Bulletin, 51, Bibcode:1962RGOB...51...79E.
  5. ^ Tetzlaff, N.; et al. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv:1007.4883, Bibcode:2011MNRAS.410..190T, doi:10.1111/j.1365-2966.2010.17434.x, S2CID 118629873.
  6. ^ McDonald, I.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society, 427: 343–357, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
  7. ^ Royer, F.; et al. (January 2002), "Rotational velocities of A-type stars. I. Measurement of v sin i in the southern hemisphere", Astronomy and Astrophysics, 381: 105–121, arXiv:astro-ph/0110490, Bibcode:2002A&A...381..105R, doi:10.1051/0004-6361:20011422, S2CID 13133418.
  8. "N Car". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-02-12.
  9. Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
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