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Kappa Reticuli
Location of κ Reticuli (circled)
Observation data
Epoch J2000.0       Equinox J2000.0 ( ICRS)
Constellation Reticulum
Right ascension 03h 29m 22.67724s [1]
Declination −62° 56′ 15.0991″ [1]
Apparent magnitude (V) +4.71 [2] + 10.7 [3]
Characteristics
Spectral type F3 V [4] or F3 IV/V [5] + M1 [6]
U−B color index −0.04 [2]
B−V color index +0.39 [2]
Astrometry
Radial velocity (Rv)+12.5±0.4 [7] km/s
Proper motion (μ) RA: +382.84 [1]  mas/ yr
Dec.: +373.05 [1]  mas/ yr
Parallax (π)46.12 ± 0.13  mas [1]
Distance70.7 ± 0.2  ly
(21.68 ± 0.06  pc)
Absolute magnitude (MV)+2.98 [8]
Details
κ Ret A
Mass1.32 [9]  M☉
Radius1.1 [10]  R☉
Surface gravity (log g)4.31 [9]  cgs
Temperature6,796±231 [9]  K
Metallicity [Fe/H]−0.07 [11]  dex
Rotational velocity (v sin i)13.5±0.7 [12] km/s
Age848 [9]  Myr
κ Ret B
Mass0.54 [6]  M☉
Radius0.50 [6]  R☉
Luminosity0.043 [6]  L☉
Temperature3,733 [6]  K
Other designations
κ Ret, 4 Ret, CD−63° 112, FK5 126, HD 22001, HIP 16245, HR 1083, SAO 248819, WDS J03294-6256A [13]
Database references
SIMBAD data

Kappa Reticuli (κ Reticuli) is a binary star [3] system in the southern constellation of Reticulum. It is visible to the naked eye, having a combined apparent visual magnitude of +4.71. [2] Based upon an annual parallax shift of 46.12  mas as seen from Earth, [1] it is located 71  light-years from the Sun. Based upon its space velocity components, this star is a member of the Hyades supercluster of stars that share a common motion through space. [14]

Houk and Cowley (1978) catalogued the yellow-hued [15] primary, component A, with a stellar classification of F3 IV/V, [5] indicating this is an F-type star that showing mixed traits of a main-sequence and a more evolved subgiant star. Later, Grey et al. (2006) listed a class of F3 V, [4] suggesting it is an F-type main-sequence star. It is emitting a statistically significant amount of infrared excess, suggesting the presence of an orbiting debris disk. [16] The secondary, component B, is an orange-hued [15] star with a visual magnitude of 10.4 at an angular separation of 54  arcseconds from the primary. [3]

References

  1. ^ a b c d e f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv: 0708.1752, Bibcode: 2007A&A...474..653V, doi: 10.1051/0004-6361:20078357, S2CID  18759600.
  2. ^ a b c d Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99): 99, Bibcode: 1966CoLPL...4...99J.
  3. ^ a b c Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv: 0806.2878, Bibcode: 2008MNRAS.389..869E, doi: 10.1111/j.1365-2966.2008.13596.x, S2CID  14878976.
  4. ^ a b Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Northern Sample I", The Astronomical Journal, 132 (1): 161–170, arXiv: astro-ph/0603770, Bibcode: 2006AJ....132..161G, doi: 10.1086/504637, S2CID  119476992.
  5. ^ a b Houk, Nancy; Cowley, A. P. (1978), "Michigan catalogue of two-dimensional spectral types for the HD stars", University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0, 1, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode: 1975mcts.book.....H.
  6. ^ a b c d e Gaidos, E.; Mann, A. W.; Lépine, S.; Buccino, A.; James, D.; Ansdell, M.; Petrucci, R.; Mauas, P.; Hilton, E. J. (2014). "Trumpeting M dwarfs with CONCH-SHELL: A catalogue of nearby cool host-stars for habitable exoplanets and life". Monthly Notices of the Royal Astronomical Society. 443 (3): 2561. arXiv: 1406.7353. Bibcode: 2014MNRAS.443.2561G. doi: 10.1093/mnras/stu1313. S2CID  119234492.
  7. ^ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv: 1208.3048, Bibcode: 2012A&A...546A..61D, doi: 10.1051/0004-6361/201219219, S2CID  59451347, A61.
  8. ^ Reiners, Ansgar (January 2006), "Rotation- and temperature-dependence of stellar latitudinal differential rotation", Astronomy and Astrophysics, 446 (1): 267–277, arXiv: astro-ph/0509399, Bibcode: 2006A&A...446..267R, doi: 10.1051/0004-6361:20053911, S2CID  8642707
  9. ^ a b c d David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv: 1501.03154, Bibcode: 2015ApJ...804..146D, doi: 10.1088/0004-637X/804/2/146, S2CID  33401607.
  10. ^ Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (2) (Third ed.): 521–524, arXiv: astro-ph/0012289, Bibcode: 2001A&A...367..521P, doi: 10.1051/0004-6361:20000451, S2CID  425754.
  11. ^ Casagrande, L.; et al. (2011), "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey", Astronomy & Astrophysics, 530 (A138): 21, arXiv: 1103.4651, Bibcode: 2011A&A...530A.138C, doi: 10.1051/0004-6361/201016276, S2CID  56118016.
  12. ^ Ammler-von Eiff, Matthias; Reiners, Ansgar (June 2012), "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?", Astronomy & Astrophysics, 542: A116, arXiv: 1204.2459, Bibcode: 2012A&A...542A.116A, doi: 10.1051/0004-6361/201118724, S2CID  53666672.
  13. ^ "kap Ret". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-07-14.{{ cite web}}: CS1 maint: postscript ( link)
  14. ^ Montes, D.; et al. (November 2001), "Late-type members of young stellar kinematic groups - I. Single stars" (PDF), Monthly Notices of the Royal Astronomical Society, 328 (1): 45–63, arXiv: astro-ph/0106537, Bibcode: 2001MNRAS.328...45M, doi: 10.1046/j.1365-8711.2001.04781.x, S2CID  55727428, archived from the original (PDF) on 2017-09-22, retrieved 2018-11-04.
  15. ^ a b Streicher, Magda (December 2009), "Reticulum: The Celestial Crosshairs", Monthly Notes of the Astronomical Society of South Africa, 68 (11–12): 242–246, Bibcode: 2009MNSSA..68..242S.
  16. ^ Gáspár, András; et al. (May 2013), "The Collisional Evolution of Debris Disks", The Astrophysical Journal, 768 (1): 29, arXiv: 1211.1415, Bibcode: 2013ApJ...768...25G, doi: 10.1088/0004-637X/768/1/25, S2CID  119295265, 25.
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