Lambda Arietis (λ Ari, λ Arietis) is the Bayer designation for a double star in the northern constellation of Aries. Based upon an annual parallax shift of 25.32 arcseconds, this system is approximately 129 light-years (40 parsecs) distant from Earth. The pair have a combined apparent visual magnitude of 4.79,[2] which is bright enough to be viewed with the naked eye. Because the yellow secondary is nearly three magnitudes fainter than the white primary, they are a challenge to split with quality 7× binoculars and are readily resolvable at 10×.[8]
^ abcdevan Leeuwen, F. (November 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.
^ abcdJohnson, 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.
^Wilson, Ralph Elmer (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Washington: Carnegie Institution of Washington, Bibcode:1953GCRV..C......0W.
^ abcdefSoubiran, C.; Le Campion, J.-F.; Cayrel de Strobel, G.; Caillo, A. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics, 515: A111, arXiv:1004.1069, Bibcode:2010A&A...515A.111S, doi:10.1051/0004-6361/201014247, S2CID 118362423.
^Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics, 463 (2): 671–682, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224, S2CID 18475298.
lambda, arietis, arietis, bayer, designation, double, star, northern, constellation, aries, based, upon, annual, parallax, shift, arcseconds, this, system, approximately, light, years, parsecs, distant, from, earth, pair, have, combined, apparent, visual, magn. Lambda Arietis l Ari l Arietis is the Bayer designation for a double star in the northern constellation of Aries Based upon an annual parallax shift of 25 32 arcseconds this system is approximately 129 light years 40 parsecs distant from Earth The pair have a combined apparent visual magnitude of 4 79 2 which is bright enough to be viewed with the naked eye Because the yellow secondary is nearly three magnitudes fainter than the white primary they are a challenge to split with quality 7 binoculars and are readily resolvable at 10 8 l ArietisLocation of l Arietis circled Observation dataEpoch J2000 Equinox J2000Constellation AriesRight ascension 01h 57m 55 71647s 1 Declination 23 35 45 8295 1 Apparent magnitude V 4 79 2 4 95 7 75 3 CharacteristicsSpectral type F0 V G1 V 3 U B color index 0 09 2 B V color index 0 28 2 R I color index 0 16AstrometryRadial velocity Rv 1 4 4 km sProper motion m RA 92 55 1 mas yr Dec 13 25 1 mas yrParallax p 25 32 0 30 mas 1 Distance129 2 ly 39 5 0 5 pc Detailsl Ari ASurface gravity log g 3 88 5 cgsTemperature7 177 5 KMetallicity Fe H 0 01 5 dexRotational velocity v sin i 107 6 km sl Ari BSurface gravity log g 3 88 5 cgsTemperature5 929 5 KMetallicity Fe H 0 03 5 dexOther designations9 Arietis BD 22 288 HD 11973 HIP 9153 HR 569 SAO 75051 GC 2366 ADS 1563 CCDM 01580 2336 7 Database referencesSIMBADdataThe brighter component is an F type main sequence star with a visual magnitude of 4 95 and a stellar classification of F0 V 3 At an angular separation of 37 4 arcseconds is fainter magnitude 7 75 companion This is a G type main sequence star with a classification of G1 V 3 References Edit a b c d e van Leeuwen F November 2007 Validation of the new Hipparcos reduction Astronomy and Astrophysics 474 2 653 664 arXiv 0708 1752 Bibcode 2007A amp A 474 653V doi 10 1051 0004 6361 20078357 S2CID 18759600 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 a b c d 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 Wilson Ralph Elmer 1953 General Catalogue of Stellar Radial Velocities Carnegie Institute Washington D C Publication Washington Carnegie Institution of Washington Bibcode 1953GCRV C 0W a b c d e f Soubiran C Le Campion J F Cayrel de Strobel G Caillo A June 2010 The PASTEL catalogue of stellar parameters Astronomy and Astrophysics 515 A111 arXiv 1004 1069 Bibcode 2010A amp A 515A 111S doi 10 1051 0004 6361 201014247 S2CID 118362423 Royer F Zorec J Gomez A E February 2007 Rotational velocities of A type stars III Velocity distributions Astronomy and Astrophysics 463 2 671 682 arXiv astro ph 0610785 Bibcode 2007A amp A 463 671R doi 10 1051 0004 6361 20065224 S2CID 18475298 lam Ari SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 2012 08 07 a href Template Cite web html title Template Cite web cite web a CS1 maint postscript link Harrington Philip S 2010 Cosmic Challenge The Ultimate Observing List for Amateurs Cambridge University Press p 113 ISBN 978 0521899369References EditHR 569 Image Lambda Arietis Retrieved from https en wikipedia org w index php title Lambda Arietis amp oldid 1079511590, wikipedia, wiki, book, books, library,
