オリオン座カイ2星とは - わかりやすく解説 Weblio辞書

オリオン座カイ2星

出典: フリー百科事典『ウィキペディア（Wikipedia）』 (2023/10/08 22:10 UTC 版)

オリオン座χ²星（オリオンざカイ2せい、χ² Orionis、χ² Ori）は、オリオン座の恒星である^[1]。見かけの等級は4.63と、肉眼で見える明るさである^[2]。ふたご座OB1アソシエーションに属するとみられる青色超巨星で、強力な恒星風を発している^[2]^[1]。はくちょう座α型に分類される変光星でもある^[3]。

脚注

注釈

^ 距離（光年）は、距離（パーセク）× 3.26 により計算。有効数字2桁。

出典

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^ ^a ^b ^c ^d Samus, N. N.; et al. (2009-01), “General Catalogue of Variable Stars”, VizieR On-line Data Catalog: B/gcvs, Bibcode: 2009yCat....102025S
^ ^a ^b ^c ^d ^e ^f “chi02 Ori -- Blue Supergiant”. SIMBAD. CDS. 2023年8月10日閲覧。
^ Underhill, Anne B. (1961), “Some spectroscopic observations of the supergiants 67 Ophiuchi, 55 Cygni and χ² Orionis”, Publications of the Dominion Astrophysical Observatory 11: 353-361, Bibcode: 1960PDAO...11..353U
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Crowther, P. A.; Lennon, D. J.; Walborn, N. R. (2006-01), “Physical parameters and wind properties of galactic early B supergiants”, Astronomy & Astrophysics 446: 279-293, Bibcode: 2006A&A...446..279C, doi:10.1051/0004-6361:20053685
^ Lamers, Henny J. G. L. M. (1981-04-15), “Mass loss from O and B stars”, Astrophysical Journal 245: 593-608, Bibcode: 1981ApJ...245..593L, doi:10.1086/158835
^ ^a ^b Walborn, Nolan R. (1976-04-15), “The OBN and OBC stars”, Astrophysical Journal 205: 419-425, Bibcode: 1976ApJ...205..419W, doi:10.1086/154292
^ ^a ^b ^c ^d ESA (1997), The HIPPARCOS and TYCHO catalogues. Astrometric and photometric star catalogues derived from the ESA HIPPARCOS Space Astrometry Mission, ESA SP Series, 1200, Noordwijk, Netherlands: ESA Publications Division, Bibcode: 1997ESASP1200.....E, ISBN 9290923997
^ Neckel, Th.; Klare, G. (1980-11), “The spatial distribution of the interstellar extinction”, Astronomy & Astrophysics Supplement Series 42: 251-281, Bibcode: 1980A&AS...42..251N
^ van Leeuwen, F. (2007-11), “Validation of the new Hipparcos reduction”, Astronomy & Astrophysics 474 (2): 653-664, Bibcode: 2007A&A...474..653V, doi:10.1051/0004-6361:20078357
^ Haucke, M.; et al. (2018-06), “Wind properties of variable B supergiants. Evidence of pulsations connected with mass-loss episodes”, Astronomy & Astrophysics 614: A91, Bibcode: 2018A&A...614A..91H, doi:10.1051/0004-6361/201731678
^ Kudritzki, R. P.; et al. (1999-10), “The wind momentum-luminosity relationship of galactic A- and B-supergiants”, Astronomy & Astrophysics 350: 970-984, Bibcode: 1999A&A...350..970K
^ Sapar, Lili; Sapar, Arved (1992), “A study of the IUE ultraviolet spectrum of χ² Orionis”, Baltic Astronomy 1: 461-513, Bibcode: 1992BaltA...1..461S, doi:10.1515/astro-1992-0406
^ Fuller, Wesley (1936-12-04), “Discovery of titanium in interstellar space”, Science 84 (2188): 8a-10a, https://www.jstor.org/stable/1663260
^ ^a ^b ^c ^d Sapar, Lili; Sapar, Arved (1994), “Stellar wind of χ² Ori from its resonance lines”, Baltic Astronomy 3: 266-281, Bibcode: 1994BaltA...3..266S, doi:10.1515/astro-1994-0308
^ Haucke, M.; et al. (2016-08), “What do we know about mass ejection in B Supergiant Stars?”, Boletín de la Asociación Argentina de Astronomía 58: 171-173, Bibcode: 2016BAAA...58..171H
^ ^a ^b Hutchings, J. B. (1970), “Expanding atmospheres in OB supergiants — IV. A mass-loss survey”, Monthly Notices of the Royal Astronomical Society 147: 161-176, Bibcode: 1970MNRAS.147..161H, doi:10.1093/mnras/147.2.161
^ Howarth, Ian D.; et al. (1997-01), “Cross-correlation characteristics of OB stars from IUE spectroscopy”, Monthly Notices of the Royal Astronomical Society 284 (2): 265-285, Bibcode: 1997MNRAS.284..265H, doi:10.1093/mnras/284.2.265
^ ^a ^b Morel, T.; et al. (2004-06), “Large-scale wind structures in OB supergiants: a search for rotationally modulated H_α variability”, Monthly Notices of the Royal Astronomical Society 351 (2): 552-568, Bibcode: 2004MNRAS.351..552M, doi:10.1111/j.1365-2966.2004.07799.x
^ Waelkens, C.; et al. (1998-02), “Study of an unbiased sample of B stars observed with Hipparcos: the discovery of a large amount of new slowly pulsating B stars”, Astronomy & Astrophysics 330: 215-221, Bibcode: 1998A&A...330..215W
^ Ridpath, Ian. “Orion The Hunter (continued)”. Star Tales. 2023年8月10日閲覧。
^ ^a ^b “中國古代的星象系統 (75)：觜宿天區” (中国語). AEEA 天文教育資訊網. 國立自然科學博物館 (2006年7月14日). 2023年8月10日閲覧。