V337 Carinae

This article is about q Carinae. For Q Carinae, see HD 61248.
V337 Carinae
Location of V337 Carinae (circled)
Observation data
Epoch J2000.0      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 mas[6]
Distance760 ± 20 ly
(232 ± 7 pc)
Details
Mass9.0[7] 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.

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

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.[11] Its limb-darkened angular diameter has been measured using interferometry at 2.4 mas.[12]

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.[13] Component B is a distant background star,[14] while component C is at about the same distance as V337 Carinae.[15]

  1. ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b V337 Car, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars Archived 2017-06-20 at the Wayback Machine, 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. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
  4. ^ a b c D. Hoffleit & W. H. Warren, Jr. "The Bright Star Catalogue, Database entry for HR 4050" (5th Revised ed.). Centre de Données astronomiques de Strasbourg (CDS). Retrieved August 27, 2008.
  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. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
  6. ^ Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  7. ^ a b c d e f g Kallinger, T.; Beck, P. G.; Hekker, S.; Huber, D.; Kuschnig, R.; Rockenbauer, M.; Winter, P. M.; Weiss, W. W.; Handler, G.; Moffat, A. F. J.; Pigulski, A.; Popowicz, A.; Wade, G. A.; Zwintz, K. (2019). "Stellar masses from granulation and oscillations of 23 bright red giants observed by BRITE-Constellation". Astronomy and Astrophysics. 624: A35. arXiv:1902.07531. Bibcode:2019A&A...624A..35K. doi:10.1051/0004-6361/201834514. S2CID 102486794.
  8. ^ 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. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873.
  9. ^ V* V337 Car -- Variable Star, database entry, SIMBAD. Accessed on line August 27, 2008.
  10. ^ Cite error: The named reference MAST was invoked but never defined (see the help page).
  11. ^ 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. arXiv:2004.02045. Bibcode:2020ApJ...899..153M. doi:10.3847/1538-4357/ab99a6.
  12. ^ 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. arXiv:0906.3981. Bibcode:2009MNRAS.399..399R. doi:10.1111/j.1365-2966.2009.15289.x.
  13. ^ 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. Bibcode:2001AJ....122.3466M. doi:10.1086/323920.
  14. ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  15. ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.