Astronomy:HD 71863

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Short description: Star in the constellation Volans
HD 71863
Observation data
Epoch J2000.0   Equinox (celestial coordinates)
Constellation Volans
Right ascension  08h 25m 51.5958s[1]
Declination −64° 36′ 02.2300″[1]
Apparent magnitude (V) 5.94±0.01[2]
Characteristics
Spectral type G8/K0 III[3]
U−B color index +0.73[4]
B−V color index +0.92[4]
Astrometry
Radial velocity (Rv)19.1±3.1[5] km/s
Proper motion (μ) RA: −14.486[1] mas/yr
Dec.: +14.924[1] mas/yr
Parallax (π)7.9857 ± 0.079[1] mas
Distance408 ± 4 ly
(125 ± 1 pc)
Absolute magnitude (MV)+0.7[6]
Details[7]
Mass2.65±0.18 M☉
Radius11.06±0.26 R☉
Luminosity69.6±1.8 L☉
Surface gravity (log g)2.75±0.10 cgs
Temperature5,014±48 K
Metallicity [Fe/H]0.02±0.04 dex
Rotational velocity (v sin i)2.7±1.1[8] km/s
Other designations
CD−64°328, CPD−64°878, GC 11564, HD 71863, HIP 41321, HR 3346, SAO 250226[9][10]
Database references
SIMBADdata

HD 71863 (HR 3346) is a solitary star in the southern circumpolar constellation Volans. It is faintly visible to the naked eye with an apparent magnitude of 5.94 and is located 408 light-years away based on parallax measurements. However, it is receding with a radial velocity of 19.1 km/s.

HD 71863 has a classification of G8/K0 III[3] — intermediate between a G8 and K0 giant star. It has 2.65 times the mass of the Sun but has expanded to 11 times it's girth.[7] It shines at 72 times the luminosity of the Sun[7] and rotates slowly, with a projected rotational velocity of 2.7 km/s.[8] With an effective temperature of 5,014 K,[7] it has a yellowish-orange hue. HD 71863 metallicity – elements heavier than helium – is at solar level.[7]

HD 71863 is located near a group of stars moving with a Carinae, but is just moving with them by coincidence, and has no relation to the group.[11]

References

  1. ↑ 1.0 1.1 1.2 1.3 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.
  2. ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27–L30. ISSN 0004-6361. Bibcode: 2000A&A...355L..27H. 
  3. ↑ 3.0 3.1 Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0.. Bibcode: 1975mcts.book.....H. 
  4. ↑ 4.0 4.1 Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory 4: 99–110. Bibcode: 1966CoLPL...4...99J. 
  5. ↑ Gontcharov, G. A. (November 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. ISSN 1063-7737. Bibcode: 2006AstL...32..759G. 
  6. ↑ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation" (in en). Astronomy Letters 38 (5): 331–346. doi:10.1134/S1063773712050015. ISSN 1063-7737. Bibcode: 2012AstL...38..331A. 
  7. ↑ 7.0 7.1 7.2 7.3 7.4 Ottoni, G.; Udry, S.; Ségransan, D.; Buldgen, G.; Lovis, C.; Eggenberger, P.; Pezzotti, C.; Adibekyan, V. et al. (January 2022). "CORALIE radial-velocity search for companions around evolved stars (CASCADES): I. Sample definition and first results: Three new planets orbiting giant stars". Astronomy & Astrophysics 657: A87. doi:10.1051/0004-6361/202040078. ISSN 0004-6361. Bibcode: 2022A&A...657A..87O. 
  8. ↑ 8.0 8.1 De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars: V. Southern stars⋆⋆⋆". Astronomy & Astrophysics 561: A126. doi:10.1051/0004-6361/201220762. ISSN 0004-6361. Bibcode: 2014A&A...561A.126D. 
  9. ↑ "HD 46568". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+46568. 
  10. ↑ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino 1. Bibcode: 1879RNAO....1.....G. 
  11. ↑ Cantat-Gaudin, T.; Vallenari, A.; Sordo, R.; Pensabene, F.; Krone-Martins, A.; Moitinho, A.; Jordi, C.; Casamiquela, L. et al. (2018-07-01). "Characterising open clusters in the solar neighbourhood with the Tycho-Gaia Astrometric Solution". Astronomy and Astrophysics 615: A49. doi:10.1051/0004-6361/201731251. ISSN 0004-6361. Bibcode: 2018A&A...615A..49C. 



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