Upsilon3Eridani
| Observation data EpochJ2000.0EquinoxJ2000.0(ICRS) | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 04h24m02.21725s[1] |
| Declination | −34° 01′ 00.6542″[1] |
| Apparent magnitude(V) | 3.96[2] |
| Characteristics | |
| Spectral type | K4 III[3] |
| U−Bcolor index | +1.80[2] |
| B−Vcolor index | +1.49[2] |
| Astrometry | |
| Radial velocity(Rv) | +24.1±0.7[4]km/s |
| Proper motion(μ) | RA:+73.77[1]mas/yr Dec.:+56.70[1]mas/yr |
| Parallax(π) | 11.01 ± 0.37mas[1] |
| Distance | 296 ± 10ly (91 ± 3pc) |
| Absolute magnitude(MV) | −0.82[5] |
| Details | |
| Radius | 54[6]R☉ |
| Luminosity | 426[7]L☉ |
| Surface gravity(logg) | 1.71[8]cgs |
| Temperature | 3,990[8]K |
| Metallicity[Fe/H] | −0.23[8]dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
Upsilon3Eridani(υ3Eridani,abbreviatedUpsilon3Eri,υ3Eri), officially namedBeemim/ˈbiːməm/,[10]is astarin theconstellationofEridanus.It is visible to the naked eye with anapparent visual magnitudeof 3.96[2]The distance to this star, based upon an annualparallax shiftof 11.01mas,[1]is around 296light-years.
This is anevolvedK-typegiant starwith astellar classificationof K4 III.[3]It has about 54[6]times theradius of the Sunand radiates 426[7]times thesolar luminosityfrom itsouter atmosphereat aneffective temperatureof 3,990 K.[8]
Nomenclature
[edit]υ3Eridani(LatinisedtoUpsilon3Eridani) is the star'sBayer designation.
This star bore the traditional nameBeemim(also renderedBeemin,TheemimandTheemin-- seeTheemin).[11][12]In 2016, theInternational Astronomical Unionorganized aWorking Group on Star Names(WGSN)[13]to catalog and standardize proper names for stars. The WGSN approved the nameBeemimfor this star on 30 June 2017 and it is now so included in the List of IAU-approved Star Names.[10]
InChinese,Thiên viên(Tiān Yuán), meaningCelestial Orchard,refers to anasterismconsisting of Upsilon3Eridani,Chi Eridani,Phi Eridani,Kappa Eridani,HD 16754,HD 23319,Theta Eridani,HD 24072,HD 24160,Upsilon4Eridani,Upsilon2EridaniandUpsilon1Eridani.[14]Consequently, theChinese namefor Upsilon3Eridani itself isThiên viên mười một(Tiān Yuán shíyī,English:the Eleventh Star of Celestial Orchard).[15]
References
[edit]- ^abcdefvan Leeuwen, F. (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,S2CID18759600.
- ^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.
- ^abHouk, N. (1982),Michigan Catalogue of Two-dimensional Spectral Types for the HD stars,vol. 3,Bibcode:1982mcts.book.....H.
- ^de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project",Astronomy & Astrophysics,546:14,arXiv:1208.3048,Bibcode:2012A&A...546A..61D,doi:10.1051/0004-6361/201219219,S2CID59451347,A61.
- ^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,S2CID119257644.
- ^abPasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics",Astronomy and Astrophysics,367(2): 521–524,arXiv:astro-ph/0012289,Bibcode:2001A&A...367..521P,doi:10.1051/0004-6361:20000451,S2CID425754.
- ^abMcDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars",Monthly Notices of the Royal Astronomical Society,427(1): 343–57,arXiv:1208.2037,Bibcode:2012MNRAS.427..343M,doi:10.1111/j.1365-2966.2012.21873.x,S2CID118665352.
- ^abcdSoubiran, C.; et al. (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,S2CID118362423.
- ^"d Eri".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2016-10-13.
- ^ab"Naming Stars".IAU.org.Retrieved16 December2017.
- ^Hough, Carole, ed. (2016),The Oxford Handbook of Names and Naming,Oxford University Press,p. 762,ISBN978-0191630422.
- ^Allen, Richard Hinckley (1963),Star Names, Their Lore and Meaning,Dover Publications Inc, p.220,ISBN0486210790
- ^"IAU Working Group on Star Names (WGSN)".Retrieved22 May2016.
- ^(in Chinese)Trung Quốc chòm sao thần thoại,written by trần lâu kim. Published by Đài Loan thư phòng xuất bản công ty hữu hạn, 2005,ISBN978-986-7332-25-7.
- ^(in Chinese)Hong Kong vũ trụ quán - nghiên cứu tài nguyên - lượng tinh trung anh đối chiếu biểuArchived2010-09-03 at theWayback Machine,Hong Kong Space Museum. Accessed on line November 23, 2010.
