N Carinae
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Carina[1] |
| Right ascension | 06h 34m 58.580s[2] |
| Declination | −52° 58′ 32.19″[2] |
| Apparent magnitude (V) | 4.35[1] |
| Characteristics | |
| Spectral type | A0II[3] or B9III[4] |
| B−V color index | −0.021±0.016[1] |
| Astrometry | |
| Radial velocity (Rv) | +22.5±0.5[1] km/s |
| Proper motion (μ) | RA: −7.537 mas/yr[2] Dec.: +10.643 mas/yr[2] |
| Parallax (π) | 1.9235±0.0926 mas[5] |
| Distance | 1,700 ± 80 ly (520 ± 30 pc) |
| Absolute magnitude (MV) | −3.75[1] |
| Details | |
| Mass | 5.1±0.1[6] M☉ |
| Radius | 20[7] R☉ |
| Luminosity | 3,249[8] L☉ |
| Surface gravity (log g) | 2.45±0.03[6] cgs |
| Temperature | 9361±94[6] K |
| Metallicity [Fe/H] | −0.34±0.03[6] dex |
| Rotational velocity (v sin i) | 47[9] km/s |
| Age | 87±5[6] Myr |
| Other designations | |
| N Car, CPD−52°953, FK5 2508, GC 8604, HD 47306, HIP 31407, HR 2435, SAO 234589[10] | |
| Database references | |
| SIMBAD | data |
N Carinae is a single star[11] in the constellation Carina, just to the northeast of the prominent star Canopus. Its name is a Bayer designation. This object has a white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.35.[1] Based on parallax, it is located at a distance of approximately 1,700 light years from the Sun.[2] It has an absolute magnitude of −3.75,[1] and is drifting further away with a radial velocity of +22.5 km/s.[1]
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.[12] The star is 87 million years old with 5.1 times the mass of the Sun.[6] It is spinning with a projected rotational velocity of 47 km/s.[9] N Carinae is radiating 3,249 times the luminosity of the Sun from its photosphere at an effective temperature of 9,361 K.[6]
References
- ^ a b c d e f g h 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. XHIP record for this object at VizieR.
- ^ a b c d Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b 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.
- ^ a b Eggen, O. J. (1962). "Space-velocity vectors for 3483 stars with proper motion and radial velocity". Royal Observatory Bulletin. 51. Bibcode:1962RGOB...51...79E.
- ^ 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.
- ^ a b c d e f g Borisov, Sviatoslav B.; et al. (2023). "New Generation Stellar Spectral Libraries in the Optical and Near-infrared. I. The Recalibrated UVES-POP Library for Stellar Population Synthesis". The Astrophysical Journal Supplement Series. 266 (1): 11. arXiv:2211.09130. Bibcode:2023ApJS..266...11B. doi:10.3847/1538-4365/acc321.
- ^ Stassun, Keivan G.; et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467.
- ^ Fetherolf, Tara; et al. (2023). "Variability Catalog of Stars Observed during the TESS Prime Mission". The Astrophysical Journal Supplement Series. 268 (1): 4. arXiv:2208.11721. Bibcode:2023ApJS..268....4F. doi:10.3847/1538-4365/acdee5.
- ^ a b 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.
- ^ "N Car". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-02-12.
- ^ 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.
- ^ 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.