Binary star system in the constellation Centaurus
HD 114837 is a suspectedbinary star[7][3] system in the southernconstellation ofCentaurus. The brighter star is faintly visible to the naked eye with anapparent visual magnitude of 4.90.[1] It has a magnitude 10.2 candidatecommon proper motion companion at anangular separation of4.2″, as of 2014.[3] The distance to this system, based on an annualparallax shift of54.825″ as seen from Earth's orbit,[2] is 59.5 light years. It is moving closer with a heliocentricradial velocity of −64 km/s,[5] and will approach to within 21.8 ly in around 240,600 years.[11]
The primary component is anF-type main-sequence star with astellar classification ofF6 V Fe-0.4,[4] showing a mild underabundance of iron in itsspectrum. It is about 3.4[9] billion years old with 1.14[7] times themass of the Sun and about 1.3[8] times the Sun's radius. This star is radiating 3.12[1] times theSun's luminosity from itsphotosphere at aneffective temperature of 6,346 K.[9]
- ^abcdefAnderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation".Astronomy Letters.38 (5): 331.arXiv:1108.4971.Bibcode:2012AstL...38..331A.doi:10.1134/S1063773712050015. XHIP record for this object atVizieR.
- ^abcdefgVallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties".Astronomy and Astrophysics.674: A1.arXiv:2208.00211.Bibcode:2023A&A...674A...1G.doi:10.1051/0004-6361/202243940.S2CID 244398875. Gaia DR3 record for this source atVizieR.
- ^abcChini, R.; et al. (January 2014), "New visual companions of solar-type stars within 25 pc",Monthly Notices of the Royal Astronomical Society,437 (1):879–886,arXiv:1310.2684,Bibcode:2014MNRAS.437..879C,doi:10.1093/mnras/stt1953.
- ^abGray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample",The Astronomical Journal,132 (1):161–170,arXiv:astro-ph/0603770,Bibcode:2006AJ....132..161G,doi:10.1086/504637,S2CID 119476992.
- ^abde 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.
- ^abAmmler-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.
- ^abcFuhrmann, K.; Chini, R.; Kaderhandt, L.; Chen, Z. (2017), "Multiplicity among Solar-type Stars",The Astrophysical Journal,836 (1): 139,Bibcode:2017ApJ...836..139F,doi:10.3847/1538-4357/836/1/139.
- ^abPasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition",Astronomy and Astrophysics,367 (2):521–524,arXiv:astro-ph/0012289,Bibcode:2001A&A...367..521P,doi:10.1051/0004-6361:20000451,S2CID 425754.
- ^abcdefCasagrande, L.; et al. (June 2011), "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey",Astronomy and Astrophysics,530: A138,arXiv:1103.4651,Bibcode:2011A&A...530A.138C,doi:10.1051/0004-6361/201016276,S2CID 56118016.
- ^"HD 114837".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved2018-07-05.
- ^Bailer-Jones, C. A. L. (March 2015), "Close encounters of the stellar kind",Astronomy & Astrophysics,575: 13,arXiv:1412.3648,Bibcode:2015A&A...575A..35B,doi:10.1051/0004-6361/201425221,S2CID 59039482, A35.
