Astronomy:V372 Carinae

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Short description: Star in the constellation Carina
V372 Carinae
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A light curve for V372 Carinae, plotted from TESS data[1]
Observation data
Equinox J2000.0]] (ICRS)
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[3] mas
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. https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 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.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 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.
  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. doi:10.1051/0004-6361/202450896. Bibcode: 2024A&A...690A.135J. 
  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. doi:10.3847/1538-3881/ad5201. ISSN 0004-6256. Bibcode: 2024AJ....168...25G. 
  7. ↑ 7.0 7.1 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. doi:10.1111/j.1365-2966.2011.18575.x. Bibcode: 2011MNRAS.414.2602D. 
  8. ↑ 8.0 8.1 8.2 8.3 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. doi:10.1093/mnras/staf083. Bibcode: 2025MNRAS.538.1367Q. 
  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. doi:10.1093/mnras/staa670. Bibcode: 2020MNRAS.493.5871B. 
  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. doi:10.1111/j.1365-2966.2010.17434.x. Bibcode: 2011MNRAS.410..190T. 
  11. ↑ "V372 Car". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=V372+Car. 
  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. doi:10.1111/j.1365-2966.2008.13596.x. Bibcode: 2008MNRAS.389..869E. 
  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". Information Bulletin on Variable Stars 1921: 1–21. Bibcode: 1981IBVS.1921....1K. https://ibvs.konkoly.hu/pub/ibvs/1901/1921.pdf. Retrieved 10 January 2025. 
  15. ↑ "V372 Car". AAVSO. https://vsx.aavso.org/index.php?view=detail.top&oid=6125. 



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