V372 Carinae

V372 Carinae

A light curve for V372 Carinae, plotted from TESS data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Carina[2]
Right ascension 07h 52m 29.74164s[3]
Declination −54° 22′ 01.7889″[3]
Apparent magnitude (V) 5.70[2]
Characteristics
Evolutionary stage main sequence[4]
Spectral type B2V[5][2][6]
B−V color index −0.151±0.004[2]
Variable type Beta Cephei[7]
Astrometry
Radial velocity (Rv)+18.0±4.3[2] km/s
Proper motion (μ) RA: −4.642[3] mas/yr
Dec.: +8.605[3] mas/yr
Parallax (π)2.4079±0.0633 mas[3]
Distance1,350 ± 40 ly
(420 ± 10 pc)
Absolute magnitude (MV)−2.35[2]
Details
Mass8.3[8] M☉
Radius6.97[3] R☉
Luminosity4,236[8] L☉
Surface gravity (log g)3.65[3] cgs
Temperature21,429[8] K
Rotational velocity (v sin i)155[9] km/s
Age15.8±2.2[10] Myr
Other designations
V372 Car, CD−54°1966, HD 64722, HIP 38438, HR 3088, SAO 235579[11]
Database references
SIMBADdata

V372 Carinae is a single[12] star in the southern constellation of Carina. Located around 1,350 light-years distant. It shines with a luminosity approximately 4,236 times that of the Sun and has a surface temperature of 21,429 K.[8] It is a Beta Cephei variable.[7] A magnitude 5.7 star, it will be faintly visible on moonless nights to the naked eye of a person located far from city lights.

In 1977, Mikołaj Jerzykiewicz and Christiaan Sterken announced their discovery that the star is variable.[13] It was given its variable-star designation, V372 Carinae, in 1981.[14] The brightness of V372 Carinae varies by up to three hundredths of a magnitude with a fairly regular period of 2.8 hours.[15]

References

  1. ^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.
  2. ^ a b c d e f 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.
  3. ^ a b c d e f g 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.
  4. ^ Jin, Harim; Langer, Norbert; Lennon, Daniel J.; Proffitt, Charles R. (2024). "Boron depletion in Galactic early B-type stars reveals two different main sequence star populations". Astronomy and Astrophysics. 690: A135. arXiv:2405.18266. Bibcode:2024A&A...690A.135J. doi:10.1051/0004-6361/202450896.
  5. ^ Cucchiaro, A.; Jaschek, M.; Jaschek, C.; Macau-Hercot, D. (November 1976). "Spectral classification from the ultraviolet line features of S2/68 spectra. I. Early B-type stars". Astronomy & Astrophysics Supplement Series. 26: 241. Bibcode:1976A&AS...26..241C.
  6. ^ Ge, Q. A.; Li, J. J.; Hao, C. J.; Lin, Z. H.; Hou, L. G.; Liu, D. J.; Li, Y. J.; Bian, S. B. (2024-07-01). "Evolution of the Local Spiral Structure Revealed by OB-type Stars in Gaia DR3". The Astronomical Journal. 168 (1): 25. Bibcode:2024AJ....168...25G. doi:10.3847/1538-3881/ad5201. ISSN 0004-6256.
  7. ^ a b Dubath, P.; Rimoldini, L.; Süveges, M.; Blomme, J.; López, M.; Sarro, L. M.; et al. (2011). "Random forest automated supervised classification of Hipparcos periodic variable stars". Monthly Notices of the Royal Astronomical Society. 414 (3): 2602–17. arXiv:1101.2406. Bibcode:2011MNRAS.414.2602D. doi:10.1111/j.1365-2966.2011.18575.x. S2CID 118560311.
  8. ^ a b c d Quintana, Alexis L.; Wright, Nicholas J.; Martínez García, Juan (2025). "A census of OB stars within 1 KPC and the star formation and core collapse supernova rates of the Milky Way". Monthly Notices of the Royal Astronomical Society. 538 (3): 1367. arXiv:2503.08286. Bibcode:2025MNRAS.538.1367Q. doi:10.1093/mnras/staf083.
  9. ^ Balona, L. A.; Ozuyar, D. (2020). "Pulsation among TESS a and B stars and the Maia variables". Monthly Notices of the Royal Astronomical Society. 493 (4): 5871. arXiv:2001.04497. Bibcode:2020MNRAS.493.5871B. doi:10.1093/mnras/staa670.
  10. ^ 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.
  11. ^ "V372 Car". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-02-18.
  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.
  13. ^ Jerzykiewicz, M.; Sterken, C. (1977). "Search for beta Cephei stars south of declination -20 . I. Incidence of light variability among early B giants and subgiants - summer objects". Acta Astron. 27: 365–387. Bibcode:1977AcA....27..365J.
  14. ^ Kholopov, P. N.; Samus, N. N.; Kukarkina, N. P.; Medvedeva, G. I.; Perova, N. B. (February 1981). "65th Name-List of Variable Stars" (PDF). Information Bulletin on Variable Stars. 1921: 1–21. Bibcode:1981IBVS.1921....1K. Retrieved 10 January 2025.
  15. ^ "V372 Car". International Variable Star Index. AAVSO. Retrieved 2025-07-01.
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