HD 172555とは - わかりやすく解説 Weblio辞書

HD 172555

出典: フリー百科事典『ウィキペディア（Wikipedia）』 (2023/12/09 21:09 UTC 版)

HD 172555あるいはHR 7012は、くじゃく座にある恒星である^[2]。見かけの等級は4.78と、肉眼でみえる明るさである^[3]^[9]。年周視差を基に太陽系からの距離を計算すると、約94光年である^[4]^{[注 1]}。がか座β運動星団（英語版）に属し、とても若い恒星である^[10]。やや離れた位置にある9等星CD -64°1208と連星をなし、CD -64°1208もまた2つの恒星からなるため、3重連星ではないかと考えられる^[11]^[12]^[13]。HD 172555の周囲には残骸円盤（英語版）が存在し、その観測的な特徴から、最近10万年以内に惑星級の天体同士の巨大衝突があり、大量の塵がばらまかれたのではないかと考えられている^[14]。また、HD 172555のスペクトルからは、太陽系外彗星の証拠とみられる成分もみつかっている^[15]。

脚注

注釈

^ ^a ^b ^c パーセクは1 ÷ 年周視差（秒）より計算、光年は1÷年周視差（秒）×3.2615638より計算
^ 視等級 + 5 + 5×log（年周視差（秒））より計算。小数第1位まで表記

出典

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^ ^a ^b “スピッツァーが見た、惑星どうしの衝突現場”. AstroArts (2009年8月18日). 2023年12月7日閲覧。
^ ^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
^ ^a ^b ^c ^d ^e ^f ^g “HD 172555 -- High Proper Motion Star”. SIMBAD. CDS. 2023年12月7日閲覧。
^ ^a ^b ^c Erspamer, D.; North, P. (2003-02), “Automated spectroscopic abundances of A and F-type stars using echelle spectrographs. II. Abundances of 140 A-F stars from ELODIE”, Astronomy & Astrophysics 398: 1121-1135, Bibcode: 2003A&A...398.1121E, doi:10.1051/0004-6361:20021711
^ ^a ^b ^c ^d ^e ^f ^g ^h Riviere-Marichalar, P.; et al. (2012-10), “HD 172555: detection of 63 μm [OI] emission in a debris disc”, Astronomy & Astrophysics 546: L8, Bibcode: 2012A&A...546L...8R, doi:10.1051/0004-6361/201219745
^ ^a ^b Gray, R. O.; et al. (2006-07), “Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc-The Southern Sample”, Astronomical Journal 132 (1): 161-170, Bibcode: 2006AJ....132..161G, doi:10.1086/504637
^ ^a ^b Mamajek, Eric E.; Bell, Cameron P. M. (2014-12), “On the age of the β Pictoris moving group”, Monthly Notices of the Royal Astronomical Society 445 (3): 2169-2180, Bibcode: 2014MNRAS.445.2169M, doi:10.1093/mnras/stu1894
^ ^a ^b Kiefer, F.; et al. (2023-03), “Hint of an exocomet transit in the CHEOPS light curve of HD 172555”, Astronomy & Astrophysics 671: A25, Bibcode: 2023A&A...671A..25K, doi:10.1051/0004-6361/202245104
^ ^a ^b ^c Zuckerman, B.; et al. (2001-11), “The β Pictoris Moving Group”, Astrophysical Journal 562 (1): L87-L90, Bibcode: 2001ApJ...562L..87Z, doi:10.1086/337968
^ ^a ^b Feigelson, E. D.; et al. (2006-03), “51 Eridani and GJ 3305: A 10-15 Myr old Binary Star System at 30 Parsecs”, Astronomical Journal 131 (3): 1730-1739, Bibcode: 2006AJ....131.1730F, doi:10.1086/499923
^ ^a ^b Biller, Beth A.; et al. (2007-11), “An Imaging Survey for Extrasolar Planets around 45 Close, Young Stars with the Simultaneous Differential Imager at the Very Large Telescope and MMT”, Astrophysical Journal Supplement Series 173 (1): 143-165, Bibcode: 2007ApJS..173..143B, doi:10.1086/519925
^ ^a ^b ^c ^d ^e Messina, S.; et al. (2017-04), “The β Pictoris association: Catalog of photometric rotational periods of low-mass members and candidate members”, Astronomy & Astrophysics 600: A83, Bibcode: 2017A&A...600A..83M, doi:10.1051/0004-6361/201629152
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Lisse, C. M.; et al. (2009-08), “Abundant Circumstellar Silica Dust and SiO Gas Created by a Giant Hypervelocity Collision in the ∼12 Myr HD172555 System”, Astrophysical Journal 701 (2): 2019-2032, Bibcode: 2009ApJ...701.2019L, doi:10.1088/0004-637X/701/2/2019
^ ^a ^b ^c Kiefer, F.; et al. (2014-01), “Exocomets in the circumstellar gas disk of HD 172555”, Astronomy & Astrophysics 561: L10, Bibcode: 2014A&A...561L..10K, doi:10.1051/0004-6361/201323128
^ ^a ^b ^c ^d ^e Alonso-Floriano, F. J.; et al. (2015-11), “Reaching the boundary between stellar kinematic groups and very wide binaries. III. Sixteen new stars and eight new wide systems in the β Pictoris moving group”, Astronomy & Astrophysics 583: A85, Bibcode: 2015A&A...583A..85A, doi:10.1051/0004-6361/201526795
^ “CD-64 1208 -- Spectroscopic Binary”. SIMBAD. CDS. 2023年12月7日閲覧。
^ McCarthy, Kyle; White, Russel J. (2012-06), “The Sizes of the Nearest Young Stars”, Astronomical Journal 143 (6): 134, Bibcode: 2012AJ....143..134M, doi:10.1088/0004-6256/143/6/134
^ Coté, J. (1987-07), “B and A type stars with unexpectedly large colour excesses at IRAS wavelengths”, Astronomy & Astrophysics 181: 77-84, Bibcode: 1987A&A...181...77C
^ Schütz, O.; Meeus, G.; Sterzik, M. F. (2005-02), “Mid-IR observations of circumstellar disks. II. Vega-type stars and a post-main sequence object”, Astronomy & Astrophysics 431: 175-182, Bibcode: 2005A&A...431..175S, doi:10.1051/0004-6361:20041490
^ Chen, C. H.; et al. (2006-09), “Spitzer IRS Spectroscopy of IRAS-discovered Debris Disks”, Astrophysical Journal 166 (1): 351-377, Bibcode: 2006ApJS..166..351C, doi:10.1086/505751
^ Johnson, B. C.; et al. (2012-12), “A Self-consistent Model of the Circumstellar Debris Created by a Giant Hypervelocity Impact in the HD 172555 System”, Astrophysical Journal 761 (1): 45, Bibcode: 2012ApJ...761...45J, doi:10.1088/0004-637X/761/1/45
^ “Planet Smash-Up Sends Vaporized Rock, Hot Lava Flying”. Spitzer Space Telescope. JPL-Caltech (2009年8月10日). 2023年12月7日閲覧。
^ ^a ^b Smith, R.; Wyatt, M. C.; Haniff, C. A. (2012-05), “Resolving the terrestrial planet forming regions of HD 113766 and HD 172555 with MIDI”, Monthly Notices of the Royal Astronomical Society 422 (3): 2560-2580, Bibcode: 2012MNRAS.422.2560S, doi:10.1111/j.1365-2966.2012.20816.x
^ ^a ^b ^c Engler, N.; et al. (2018-10), “Detection of scattered light from the hot dust in HD 172555”, Astronomy & Astrophysics 618: A151, Bibcode: 2018A&A...618A.151E, doi:10.1051/0004-6361/201832674
^ ^a ^b ^c Schneiderman, Tajana; et al. (2021-10), “Carbon monoxide gas produced by a giant impact in the inner region of a young system”, Nature 598 (7881): 425-428, arXiv:2110.15377, Bibcode: 2021Natur.598..425S, doi:10.1038/s41586-021-03872-x
^ Wilson, T. L.; et al. (2016-08), “Constraints on the Presence of SiO Gas in the Debris Disk of HD 172555”, Astrophysical Journal 826 (2): 165, Bibcode: 2016ApJ...826..165W, doi:10.3847/0004-637X/826/2/165
^ ^a ^b Grady, C.A.; et al. (2018-06), “The Star-grazing Bodies in the HD 172555 System”, Astronomical Journal 155 (6): 242, Bibcode: 2018AJ....155..242G, doi:10.3847/1538-3881/aabe74