Light curves for the 1989 eclipse of Tau Persei, plotted from data published by Schmidtke and Hopkins (1990)[7]
Tau Persei is an eclipsing binary, which means the two stellar components orbit each other in such an orientation that they periodically eclipse each other, while blocking the other's light. Unlike many eclipsing binaries that have short orbital periods, Tau Persei has an orbital period of 4.15 years. With a semi-major axis of 0.055 arcseconds,[5] this is one of the few eclipsing binaries whose components can be resolved with interferometry.[8]
The primary component of Tau Persei is a red giant with a spectral type of G8III. It has a radius 16 times that of the Sun, and is about 390 million years old.[6] Its companion is an A-type main-sequence star. In 1989, the primary star eclipsed the secondary, allowing for the stellar parameters to be derived via its light curve.[3]
^ abcdefvan Leeuwen, F.; et al. (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.
^ abSamus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
^ abcdefghijklmnGriffin, R. E. M.; Schroder, K. P.; Misch, A.; Griffin, R. F. (1992). "Optical Spectra of Zeta-Aurigae Binary Systems - Part Three - the 1989 Eclipse of Tau-Persei". Astronomy and Astrophysics. 254: 289. Bibcode:1992A&A...254..289G.
^Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
^ ab"Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Retrieved 4 April 2017.
^ abcdefghMaldonado, J.; Villaver, E.; Eiroa, C. (2013). "The metallicity signature of evolved stars with planets". Astronomy & Astrophysics. 554: 2013. arXiv:1303.3418. Bibcode:2013A&A...554A..84M. doi:10.1051/0004-6361/201321082. S2CID 119289111.
^Schmidtke, Paul C.; Hopkins, Jeffrey L. (February 1990). "Photometry of the 1989 eclipse of τ Persei". Astrophysics and Space Science. 164 (2): 323–328. doi:10.1007/BF00658833. Retrieved 20 July 2022.
^McAlister, H. A. (1981). "Speckle interferometry of Tau Persei". The Astronomical Journal. 86: 1397. Bibcode:1981AJ.....86.1397M. doi:10.1086/113021.
^(in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 11 日
January 15, 2023
persei, also, known, persei, binary, star, constellation, perseus, system, fairly, close, located, about, light, years, parsecs, away, based, parallax, perseilocation, persei, circled, observation, dataepoch, j2000, equinox, j2000constellation, perseusright, a. Tau Persei t Per also known as 18 Persei is a binary star in the constellation of Perseus The system is fairly close and is located about 254 light years 78 parsecs away based on its parallax 1 t PerseiLocation of t Persei circled Observation dataEpoch J2000 Equinox J2000Constellation PerseusRight ascension 02h 45m 15 46108s 1 Declination 52 45 44 9240 1 Apparent magnitude V 3 94 4 07 2 CharacteristicsU B color index 0 46 3 B V color index 0 74 3 Variable type Algol 2 t Per ASpectral type G8 IIIa 3 U B color index 0 68 3 B V color index 0 91 3 t Per BSpectral type A3 4 V 3 U B color index 0 07 3 B V color index 0 15 3 AstrometryRadial velocity Rv 2 2 0 7 4 km sProper motion m RA 1 26 1 mas yr Dec 4 37 1 mas yrParallax p 12 83 0 36 mas 1 Distance254 7 ly 78 2 pc Absolute magnitude MV 0 65 3 0 45 1 26 3 Orbit 5 Period P 4 149 yrSemi major axis a 0 055Eccentricity e 0 728Inclination i 94 5 Longitude of the node W 100 6 Periastron epoch T B 2013 888Argument of periastron w secondary 54 1 Detailst Per AMass2 99 0 10 6 M Radius16 08 0 54 6 R Luminosity191 6 L Surface gravity log g 2 47 0 03 6 cgsTemperature5507 83 6 KMetallicity Fe H 0 20 0 03 6 dexAge0 39 0 05 6 Gyrt Per BMass1 8 3 M Radius2 2 3 R Temperature8970 150 3 KOther designations18 Per BD 52 641 HD 17878 HD 17879 HIP 13531 HR 854 SAO 23685Database referencesSIMBADdata Light curves for the 1989 eclipse of Tau Persei plotted from data published by Schmidtke and Hopkins 1990 7 Tau Persei is an eclipsing binary which means the two stellar components orbit each other in such an orientation that they periodically eclipse each other while blocking the other s light Unlike many eclipsing binaries that have short orbital periods Tau Persei has an orbital period of 4 15 years With a semi major axis of 0 055 arcseconds 5 this is one of the few eclipsing binaries whose components can be resolved with interferometry 8 The primary component of Tau Persei is a red giant with a spectral type of G8III It has a radius 16 times that of the Sun and is about 390 million years old 6 Its companion is an A type main sequence star In 1989 the primary star eclipsed the secondary allowing for the stellar parameters to be derived via its light curve 3 Naming EditIn Chinese 大陵 Da Ling meaning Mausoleum refers to an asterism consisting of t Persei 9 Persei i Persei k Persei b Persei r Persei 16 Persei and 12 Persei Consequently the Chinese name for t Persei itself is 大陵二 Da Ling er English the Second Star of Mausoleum 9 References Edit a b c d e f van Leeuwen F et al 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 Samus N N Durlevich O V et al 2009 VizieR Online Data Catalog General Catalogue of Variable Stars Samus 2007 2013 VizieR On line Data Catalog B GCVS Originally Published in 2009yCat 102025S 1 Bibcode 2009yCat 102025S a b c d e f g h i j k l m n Griffin R E M Schroder K P Misch A Griffin R F 1992 Optical Spectra of Zeta Aurigae Binary Systems Part Three the 1989 Eclipse of Tau Persei Astronomy and Astrophysics 254 289 Bibcode 1992A amp A 254 289G Gontcharov G A 2006 Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system Astronomy Letters 32 11 759 771 arXiv 1606 08053 Bibcode 2006AstL 32 759G doi 10 1134 S1063773706110065 S2CID 119231169 a b Sixth Catalog of Orbits of Visual Binary Stars United States Naval Observatory Retrieved 4 April 2017 a b c d e f g h Maldonado J Villaver E Eiroa C 2013 The metallicity signature of evolved stars with planets Astronomy amp Astrophysics 554 2013 arXiv 1303 3418 Bibcode 2013A amp A 554A 84M doi 10 1051 0004 6361 201321082 S2CID 119289111 Schmidtke Paul C Hopkins Jeffrey L February 1990 Photometry of the 1989 eclipse of t Persei Astrophysics and Space Science 164 2 323 328 doi 10 1007 BF00658833 Retrieved 20 July 2022 McAlister H A 1981 Speckle interferometry of Tau Persei The Astronomical Journal 86 1397 Bibcode 1981AJ 86 1397M doi 10 1086 113021 in Chinese AEEA Activities of Exhibition and Education in Astronomy 天文教育資訊網 2006 年 7 月 11 日 Retrieved from https en wikipedia org w index php title Tau Persei amp oldid 1099624382, wikipedia, wiki, book, books, library,
