Astronomy:V337 Carinae

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Short description: Star in the constellation of Carina
V337 Carinae
Location of V337 Carinae (circled)
Observation data
Equinox J2000.0]] (ICRS)
Constellation Carina
Right ascension  10h 17m 04.9753s[1]
Declination −61° 19′ 56.288″[1]
Apparent magnitude (V) 3.36 to 3.44[2]
Characteristics
Spectral type K2.5II[3]
U−B color index +1.72[4]
B−V color index +1.54[4]
R−I color index +0.77[4]
Variable type LC[2]
Astrometry
Radial velocity (Rv)8.2±0.9[5] km/s
Proper motion (μ) RA: −23.922[1] mas/yr
Dec.: 6.734[1] mas/yr
Parallax (π)4.3046 ± 0.1345[6] mas
Distance760 ± 20 ly
(232 ± 7 pc)
Details
Mass9.0[7] or 6.9[8] M☉
Radius128[7] R☉
Luminosity3,236[7] L☉
Surface gravity (log g)1.17 - 1.36[7] cgs
Temperature4,118[7] K
Metallicity [Fe/H]0.54[7] dex
Age45.5[8] Myr
Other designations
V337 Car, q Carinae, q Car, CCDM J10171-6120A, CD−60°3010, CPD−60°1817, CSI−60° 1817 41, FK5 1264, GC 14133, GSC 08943-03447, HD 89388, HIP 50371, HR 4050, IDS 10137-6050 A, PPM 357895, SAO 250905, TYC 8943-3447-1[9]
Database references
SIMBADdata

V337 Carinae (V337 Car, q Carinae) is a K-type bright giant star in the constellation of Carina. It is an irregular variable and has an apparent visual magnitude which varies between 3.36 and 3.44. It is easily visible to the naked eye, except in brightly lit urban areas.

A light curve for V337 Carinae, plotted from TESS data[10]

Benjamin Apthorp Gould listed the star as possibly variable in his 1879 publication Uranometria Argentina, when it was known as q Carinae.[11] It was given its variable star designation, V337 Carinae, nearly 100 years later, in 1973.[12]

V337 Carinae has a spectral class of K2.5II, indicating a bright giant. It is considered likely to be on the red giant branch of stars fusing hydrogen around an inert helium core.[7] However, with a mass nine times that of the Sun, it is also an accepted supernova candidate.[13] Its limb-darkened angular diameter has been measured using interferometry at 2.4 mas.[14]

V337 Carinae has two companions listed in multiple star catalogues. Both are 13th-magnitude stars, component B 16.9″ and component C 25.9″ away.[15] Component B is a distant background star,[16] while component C is at about the same distance as V337 Carinae.[17]

References

  1. ↑ 1.0 1.1 1.2 1.3 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  2. ↑ 2.0 2.1 V337 Car, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars , Sternberg Astronomical Institute, Moscow, Russia. Accessed on line August 27, 2008.
  3. ↑ Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins Catalog of Revised MK Types for the Cooler Stars". The Astrophysical Journal Supplement Series 71: 245. doi:10.1086/191373. Bibcode: 1989ApJS...71..245K. 
  4. ↑ 4.0 4.1 4.2 D. Hoffleit; W. H. Warren, Jr.. "The Bright Star Catalogue, Database entry for HR 4050". Centre de Données astronomiques de Strasbourg (CDS). http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=V/50/catalog&recno=4050. 
  5. ↑ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. doi:10.1134/S1063773706110065. Bibcode: 2006AstL...32..759G. 
  6. ↑ Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G.  Gaia EDR3 record for this source at VizieR.
  7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 7.6 Kallinger, T.; Beck, P. G.; Hekker, S.; Huber, D.; Kuschnig, R.; Rockenbauer, M.; Winter, P. M.; Weiss, W. W. et al. (2019). "Stellar masses from granulation and oscillations of 23 bright red giants observed by BRITE-Constellation". Astronomy and Astrophysics 624: A35. doi:10.1051/0004-6361/201834514. Bibcode: 2019A&A...624A..35K. 
  8. ↑ 8.0 8.1 Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 KPC from the Sun". Monthly Notices of the Royal Astronomical Society 410 (1): 190. doi:10.1111/j.1365-2966.2010.17434.x. Bibcode: 2011MNRAS.410..190T. 
  9. ↑ V* V337 Car -- Variable Star, database entry, SIMBAD. Accessed on line August 27, 2008.
  10. ↑ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html. 
  11. ↑ Gould, Benjamin Apthorp (1879). "Uranometria Argentina: Brightness and position of every fixed star, down to the seventh magnitude, within one hundred degrees of the South Pole; with atlas". Resultados del Observatorio Nacional Argentino 1: I-387. Bibcode: 1879RNAO....1....1G. https://articles.adsabs.harvard.edu/pdf/1879RNAO....1D...1G. Retrieved 9 January 2025. 
  12. ↑ Kukarkin, B. V.; Kholopov, P. N.; Kukarkina, N. P.; Perova, N. B. (October 1973). "59th Name-List of Variable Stars". Information Bulletin on Variable Stars 834. Bibcode: 1973IBVS..834....1K. https://ibvs.konkoly.hu/pub/ibvs/0801/0834.pdf. Retrieved 9 January 2025. 
  13. ↑ Mukhopadhyay, Mainak; Lunardini, Cecilia; Timmes, F. X.; Zuber, Kai (2020-04-04). "Presupernova Neutrinos: Directional Sensitivity and Prospects for Progenitor Identification". The Astrophysical Journal 899 (2): 153. doi:10.3847/1538-4357/ab99a6. Bibcode: 2020ApJ...899..153M. 
  14. ↑ Richichi, A.; Percheron, I.; Davis, J. (2009). "A list of bright interferometric calibrators measured at the European Southern Observatory Very Large Telescope Interferometer". Monthly Notices of the Royal Astronomical Society 399 (1): 399. doi:10.1111/j.1365-2966.2009.15289.x. Bibcode: 2009MNRAS.399..399R. 
  15. ↑ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal 122 (6): 3466. doi:10.1086/323920. Bibcode: 2001AJ....122.3466M. 
  16. ↑ Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  17. ↑ Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.



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