Astronomy:N Carinae
  | |
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[2] mas/yr Dec.: +10.643[2] mas/yr |
| Parallax (π) | 1.9235 ± 0.0926[5] mas |
| 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 | |
| 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
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 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.
- ↑ 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.
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 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. doi:10.3847/1538-4365/acc321. Bibcode: 2023ApJS..266...11B.
- ↑ Stassun, Keivan G. et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S.
- ↑ Fetherolf, Tara et al. (2023). "Variability Catalog of Stars Observed during the TESS Prime Mission". The Astrophysical Journal Supplement Series 268 (1): 4. doi:10.3847/1538-4365/acdee5. Bibcode: 2023ApJS..268....4F.
- ↑ 9.0 9.1 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.
- ↑ 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.
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