Astronomy:N Carinae
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Carina |
| Right ascension | 06h 34m 58.57993s[1] |
| Declination | −52° 58′ 32.1919″[1] |
| Apparent magnitude (V) | 4.35[2] |
| Characteristics | |
| Spectral type | A0II[3] or B9III[4] |
| B−V color index | −0.021±0.016[2] |
| Astrometry | |
| Radial velocity (Rv) | +22.5±0.5[2] km/s |
| Proper motion (μ) | RA: -7.65[1] mas/yr Dec.: +10.54[1] mas/yr |
| Parallax (π) | 2.39 ± 0.13[1] mas |
| Distance | 1,360 ± 70 ly (420 ± 20 pc) |
| Absolute magnitude (MV) | −3.75[2] |
| Details | |
| Mass | 7.9±0.2[5] M☉ |
| Luminosity | 3,411.35[2] L☉ |
| Temperature | 8,004[6] K |
| Rotational velocity (v sin i) | 47[7] km/s |
| Age | 37.4±4.2[5] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
N Carinae is a single[9] 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.[2] Based on parallax, it is located at a distance of approximately 1,360 light years from the Sun.[1] It has an absolute magnitude of −3.75,[2] and is drifting further away with a radial velocity of +22.5 km/s.[2]
This object has a stellar classification of A0II,[3] matching a massive bright giant. In the past it had received a class of B9III,[4] which is sometimes still used.[5] The star is 37 million years old with 7.9 times the mass of the Sun.[5] It is spinning with a projected rotational velocity of 47 km/s.[7] N Carinae is radiating 3,411[2] times the luminosity of the Sun from its photosphere at an effective temperature of 8,004 K.[6]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode: 1978mcts.book.....H.
- ↑ 4.0 4.1 Eggen, O. J. (1962), "Space-velocity vectors for 3483 stars with proper motion and radial velocity", Royal Observatory Bulletin 51, Bibcode: 1962RGOB...51...79E.
- ↑ 5.0 5.1 5.2 5.3 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, doi:10.1111/j.1365-2966.2010.17434.x, Bibcode: 2011MNRAS.410..190T.
- ↑ 6.0 6.1 McDonald, I. et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society 427: 343–357, doi:10.1111/j.1365-2966.2012.21873.x, Bibcode: 2012MNRAS.427..343M.
- ↑ 7.0 7.1 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, doi:10.1051/0004-6361:20011422, Bibcode: 2002A&A...381..105R.
- ↑ "N Car". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=N+Car.
- ↑ 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
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