V337 Carinae

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.

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)4.3397 ± 0.3865[1] mas
Distance750 ± 70 ly
(230 ± 20 pc)
Details
Mass9.0[6] M☉
Radius128[6] R☉
Luminosity3,236[6] L☉
Surface gravity (log g)1.17 - 1.36[6] cgs
Temperature4,118[6] K
Metallicity [Fe/H]0.54[6] dex
Age45.5[7] 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[8]
Database references
SIMBADdata

V337 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.[6] Its limb-darkened angular diameter has been measured using interferometry at 2.4 mas.[9]

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.[10] Component B is a distant background star,[11] while component C is at about the same distance as V337 Carinae.[12]

References
  1. 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. 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. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
  4. 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. 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.
  7. 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.
  8. V* V337 Car -- Variable Star, database entry, SIMBAD. Accessed on line August 27, 2008.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
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