とかげ座EV星
出典: フリー百科事典『ウィキペディア（Wikipedia）』 (2019/10/22 14:25 UTC 版)
とかげ座EV星（とかげざEVせい、EV Lacertae、EV Lac）は、とかげ座の方向に約16.5光年の距離にある、暗い赤色矮星である。非常に近くにある恒星だが、見かけの等級は10等で、肉眼で見ることはできない。とかげ座EV星は閃光星で、フレアの際にX線やガンマ線も観測されている[6][12]。
注釈
![{\displaystyle \log g[{\mbox{cgs}}]=4.73}](http://weblio.hs.llnwd.net/e7/img/dict/wkpja/https://wikimedia.org/api/rest_v1/media/math/render/svg/7e4241033c4a45b97d7b8d24716c011bd5583d73)
出典
- ^ a b c “The Mouse That Roared: Pipsqueak Star Unleashes Monster Flare”. NASA (2008年5月19日). 2019年10月18日閲覧。
- ^ a b c 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 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 “EV Lac -- Flare Star”. SIMBAD. CDS. 2019年10月18日閲覧。
- ^ a b c Reid, I. Neill; Hawley, Suzanne L.; Gizis, John E. (1995-10), “The Palomar/MSU Nearby-Star Spectroscopic Survey. I. The Northern M Dwarfs -Bandstrengths and Kinematics”, Astronomical Journal 110: 1838-1859, Bibcode: 1995AJ....110.1838R, doi:10.1086/117655
- ^ a b c d e f g h Favata, F.; et al. (2000-01), “An extreme X-ray flare observed on EV Lac by ASCA in July 1998”, Astronomy & Astrophysics 353: 987-997, Bibcode: 2000A&A...353..987F
- ^ Sciortino, S.; et al. (1999-02), “X-ray spectroscopy of the active dM stars: AD Leo and EV Lac”, Astronomy & Astrophysics 342: 502-514, Bibcode: 1999A&A...342..502S
- ^ a b Johns-Krull, Christopher M.; Valenti, Jeff A. (1996-03), “Detection of Strong Magnetic Fields on M Dwarfs”, Astrophysical Journal Letters 459: L95-L98, Bibcode: 1996ApJ...459L..95J, doi:10.1086/309954
- ^ a b Pettersen, B. R.; Olah, K.; Sandmann, W. H. (1992-12), “Longterm behaviour of starspots. II. A decade of new starspots of photometry of BY Draconis and EV Lacertae”, Astronomy & Astrophysics Supplement Series 96: 497-504, Bibcode: 1992A&AS...96..497P
- ^ a b Huenemoerder, David P.; et al. (2010-11), “X-ray Flares of EV Lac: Statistics, Spectra, and Diagnostics”, Astrophysical Journal 723 (2): 1558-1567, Bibcode: 2010ApJ...723.1558H, doi:10.1088/0004-637X/723/2/1558
- ^ a b Rojas-Ayala, Bárbara; et al. (2012-04), “Metallicity and Temperature Indicators in M Dwarf K-band Spectra: Testing New and Updated Calibrations with Observations of 133 Solar Neighborhood M Dwarfs”, Astrophysical Journal 748 (2): 93, arXiv:1112.4567, Bibcode: 2012ApJ...748...93R, doi:10.1088/0004-637X/748/2/93
- ^ a b c d Osten, Rachel A.; et al. (2010-09), “The Mouse That Roared: A Superflare from the dMe Flare Star EV Lac Detected by Swift and Konus-Wind”, Astrophysical Journal 721 (1): 785-801, Bibcode: 2010ApJ...721..785O, doi:10.1088/0004-637X/721/1/785
- ^ Pettersen, B. R. (1980-07), “Starspots and the rotation of the flare star EV Lac”, Astronomical Journal 85: 871-874, Bibcode: 1980AJ.....85..871P, doi:10.1086/112750
- ^ a b Phan-Bao, Ngoc (2006-07), “Magnetic Fields in M Dwarfs: Rapid Magnetic Field Variability in EV Lacertae”, Astrophysical Journal 646 (1): L73-L76, arXiv:astro-ph/0603480, Bibcode: 2006ApJ...646L..73P, doi:10.1086/506591
- ^ Delfosse, X.; et al. (1998-03), “Rotation and chromospheric activity in field M dwarfs”, Astronomy & Astrophysics 331: 581-595, Bibcode: 1998A&A...331..581D
[続きの解説]
「とかげ座EV星」の続きの解説一覧
- 1 とかげ座EV星とは
- 2 とかげ座EV星の概要
- 3 特徴
- 4 関連項目
- とかげ座EV星のページへのリンク
