Wide binary star system in the constellation Phoenix
HD 142 is a widebinary star [ 5] constellation ofPhoenix . The main component has a yellow-white hue and is dimly visible to the naked eye with anapparent visual magnitude of 5.7.[ 3] light years from theSun based onparallax measurements, and is drifting further away with aradial velocity of +6 km/s.[ 17]
The primary component is anF-type main-sequence star with astellar classification of F7V,[ 6] core hydrogen fusion . It is an estimated 2.5[ 12] projected rotational velocity of 10 km/s.[ 13] mass of the Sun and 1.4 times theSun's radius . It is radiating 2.9 times theluminosity of the Sun from itsphotosphere at aneffective temperature of 6,338 K.[ 12]
A magnitude 11.5[ 5] binary star system.[ 18] gravitationally bound in 2007 and determined to be ared dwarf ofspectral type K8.5-M1.5[ 7] [ 14] AU [ 14]
In 2001, theAnglo-Australian Planet Search team led byChris Tinney announced the discovery of anextrasolar planet orbiting the primary star.[ 19] [ 20] radial velocity data was noticed in 2006[ 21] [ 22] [ 23] [ 24]
Anastrometric measurement of HD 142 b's inclination and true mass was published in 2022 as part ofGaia DR3 .[ 25] [ 26]
^ Roman, Nancy G. (1987)."Identification of a Constellation From a Position" .Publications of the Astronomical Society of the Pacific .99 (617):695– 699.Bibcode :1987PASP...99..695R doi :10.1086/132034 Vizier query form ^a b 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 atVizieR .^a b Olsen, E. H. (1994). "Stroemgren photometry of F- and G-type stars brighter than V = 9.6. I. UVBY photometry".Astronomy and Astrophysics Supplement Series .106 :257– 266.Bibcode :1994A&AS..106..257O Vizier catalog entry ^a b 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 atVizieR .^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 ^a b Gray, R. O.; et al. (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 ^a b Eggenberger, A.; et al. (2007)."The impact of stellar duplicity on planet occurrence and properties I. Observational results of a VLT/NACO search for stellar companions to 130 nearby stars with and without planets" .Astronomy and Astrophysics .474 (1):273– 291.Bibcode :2007A&A...474..273E doi :10.1051/0004-6361:20077447 ^ Anderson, 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 .S2CID 119257644 . ^a b c d Vallenari, 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 .^ Holmberg; et al. (2009)."HD 142" .Geneva-Copenhagen Survey of Solar neighbourhood III . Retrieved2010-01-27 . ^a b c Vallenari, 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 .^a b c Ghezzi, L.; et al. (September 2010), "Stellar Parameters and Metallicities of Stars Hosting Jovian and Neptunian Mass Planets: A Possible Dependence of Planetary Mass on Metallicity",The Astrophysical Journal ,720 (2):1290– 1302,arXiv :1007.2681 Bibcode :2010ApJ...720.1290G doi :10.1088/0004-637X/720/2/1290 ^a b Soto, M. G.; Jenkins, J. S. (July 2018)."Spectroscopic Parameters and atmosphEric ChemIstriEs of Stars (SPECIES). I. Code description and dwarf stars catalogue" .Astronomy & Astrophysics .615 : 28.arXiv :1801.09698 Bibcode :2018A&A...615A..76S doi :10.1051/0004-6361/201731533 ^a b c Tokovinin, A.; Kiyaeva, O. (February 2016)."Eccentricity distribution of wide binaries" .Monthly Notices of the Royal Astronomical Society .456 (2):2070– 2079.arXiv :1512.00278 Bibcode :2016MNRAS.456.2070T doi :10.1093/mnras/stv2825 ^ "HD 142" .SIMBAD Centre de données astronomiques de Strasbourg . Retrieved2020-08-12 .^ "HD 142B" .SIMBAD Centre de données astronomiques de Strasbourg . Retrieved2020-08-12 .^ Valenti, J. A.; Fischer, D. A. (2005)."Spectroscopic Properties of Cool Stars (SPOCS). I. 1040 F, G, and K Dwarfs from Keck, Lick, and AAT Planet Search Programs" .The Astrophysical Journal Supplement Series .159 (1):141– 166.Bibcode :2005ApJS..159..141V doi :10.1086/430500 ^ Raghavan, Deepak; et al. (2006)."Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems" .The Astrophysical Journal .646 (1):523– 542.arXiv :astro-ph/0603836 Bibcode :2006ApJ...646..523R doi :10.1086/504823 ^ "Astronomers close in on Solar System's 'siblings' (Press release). Marsfield, New South Wales, Australia:Australian Astronomical Observatory . October 15, 2001. Archived fromthe original on August 22, 2016. RetrievedJuly 10, 2016 .^ Tinney, C. G.; et al. (2002)."Two Extrasolar Planets from the Anglo-Australian Planet Search" .The Astrophysical Journal .571 (1):528– 531.arXiv :astro-ph/0111255 Bibcode :2002ApJ...571..528T doi :10.1086/339916 ^ Butler, R. P.; et al. (2006)."Catalog of Nearby Exoplanets" .The Astrophysical Journal .646 (1):505– 522.arXiv :astro-ph/0607493 Bibcode :2006ApJ...646..505B doi :10.1086/504701 ^ Wright, J. T.; et al. (2007)."Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars" .The Astrophysical Journal .657 (1):533– 545.arXiv :astro-ph/0611658 Bibcode :2007ApJ...657..533W doi :10.1086/510553 ^ Wittenmyer, Robert A.; et al. (2012)."The Anglo-Australian Planet Search. XXII. Two New Multi-planet Systems" .The Astrophysical Journal .753 (2). 169.arXiv :1205.2765 Bibcode :2012ApJ...753..169W doi :10.1088/0004-637X/753/2/169 ^ Wittenmyer, Robert A.; et al. (2020)."Cool Jupiters greatly outnumber their toasty siblings: occurrence rates from the Anglo-Australian Planet Search" .Monthly Notices of the Royal Astronomical Society .492 (1):377– 383.arXiv :1912.01821 Bibcode :2020MNRAS.492..377W .doi :10.1093/mnras/stz3436 ^a b Gaia Collaboration; et al. (2023). "Gaia Data Release 3".Astronomy & Astrophysics .674 : A34.arXiv :2206.05595 Bibcode :2023A&A...674A..34G .doi :10.1051/0004-6361/202243782 .S2CID 249626026 . ^a b Feng, Fabo; Butler, R. Paul; et al. (August 2022)."3D Selection of 167 Substellar Companions to Nearby Stars" .The Astrophysical Journal Supplement Series 262 (21): 21.arXiv :2208.12720 Bibcode :2022ApJS..262...21F .doi :10.3847/1538-4365/ac7e57 S2CID 251864022 . "HD 142" .Open Exoplanet Catalogue . Retrieved2014-09-08 .
