It was also known to be part of a much bigger constellation named Telescopium Herschelii. It was also the constellation's second-brightest star before it was unrecognized by the International Astronomical Union (IAU).
^ abcdefvan Leeuwen, Floor (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752v1, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600. Note: see VizieR catalogue I/311.
^ 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.
^ abHerbig, George H.; Spalding, John F. Jr. (January 1955), "Axial Rotation and Line Broadening in Stars of Spectral Types F0-K5", Astrophysical Journal, 121: 118, Bibcode:1955ApJ...121..118H, doi:10.1086/145969.
^ abKidger, Mark R.; Martín-Luis, Fabiola (June 2003), "High-Precision Near-Infrared Photometry of a Large Sample of Bright Stars Visible from the Northern Hemisphere", The Astronomical Journal, 125 (6): 3311–3333, Bibcode:2003AJ....125.3311K, doi:10.1086/374996.
^ abFamaey, B.; et al. (January 2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics, 430 (1): 165–186, arXiv:astro-ph/0409579, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272, S2CID 17804304.
^ abLang, Kenneth R. (2006), Astrophysical formulae, Astronomy and astrophysics library, vol. 1 (3rd ed.), Birkhäuser, ISBN3-540-29692-1. The radius (R*) is given by:
^ abcdMcWilliam, Andrew (December 1990), "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances", Astrophysical Journal Supplement Series, 74: 1075–1128, Bibcode:1990ApJS...74.1075M, doi:10.1086/191527.
^De Medeiros, J. R.; et al. (November 2000), "Rotation and lithium in single giant stars", Astronomy and Astrophysics, 363: 239–243, arXiv:astro-ph/0010273, Bibcode:2000A&A...363..239D.
^Richichi, A.; Percheron, I.; Khristoforova, M. (February 2005), "CHARM2: An updated Catalog of High Angular Resolution Measurements", Astronomy and Astrophysics, 431 (2): 773–777, Bibcode:2005A&A...431..773R, doi:10.1051/0004-6361:20042039.
External linksedit
HR 2427
CCDM J06394+4229
Image Psi2 Aurigae
May 04, 2024
psi2, aurigae, other, stars, with, this, bayer, designation, aurigae, latinized, from, aurigae, star, constellation, auriga, faintly, visible, naked, with, apparent, visual, magnitude, based, upon, parallax, measurements, this, star, approximately, light, year. For other stars with this Bayer designation see ps Aurigae Psi2 Aurigae Latinized from ps2 Aurigae is a star in the constellation Auriga It is faintly visible to the naked eye with an apparent visual magnitude of 4 79 2 Based upon parallax measurements this star is approximately 420 light years 130 parsecs away from the Earth At that distance the brightness of the star is diminished by 0 07 in magnitude from extinction caused by interstellar gas and dust 5 Psi2 AurigaeLocation of ps2 Aurigae circled Observation dataEpoch J2000 Equinox J2000 Constellation Auriga Right ascension 06h 39m 19 82634s 1 Declination 42 29 19 9617 1 Apparent magnitude V 4 79 2 Characteristics Spectral type K3 III 3 or K3 Iab 4 U B color index 1 30 2 B V color index 1 23 2 R I color index 0 6 AstrometryRadial velocity Rv 16 09 0 19 5 km sProper motion m RA 0 87 1 mas yr Dec 54 97 1 mas yrParallax p 7 84 0 29 mas 1 Distance420 20 ly 128 5 pc Absolute magnitude MV 0 72 6 DetailsRadius27 7 R Luminosity304 6 L Surface gravity log g 2 30 8 cgsTemperature4 410 8 KMetallicity Fe H 0 10 8 dexRotational velocity v sin i 1 0 9 km s Other designationsps2 Aur 50 Aurigae BD 42 1585 HD 47174 HIP 31832 HR 2427 SAO 41239 10 Database referencesSIMBADdata Most studies categorized this as a K type giant star with a stellar classification of K3 III 3 However the results of a study published in 2003 list it with a classification of K3 Iab which would instead suggest it is a supergiant star 4 10 The measured angular diameter of this star after correction for limb darkening is 1 97 0 02 mas 11 At the estimated distance of this star 1 this yields a physical size of about 27 times the radius of the Sun 7 It is radiating 304 6 times the Sun s luminosity from its enlarged photosphere at an effective temperature of 4 410 K 8 It was also known to be part of a much bigger constellation named Telescopium Herschelii It was also the constellation s second brightest star before it was unrecognized by the International Astronomical Union IAU See also editPsi AurigaeReferences edit a b c d e f van Leeuwen Floor November 2007 Validation of the new Hipparcos reduction Astronomy and Astrophysics 474 2 653 664 arXiv 0708 1752v1 Bibcode 2007A amp A 474 653V doi 10 1051 0004 6361 20078357 S2CID 18759600 Note see VizieR catalogue I 311 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 Herbig George H Spalding John F Jr January 1955 Axial Rotation and Line Broadening in Stars of Spectral Types F0 K5 Astrophysical Journal 121 118 Bibcode 1955ApJ 121 118H doi 10 1086 145969 a b Kidger Mark R Martin Luis Fabiola June 2003 High Precision Near Infrared Photometry of a Large Sample of Bright Stars Visible from the Northern Hemisphere The Astronomical Journal 125 6 3311 3333 Bibcode 2003AJ 125 3311K doi 10 1086 374996 a b Famaey B et al January 2005 Local kinematics of K and M giants from CORAVEL Hipparcos Tycho 2 data Revisiting the concept of superclusters Astronomy and Astrophysics 430 1 165 186 arXiv astro ph 0409579 Bibcode 2005A amp A 430 165F doi 10 1051 0004 6361 20041272 S2CID 17804304 a b c 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 Lang Kenneth R 2006 Astrophysical formulae Astronomy and astrophysics library vol 1 3rd ed Birkhauser ISBN 3 540 29692 1 The radius R is given by 2 R 128 1 97 10 3 AU 0 0046491 AU R 54 R displaystyle begin aligned 2 cdot R amp frac 128 cdot 1 97 cdot 10 3 text AU 0 0046491 text AU R bigodot amp approx 54 cdot R bigodot end aligned nbsp a b c d McWilliam Andrew December 1990 High resolution spectroscopic survey of 671 GK giants I Stellar atmosphere parameters and abundances Astrophysical Journal Supplement Series 74 1075 1128 Bibcode 1990ApJS 74 1075M doi 10 1086 191527 De Medeiros J R et al November 2000 Rotation and lithium in single giant stars Astronomy and Astrophysics 363 239 243 arXiv astro ph 0010273 Bibcode 2000A amp A 363 239D a b 50 Aur SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 24 March 2016 Richichi A Percheron I Khristoforova M February 2005 CHARM2 An updated Catalog of High Angular Resolution Measurements Astronomy and Astrophysics 431 2 773 777 Bibcode 2005A amp A 431 773R doi 10 1051 0004 6361 20042039 External links editHR 2427 CCDM J06394 4229 Image Psi2 Aurigae Retrieved from https en wikipedia org w index php title Psi2 Aurigae amp oldid 1215915028, wikipedia, wiki, book, books, library,
