Star in the constellation Taurus
Delta3 Tauri (δ3 Tauri ) is abinary star [ 2] zodiac constellation ofTaurus . Based upon an annualparallax shift of 21.96 mas as seen from Earth,[ 1] light years distant from theSun . It is visible to the naked eye with a combinedapparent visual magnitude of +4.32.[ 2] 3 Tauri is separated from δ1 Tauri by 0.72° on the sky.[ 10] Cleeia ,[ 11] [ 12] Greek Kleeia (transliteration of Κλεεια),[ 13] Hyades sisters . It is considered a member of theHyades cluster .[ 5]
InChinese ,畢宿 Bì Xiù Net 3 Tauri,ε Tauri ,δ1 Tauri ,γ Tauri ,Aldebaran ,71 Tauri andλ Tauri .[ 14] Chinese name for δ3 Tauri itself is畢宿二 Bì Xiù èr [ 15]
The magnitude 4.35[ 2] A-type star intermediate betweenmain sequence andsubgiant , with astellar classification of A2 IV-Vs. The "s" indicates sharp (unusually narrow)absorption lines , a sign of slow rotation. It is a candidateblue straggler and shows characteristics of anAm star . Abt (1985) gave it a classification of A2kA3hA5m, indicating that thespectrum displays thecalcium K-line of an A2 star, thehydrogen lines of an A3 star and themetal lines of an A5 star. It is deficient in scandium but has enhancediron peak and heavy elements.[ 5] variability in the past,[ 16] 3 Tauri A was subsequently determined to bephotometrically constant.[ 17]
The companion, component B, is a magnitude 8.37[ 2] angular separation of 1.80 arc seconds along aposition angle of 341°, as of 2010. At 77arcseconds away (as of 2006) is a magnitude 11.12visual companion , designated component C.[ 18]
^a b c d e f van 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 ,S2CID 18759600 . ^a b c d e 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 . ^ Gray, R. O.; Garrison, R. F. (1987), "The Early A-Type Stars: Refined MK Classification, Confrontation with Stroemgren Photometry, and the Effects of Rotation",The Astrophysical Journal Supplement Series ,65 : 581,Bibcode :1987ApJS...65..581G ,doi :10.1086/191237 . ^ Eggen, Olin J. (July 1998), "The Age Range of Hyades Stars",The Astronomical Journal ,116 (1):284– 292,Bibcode :1998AJ....116..284E ,doi :10.1086/300413 ^a b c d e f g Gebran, M.; Vick, M.; Monier, R.; Fossati, L. (November 2010), "Chemical composition of A and F dwarfs members of the Hyades open cluster",Astronomy and Astrophysics ,523 : 13,arXiv :1006.5284 Bibcode :2010A&A...523A..71G ,doi :10.1051/0004-6361/200913273 ,S2CID 7164596 , A71. ^ Stassun, Keivan G.; et al. (2019), "The Revised TESS Input Catalog and Candidate Target List",The Astronomical Journal ,158 (4): 138,arXiv :1905.10694 Bibcode :2019AJ....158..138S ,doi :10.3847/1538-3881/ab3467 ^ Gáspár, András; Rieke, George H.; Ballering, Nicholas (2016), "The Correlation between Metallicity and Debris Disk Mass",The Astrophysical Journal ,826 (2): 171,arXiv :1604.07403 Bibcode :2016ApJ...826..171G ,doi :10.3847/0004-637X/826/2/171 ^ Bychkov, V. D.; Bychkova, L. V.; Madej, J. (2005), "A catalog of stellar magnetic rotational phase curves",Astronomy and Astrophysics ,430 (3): 1143,Bibcode :2005A&A...430.1143B ,doi :10.1051/0004-6361:20034563 . ^ De Rosa, R. J.; Patience, J.; Wilson, P. A.; Schneider, A.; Wiktorowicz, S. J.; Vigan, A.; Marois, C.; Song, I.; MacIntosh, B.; Graham, J. R.; Doyon, R.; Bessell, M. S.; Thomas, S.; Lai, O. (2014), "The VAST Survey - III. The multiplicity of A-type stars within 75 pc",Monthly Notices of the Royal Astronomical Society ,437 (2): 1216,arXiv :1311.7141 Bibcode :2014MNRAS.437.1216D ,doi :10.1093/mnras/stt1932 ^a b "del03 Tau" ,SIMBAD Centre de données astronomiques de Strasbourg , retrieved2017-08-07 .^ Falkner, David E. (2011),The Mythology of the Night Sky: An Amateur Astronomer's Guide to the Ancient Greek and Roman Legends Springer Science & Business Media , p. 36,ISBN 978-1461401377 ^ Bagnall, Philip M. (2012),The Star Atlas Companion: What you need to know about the Constellations Bibcode :2012sacw.book.....B ,ISBN 978-1461408307 ^ "Family of the Hyades" ,Theoi Greek Mythology , retrieved2017-08-08 .^ (in Chinese) 中國星座神話 , written by 陳久金. Published by 台灣書房出版有限公司, 2005,ISBN 978-986-7332-25-7 .^ (in Chinese) 香港太空館 - 研究資源 - 亮星中英對照表 Archived 2008-10-25 at theWayback Machine , Hong Kong Space Museum. Accessed on line November 23, 2010.^ Kholopov, P. N.; et al. (February 1981), "65th Name-List of Variable Stars",Information Bulletin on Variable Stars ,1921 : 1,Bibcode :1981IBVS.1921....1K . ^ Adelman, S. J. (June 1997), "On the possible variability of metallic-line and Mercury-Manganese stars",Astronomy & Astrophysics Supplement Series ,123 (3):445– 447,Bibcode :1997A&AS..123..445A ,doi :10.1051/aas:1997167 ^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog",The Astronomical Journal ,122 (6):3466– 3471,Bibcode :2001AJ....122.3466M ,doi :10.1086/323920
