J Centauri

Last updated
J Centauri
Observation data
Epoch J2000.0        Equinox J2000.0
Constellation Centaurus [1]
Right ascension 13h 22m 37.9331s [2]
Declination −60° 59′ 18.170″ [2]
Apparent magnitude  (V)+4.505 [3]
Characteristics
Evolutionary stage main sequence [2]
Spectral type B3V [4]
U−B color index −0.62 [5]
B−V color index −0.13 [5]
Astrometry
Radial velocity (Rv)+6.0 [6] km/s
Proper motion (μ)RA: −29.518 [2] mas/yr
Dec.: −21.698 [2] mas/yr
Parallax (π)8.8824±0.1293  mas [2]
Distance 367 ± 5  ly
(113 ± 2  pc)
Absolute magnitude  (MV)−0.66 [1]
Details
Mass 4.1 [2] [7]   M☉
Radius 3.6 [2]   R☉
Luminosity 265 [7]   L☉
Surface gravity (log g)3.97 [2]   cgs
Temperature 24,757 [7]   K
Rotational velocity (v sin i)223 [8]  km/s
Age 15.4 [9]   Myr
Other designations
HR 5035, HD 116087, CD−60°4640, FK5 1347, HIP 65271, SAO 252284, GC 18087, CCDM J13226-6059 [3]
Database references
SIMBAD data

J Centauri (J Cen) is a star in the constellation Centaurus. Its mean apparent magnitude is 4.5, making it easily visible to the naked eye. It is approximately 350 light years from Earth.

J Centauri is a spectral class B3V main sequence star with a luminosity 265 times that of the Sun. The temperature of the star's photosphere is nearly 25,000 K. The rotation velocity at the equator is at least 223 km/s. [8] It is believed to be a binary star system. [10]

This star may be a member of the Scorpio-Centaurus OB association (Sco OB2). This is one of the nearest regions of recent star formation. [11]

References

  1. 1 2 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.
  2. 1 2 3 4 5 6 7 8 9 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.
  3. 1 2 "CCDM J13226-6059AB -- Double or multiple star". SIMBAD. Centre de Données astronomiques de Strasbourg . Retrieved 2009-09-08.
  4. ↑ Hiltner, W. A.; Garrison, R. F.; Schild, R. E. (July 1969). "MK Spectral Types for Bright Southern OB Stars". The Astrophysical Journal . 157: 313. Bibcode:1969ApJ...157..313H. doi: 10.1086/150069 .
  5. 1 2 Landolt, Arlo U. (August 1969). "UBV Observations of Selected Double Systems, II". Publications of the Astronomical Society of the Pacific. 81 (481): 443–446. Bibcode:1969PASP...81..443L. doi: 10.1086/128801 .
  6. ↑ Jilinski, E.; Daflon, S.; Cunha, K.; de La Reza, R. (March 2006). "Radial velocity measurements of B stars in the Scorpius–Centaurus association". Astronomy and Astrophysics. 448 (3): 1001–1006. arXiv: astro-ph/0601643 . Bibcode:2006A&A...448.1001J. doi:10.1051/0004-6361:20041614. S2CID   17818058.
  7. 1 2 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. arXiv: 2503.08286 . Bibcode:2025MNRAS.538.1367Q. doi: 10.1093/mnras/staf083 .
  8. 1 2 Wolff, S. C.; et al. (2007). "Rotational Velocities for B0-B3 Stars in Seven Young Clusters: Further Study of the Relationship between Rotation Speed and Density in Star-Forming Regions". The Astronomical Journal . 133 (3): 1092–1103. arXiv: astro-ph/0702133 . Bibcode:2007AJ....133.1092W. doi:10.1086/511002. S2CID   119074863.
  9. ↑ Gratton, R.; Squicciarini, V.; Nascimbeni, V.; Janson, M.; Reffert, S.; Meyer, M.; Delorme, P.; Mamajek, E. E.; Bonavita, M.; Desidera, S.; Mesa, D.; Rigliaco, E.; d'Orazi, V.; Vigan, A.; Lazzoni, C.; Chauvin, G.; Langlois, M. (2023). "Multiples among B stars in the Scorpius-Centaurus association". Astronomy and Astrophysics. 678: A93. arXiv: 2308.09962 . Bibcode:2023A&A...678A..93G. doi:10.1051/0004-6361/202346806.
  10. ↑ Shatsky, N.; Tokovinin, A. (2002). "The mass ratio distribution of B-type visual binaries in the Sco OB2 association". Astronomy and Astrophysics. 382: 92–103. arXiv: astro-ph/0109456 . Bibcode:2002A&A...382...92S. doi:10.1051/0004-6361:20011542. S2CID   16697655.
  11. ↑ Lub, J.; de Geus, E. J.; van de Grift, E. (October 1990). "Walraven photometry of nearby southern OB associations". Astronomy and Astrophysics Supplement Series. 85 (2): 915–970. Bibcode:1990A&AS...85..915D.
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