Phi Piscium, Latinized from φ Piscium, is a quadruple star[6] system approximately 380 light years away in the constellation Pisces. It consists of Phi Piscium A, with a spectral type of K0III, and Phi Piscium B.[5] Phi Piscium A possesses a surface temperature of 3,500 to 5,000 kelvins. Some suggest the only visible companion in the Phi Piscium B sub-system is a late F dwarf star, while others suggest it is a K0 star. The invisible component of the Phi Piscium B sub-system is proposed to have a spectral type of M2V.[7] The star system has a period of about 20½ years and has a notably high eccentricity of 0.815.[4]
^ abcdefghBrown, 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 at VizieR.
^ abMcWilliam, Andrew (December 1990), "High-resolution spectroscopic survey of 671 GK giants", Astrophysical Journal Supplement Series (PDF), 74: 1075–1128, Bibcode:1990ApJS...74.1075M, doi:10.1086/191527.
^ abRyon, Jenna; et al. (August 2009), "Comparing the Ca ii H and K Emission Lines in Red Giant Stars", Publications of the Astronomical Society of the Pacific, 121 (882): 842, arXiv:0907.3346, Bibcode:2009PASP..121..842R, doi:10.1086/605456, S2CID 17821279.
^ abGriffin, R. F.; Herbig, G. H. (1991). "Spectroscopic binary orbits from photoelectric radial velocities. Paper 99: Phi PISCIUM". The Observatory. 111: 155–162. Bibcode:1991Obs...111..155G.
^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.
^R.F. Griffin; G.H. Herbig (1991). "Spectroscopic binary orbits from photoelectric radial velocities. Paper 100: Phi PISCIUM B". The Observatory. 111: 201–219. Bibcode:1991Obs...111..201G.
^(in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 5 月 19 日
January 10, 2023
piscium, latinized, from, piscium, quadruple, star, system, approximately, light, years, away, constellation, pisces, consists, with, spectral, type, k0iii, possesses, surface, temperature, kelvins, some, suggest, only, visible, companion, system, late, dwarf,. Phi Piscium Latinized from f Piscium is a quadruple star 6 system approximately 380 light years away in the constellation Pisces It consists of Phi Piscium A with a spectral type of K0III and Phi Piscium B 5 Phi Piscium A possesses a surface temperature of 3 500 to 5 000 kelvins Some suggest the only visible companion in the Phi Piscium B sub system is a late F dwarf star while others suggest it is a K0 star The invisible component of the Phi Piscium B sub system is proposed to have a spectral type of M2V 7 The star system has a period of about 20 years and has a notably high eccentricity of 0 815 4 Phi PisciumLocation of f Piscium circled Observation dataEpoch J2000 0 Equinox J2000 0Constellation PiscesRight ascension 01h 13m 44 94617s 1 Declination 24 35 01 3249 1 Apparent magnitude V 4 676 A 9 11 B Characteristicsf Psc ASpectral type K0III 2 U B color index 0 B V color index 1 03f Psc BSpectral type K0U B color index 0 25B V color index 0 92AstrometryRadial velocity Rv 5 9 km sProper motion m RA 16 901 1 mas yr Dec 21 415 1 mas yrParallax p 8 1541 0 2028 mas 1 Distance400 10 ly 123 3 pc Absolute magnitude MV 0 67 3 Orbit 4 Companionf Psc BPeriod P 7473 3 d yrEccentricity e 0 815 0 005Argument of periastron w secondary 71 9 1 7 DetailsARadius23 63 0 66 1 36 1 R Luminosity249 6 7 1 1 L Surface gravity log g 2 75 2 cgsTemperature4 720 142 65 1 KMetallicity Fe H 0 08 3 dexOther designationsPhi Psc f Psc 85 Piscium BD 23 158 FK5 2082 GC 1474 HD 7318 HIP 5742 HR 360 SAO 74571 PPM 90580 CCDM J01137 2435A WDS J01137 2435A 5 Database referencesSIMBADdataNaming EditIn Chinese 奎宿 Kui Su meaning Legs asterism refers to an asterism consisting of refers to an asterism consisting of f Piscium h Andromedae 65 Piscium z Andromedae e Andromedae d Andromedae p Andromedae n Andromedae m Andromedae b Andromedae s Piscium t Piscium 91 Piscium y Piscium x Piscium and ps Piscium Consequently f Piscium itself is known as 奎宿十四 Kui Su shi si English the Fourteenth Star of Legs 8 References Edit a b c d e f g h Brown A G A et al Gaia collaboration August 2018 Gaia Data Release 2 Summary of the contents and survey properties Astronomy amp Astrophysics 616 A1 arXiv 1804 09365 Bibcode 2018A amp A 616A 1G doi 10 1051 0004 6361 201833051 Gaia DR2 record for this source at VizieR a b McWilliam Andrew December 1990 High resolution spectroscopic survey of 671 GK giants Astrophysical Journal Supplement Series PDF 74 1075 1128 Bibcode 1990ApJS 74 1075M doi 10 1086 191527 a b Ryon Jenna et al August 2009 Comparing the Ca ii H and K Emission Lines in Red Giant Stars Publications of the Astronomical Society of the Pacific 121 882 842 arXiv 0907 3346 Bibcode 2009PASP 121 842R doi 10 1086 605456 S2CID 17821279 a b Griffin R F Herbig G H 1991 Spectroscopic binary orbits from photoelectric radial velocities Paper 99 Phi PISCIUM The Observatory 111 155 162 Bibcode 1991Obs 111 155G a b phi Psc SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved October 1 2007 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 R F Griffin G H Herbig 1991 Spectroscopic binary orbits from photoelectric radial velocities Paper 100 Phi PISCIUM B The Observatory 111 201 219 Bibcode 1991Obs 111 201G in Chinese AEEA Activities of Exhibition and Education in Astronomy 天文教育資訊網 2006 年 5 月 19 日 Retrieved from https en wikipedia org w index php title Phi Piscium amp oldid 1117363220, wikipedia, wiki, book, books, library,
