Ниже приведены списки крупнейших известных на данный момент звезд, упорядоченные по радиусу и разделенные на категории по галактикам. Единицей измерения является радиус Солнца (приблизительно 695 700 км ; 432 300 миль ). [1]
Обзор
Хотя красные сверхгиганты часто считаются самыми большими звездами, некоторые другие типы звезд, как было обнаружено, временно значительно увеличивают свой радиус, например, во время извержений LBV или светящихся красных новых . Светящиеся красные новые, по-видимому, расширяются чрезвычайно быстро, достигая тысяч или десятков тысяч солнечных радиусов всего за несколько месяцев, что значительно больше, чем у самых больших красных сверхгигантов. [2]
Некоторые исследования используют модели, которые предсказывают, что высокоаккрецирующие сверхмассивные звезды (SMS) Популяции III или Популяции I в очень ранней Вселенной могли бы развиться в «красных сверхгигантских протозвезд». Считается, что эти протозвезды имеют темпы аккреции, превышающие темпы сжатия, что приводит к более низким температурам, но с радиусами, достигающими многих десятков тысяч R ☉ , что сопоставимо с некоторыми из крупнейших известных черных дыр . [3] [4] [5]
Угловые диаметры
Угловые диаметры звезд можно измерить напрямую с помощью звездной интерферометрии . Другие методы могут использовать лунные покрытия или затменные двойные , которые можно использовать для проверки косвенных методов нахождения звездных радиусов. Только несколько сверхгигантов могут быть закрыты Луной, включая Антарес и 119 Тельца . Примерами затменных двойных являются Эпсилон Возничего (Алмааз), VV Цефея и V766 Центавра (HR 5171). Измерения углового диаметра могут быть непоследовательными, поскольку граница очень разреженной атмосферы ( непрозрачность ) отличается в зависимости от длины волны света, в которой наблюдается звезда . [ необходима цитата ]
Неопределенности остаются с составом и порядком списков, особенно при выводе различных параметров, используемых в расчетах, таких как звездная светимость и эффективная температура . Часто звездные радиусы могут быть выражены только как среднее значение или находиться в большом диапазоне значений. Значения звездных радиусов значительно различаются в разных источниках и для разных методов наблюдения. [ необходима цитата ]
Все размеры, указанные в этих списках, имеют неточности и могут быть оспорены. Списки все еще находятся в стадии разработки, и параметры могут измениться.
Предостережения
Существуют различные проблемы с определением точных радиусов крупнейших звезд, которые во многих случаях показывают значительные ошибки. Следующие списки, как правило, основаны на различных соображениях или предположениях; они включают:
Звездные расстояния и их погрешности для большинства звезд остаются неопределенными или плохо определенными.
Многие протяженные атмосферы сверхгигантов также значительно меняют свои размеры с течением времени, регулярно или нерегулярно пульсируя в течение нескольких месяцев или лет как переменные звезды . Это делает принятые светимости плохо известными и может значительно изменить указанные радиусы.
Другие прямые методы определения радиусов звезд основаны на лунных покрытиях или затмениях в двойных системах. Это возможно только для очень небольшого числа звезд.
Многие оценки расстояний до красных сверхгигантов основаны на членстве в звездных скоплениях или ассоциациях, поскольку трудно рассчитать точные расстояния для красных сверхгигантов, которые не являются частью какого-либо скопления или ассоциации.
В этих списках есть несколько примеров чрезвычайно далеких внегалактических звезд, которые могут иметь несколько иные свойства и природу, чем в настоящее время крупнейшие известные звезды в Млечном Пути . Например, предполагается, что некоторые красные сверхгиганты в Магеллановых Облаках имеют несколько иные предельные температуры и светимости . Такие звезды могут превышать принятые пределы, подвергаясь крупным извержениям или меняя свои спектральные типы всего за несколько месяцев (или потенциально лет). [6] [7]
Списки
В следующих списках показаны самые крупные известные звезды в зависимости от родительской галактики.
Млечный Путь
Магеллановы Облака
Галактики Андромеды (M31) и Треугольника (M33)
Другие галактики (внутри Местной группы)
За пределами Местной группы (внутри сверхскопления Девы)
За пределами сверхскопления Девы
Обратите внимание, что в этот список не включены кандидаты на роль темных звезд JWST с предполагаемыми радиусами до 61 астрономической единицы (13 000 R ☉ ) [138] или квазизвезды , теоретические модели которых предполагают, что они могут достигать радиусов до 40 700 солнечных радиусов (189 а.е.) [139] .
Переходные события
Во время некоторых кратковременных событий, таких как вспышки красных новых или извержения LBV, радиус звезды может значительно увеличиваться.
SN Progenitors
Largest stars by apparent size
The following list include the largest stars by their apparent size (angular diameter) as seen from Earth. The unit of measurement is the milliarcsecond (mas), equivalent to 10×10−3arcseconds. Stars with angular diameters larger than 13milliarcseconds are included.
^Mamajek, E. E.; Prsa, A.; Torres, G.; Harmanec, P.; Asplund, M.; Bennett, P. D.; Capitaine, N.; Christensen-Dalsgaard, J.; Depagne, E.; Folkner, W. M.; Haberreiter, M. (October 2015). "IAU 2015 Resolution B3 on Recommended Nominal Conversion Constants for Selected Solar and Planetary Properties". arXiv:1510.07674 [astro-ph.SR].
^Rau, A.; Kulkarni, S. R.; Ofek, E. O.; Yan, L. (2007). "Spitzer Observations of the New Luminous Red Nova M85 OT2006-1". The Astrophysical Journal. 659 (2): 1536–1540. arXiv:astro-ph/0612161. Bibcode:2007ApJ...659.1536R. doi:10.1086/512672. S2CID 8913778.
^Haemmerlé, Lionel; Woods, T. E.; Klessen, Ralf S.; Heger, Alexander; Whalen, Daniel J. (2018). "The evolution of supermassive Population III stars". Monthly Notices of the Royal Astronomical Society. 474 (2): 2757–2773. arXiv:1705.09301. doi:10.1093/mnras/stx2919.
^Herrington, Nicholas P.; Whalen, Daniel J.; Woods, Tyrone E. (2023). "Modelling supermassive primordial stars with <SCP>mesa</SCP>". Monthly Notices of the Royal Astronomical Society. 521: 463–473. arXiv:2208.00008. doi:10.1093/mnras/stad572.
^Haemmerlé, L.; Klessen, R. S.; Mayer, L.; Zwick, L. (2021). "Maximum accretion rate of supermassive stars". Astronomy & Astrophysics. 652: L7. arXiv:2105.13373. Bibcode:2021A&A...652L...7H. doi:10.1051/0004-6361/202141376. S2CID 235247984.
^Levesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Meynet, Georges; Maeder, Andre (July 2006). "The Effective Temperatures and Physical Properties of Magellanic Cloud Red Supergiants: The Effects of Metallicity". The Astrophysical Journal. 645 (2): 1102–1117. arXiv:astro-ph/0603596. Bibcode:2006ApJ...645.1102L. doi:10.1086/504417. ISSN 0004-637X. S2CID 5150686.
^Ren, Yi; Jiang, Bi-Wei (July 2020). "On the Granulation and Irregular Variation of Red Supergiants". The Astrophysical Journal. 898 (1): 24. arXiv:2006.06605. Bibcode:2020ApJ...898...24R. doi:10.3847/1538-4357/ab9c17. ISSN 0004-637X. S2CID 250739134.
^ a b c d e f"HORIZONS Web-Interface". ssd.jpl.nasa.gov. Retrieved 25 September 2021.
^ a b c d e f g h i j k l m n o p q rLevesque, Emily M.; Massey, Philip; Plez, Bertrand; Olsen, Knut A. G. (2009). "The Physical Properties of the Red Supergiant WOH G64: The Largest Star Known?". The Astronomical Journal. 137 (6): 4744. arXiv:0903.2260. Bibcode:2009AJ....137.4744L. doi:10.1088/0004-6256/137/6/4744. S2CID 18074349.
^ a b c d e f g h i j k l m n o p q r sde Wit, S.; Bonanos, A.Z.; Tramper, F.; Yang, M.; Maravelias, G.; Boutsia, K.; Britavskiy, N.; Zapartas, E. (2023). "Properties of luminous red supergiant stars in the Magellanic Clouds". Astronomy and Astrophysics. 669: 17. arXiv:2209.11239. Bibcode:2023A&A...669A..86D. doi:10.1051/0004-6361/202243394. S2CID 252519285.
^ a b c d e f g h i j k lLevesque, E. M. (June 2010). The Physical Properties of Red Supergiants. Hot and Cool: Bridging Gaps in Massive Star Evolution ASP Conference Series. Vol. 425. p. 103. arXiv:0911.4720. Bibcode:2010ASPC..425..103L. S2CID 8921166.
^ a b c d e f g h i j kBeasor, Emma R.; Smith, Nathan (1 May 2022). "The Extreme Scarcity of Dust-enshrouded Red Supergiants: Consequences for Producing Stripped Stars via Winds". The Astrophysical Journal. 933 (1): 41. arXiv:2205.02207. Bibcode:2022ApJ...933...41B. doi:10.3847/1538-4357/ac6dcf. S2CID 248512934.
^ a b c d e fSteven R. Goldman; Jacco Th. van Loon (2016). "The wind speeds, dust content, and mass-loss rates of evolved AGB and RSG stars at varying metallicity". Monthly Notices of the Royal Astronomical Society. 465 (1): 403–433. arXiv:1610.05761. Bibcode:2017MNRAS.465..403G. doi:10.1093/mnras/stw2708. S2CID 11352637.
^ a b c d e fJones, Olivia; Woods, Paul; Kemper, Franziska; Kraemer, Elena; Sloan, G.; Srinivasan, Sivakrishnan; Oliveira, Joana; van Loon, Jacco; Boyer, Martha; Sargent, Benjamin; Mc Donald, I.; Meixner, Margaret; Zijlstra, A.; Ruffel, Paul; Lagadec, Eric; Pauly, Tyler (7 May 2017). "The SAGE-Spec Spitzer Legacy program: the life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification – III". Monthly Notices of the Royal Astronomical Society. 470 (3): 3250–3282. arXiv:1705.02709. doi:10.1093/mnras/stx1101. Retrieved 23 June 2022.
^ a b c d e f g hLevesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric; Maeder, Andre; Meynet, Georges (August 2005). "The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not As Cool As We Thought". The Astrophysical Journal. 628 (2): 973–985. arXiv:astro-ph/0504337. Bibcode:2005ApJ...628..973L. doi:10.1086/430901. ISSN 0004-637X. S2CID 15109583.
^El-Badry, Kareem (22 April 2024). "On the formation of a 33 solar-mass black hole in a low-metallicity binary". The Open Journal of Astrophysics. 7: 38. arXiv:2404.13047. Bibcode:2024OJAp....7E..38E. doi:10.33232/001c.117652.
^ a b c d e f g h i j k l m n o p q r s t u vHumphreys, Roberta M.; Helmel, Greta; Jones, Terry J.; Gordon, Michael S. (August 2020). "Exploring the Mass Loss Histories of the Red Supergiants". The Astronomical Journal. 160 (3): 145. arXiv:2008.01108. Bibcode:2020AJ....160..145H. doi:10.3847/1538-3881/abab15. S2CID 220961677.
^ a bWittkowski, M.; Hauschildt, P. H.; Arroyo-Torres, B.; Marcaide, J. M. (April 2012). "Fundamental properties and atmospheric structure of the red supergiant VY Canis Majoris based on VLTI/AMBER spectro-interferometry". Astronomy and Astrophysics. 540: L12. arXiv:1203.5194. Bibcode:2012A&A...540L..12W. doi:10.1051/0004-6361/201219126. ISSN 0004-6361. S2CID 54044968.
^ a bAlcolea, J.; Bujarrabal, V.; Planesas, P.; Teyssier, D.; Cernicharo, J.; De Beck, E.; Decin, L.; Dominik, C.; Justtanont, K.; de Koter, A.; Marston, A. P.; Melnick, G.; Menten, K. M.; Neufeld, D. A.; Olofsson, H.; Schmidt, M.; Schöier, F. L.; Szczerba, R.; Waters, L. B. F. M. (November 2013). "HIFISTARS Herschel/HIFI observations of VY Canis Majoris. Molecular-line inventory of the envelope around the largest known star". Astronomy & Astrophysics. 559: 25. arXiv:1310.2400. Bibcode:2013A&A...559A..93A. doi:10.1051/0004-6361/201321683. ISSN 0004-6361. S2CID 263787323.
^Gordon, Michael S.; Jones, Terry J.; Humphreys, Roberta M.; Ertel, Steve; Hinz, Philip M.; Hoffman, William F.; Stone, Jordan; Spalding, Eckhart; Vaz, Amali (February 2019). "Thermal Emission in the Southwest Clump of VY CMa". The Astronomical Journal. 157 (2): 57. arXiv:1811.05998. Bibcode:2019AJ....157...57G. doi:10.3847/1538-3881/aaf5cb. S2CID 119044678.
^Nguyen, Thinh H.; Guinan, Edward F. (11 January 2022). "Stars on the Verge: Analyses of the Complex Light Variations of the Hyper-luminous Red Supergiant VY Canis Majoris: On the Nature of the Star's "Great Dimming" Episodes". Research Notes of the AAS. 6 (1): 12. Bibcode:2022RNAAS...6...12N. doi:10.3847/2515-5172/ac4991. ISSN 2515-5172.
^ a bArroyo-Torres, B.; Wittkowski, M.; Marcaide, J. M.; Hauschildt, P. H. (June 2013). "The atmospheric structure and fundamental parameters of the red supergiants AH Scorpii, UY Scuti, and KW Sagittarii". Astronomy and Astrophysics. 554: A76. arXiv:1305.6179. Bibcode:2013A&A...554A..76A. doi:10.1051/0004-6361/201220920. ISSN 0004-6361. S2CID 73575062.
^ a b c d e f g hMontargès, M.; et al. (5 January 2023). "The VLT/SPHERE view of the ATOMIUM cool evolved star sample. I. Overview: Sample characterization through polarization analysis". Astronomy and Astrophysics. 671: A96. arXiv:2301.02081. Bibcode:2023A&A...671A..96M. doi:10.1051/0004-6361/202245398. S2CID 255440600.
^ a b c d e f gNorris, Ryan Patrick (13 December 2019). Seeing stars like never before: A long-term interferometric imaging survey of red supergiants. Physics and Astronomy Dissertations (Thesis). Georgia State University. Bibcode:2019PhDT........63N. doi:10.57709/15009706.
^ a bTabernero, H. M.; Dorda, R.; Negueruela, I.; Marfil, E. (February 2021). "The nature of VX Sagitarii: Is it a TŻO, a RSG, or a high-mass AGB star?". Astronomy & Astrophysics. 646: A98. arXiv:2011.09184. Bibcode:2021A&A...646A..98T. doi:10.1051/0004-6361/202039236. ISSN 0004-6361. S2CID 241206934.
^ a b c d eWing, Robert F. (September 2009). The Biggest Stars of All. The Biggest, Baddest, Coolest Stars ASP Conference Series. Vol. 412. p. 113. Bibcode:2009ASPC..412..113W. S2CID 117001990.
^ a bRichichi, A.; Percheron, I.; Khristoforova, M. (1 February 2005). "CHARM2: An updated Catalog of High Angular Resolution Measurements". Astronomy & Astrophysics. 431 (2): 773–777. Bibcode:2005A&A...431..773R. doi:10.1051/0004-6361:20042039. ISSN 0004-6361. Data about NML Cygni (IRC +40448) is found here at VizieR.
^Zhang, B.; Reid, M. J.; Menten, K. M.; Zheng, X. W.; Brunthaler, A. (2012). "The distance and size of the red hypergiant NML Cygni from VLBA and VLA astrometry" (PDF). Astronomy & Astrophysics. 544: A42. arXiv:1207.1850. Bibcode:2012A&A...544A..42Z. doi:10.1051/0004-6361/201219587. S2CID 55509287.
^Fok, Thomas K. T.; Nakashima, Jun-ichi; Yung, Bosco H. K.; Hsia, Chih-Hao; Deguchi, Shuji (November 2012). "Maser Observations of Westerlund 1 and Comprehensive Considerations on Maser Properties of Red Supergiants Associated with Massive Clusters". The Astrophysical Journal. 760 (1): 65. arXiv:1209.6427. Bibcode:2012ApJ...760...65F. doi:10.1088/0004-637X/760/1/65. ISSN 0004-637X. S2CID 53393926.
^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bcHealy, Sarah; Horiuchi, Shunsaku; Molla, Marta Colomer; Milisavljevic, Dan; Tseng, Jeff; Bergin, Faith; Weil, Kathryn; Tanaka, Masaomi (23 March 2024). "Red Supergiant Candidates for Multimessenger Monitoring of the Next Galactic Supernova". Monthly Notices of the Royal Astronomical Society. 529 (4): 3630–3650. arXiv:2307.08785. Bibcode:2024MNRAS.529.3630H. doi:10.1093/mnras/stae738. ISSN 0035-8711.
^Josselin, E.; Plez, B. (July 2007). "Atmospheric dynamics and the mass loss process in red supergiant stars". Astronomy & Astrophysics. 469 (2): 671–680. arXiv:0705.0266. Bibcode:2007A&A...469..671J. doi:10.1051/0004-6361:20066353. ISSN 0004-6361. S2CID 17789027.
^"Mu Cephei | aavso". www.aavso.org. Retrieved 6 October 2024.
^Kusuno, K.; Asaki, Y.; Imai, H.; Oyama, T. (2013). "Distance and Proper Motion Measurement of the Red Supergiant, Pz Cas, in Very Long Baseline Interferometry H2O Maser Astrometry". The Astrophysical Journal. 774 (2): 107. arXiv:1308.3580. Bibcode:2013ApJ...774..107K. doi:10.1088/0004-637X/774/2/107. S2CID 118867155.
^ a b c d eRyan Norris. "Student Science at NMT: Learning Optical Interferometry Through Projects on Evolved Stars" (PDF). CHARA.
^ a b c dArévalo, Aura de Las Estrellas Ramírez (July 2018). The Red Supergiants in the Supermassive Stellar Cluster Westerlund 1 (text thesis). University of São Paulo. doi:10.11606/D.14.2019.tde-12092018-161841.
^Gvaramadze, V. V.; Menten, K. M.; Kniazev, A. Y.; Langer, N.; Mackey, J.; Kraus, A.; Meyer, D. M. -A.; Kamiński, T. (January 2014). "IRC −10414: a bow-shock-producing red supergiant star". Monthly Notices of the Royal Astronomical Society. 437 (1): 843–856. arXiv:1310.2245. Bibcode:2014MNRAS.437..843G. doi:10.1093/mnras/stt1943. ISSN 0035-8711.
^ a b c d e f g h i j kVallenari, A.; Brown, A. G. A.; Prusti, T. (13 June 2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. 674. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. hdl:10902/30704. ISSN 0004-6361. S2CID 244398875.
^Tsuboi, Masato; Kitamura, Yoshimi; Tsutsumi, Takahiro; Miyawaki, Ryosuke; Miyoshi, Makoto; Miyazaki, Atsushi (April 2020). "Sub-millimeter detection of a Galactic center cool star IRS 7 by ALMA". Publications of the Astronomical Society of Japan. 72 (2): 36. arXiv:2002.01620. Bibcode:2020PASJ...72...36T. doi:10.1093/pasj/psaa013. ISSN 0004-6264.
^Guerço, Rafael; Smith, Verne V; Cunha, Katia; Ekström, Sylvia; Abia, Carlos; Plez, Bertrand; Meynet, Georges; Ramirez, Solange V; Prantzos, Nikos; Sellgren, Kris; Hayes, Cristian R; Majewski, Steven R (13 September 2022). "Evidence of deep mixing in IRS 7, a cool massive supergiant member of the Galactic nuclear star cluster". Monthly Notices of the Royal Astronomical Society. 516 (2): 2801–2811. arXiv:2208.10529. doi:10.1093/mnras/stac2393. ISSN 0035-8711.
^Rodríguez-Coira, G.; Gravity Collaboration (2021). "The Molecular Layer of GCIRS7". New Horizons in Galactic Center Astronomy and Beyond. 528: 397. Bibcode:2021ASPC..528..397R.
^Van Loon, J. Th.; Cioni, M.-R. L.; Zijlstra, A. A.; Loup, C. (18 April 2005). "An empirical formula for the mass-loss rates of dust-enshrouded red supergiants and oxygen-rich Asymptotic Giant Branch stars". Astronomy and Astrophysics. 438 (1): 273–289. arXiv:astro-ph/0504379. Bibcode:2005A&A...438..273V. doi:10.1051/0004-6361:20042555. S2CID 16724272.
^Norris, Ryan (27 February 2021). "An Interferometric Imaging Survey of Red Supergiant Stars". The 20.5Th Cambridge Workshop on Cool Stars: 263. Bibcode:2021csss.confE.263N. doi:10.5281/zenodo.4567641.
^ a bAnugu, Narsireddy; Gies, Douglas R.; Roettenbacher, Rachael M.; Monnier, John D.; Montargés, Miguel; Mérand, Antoine; Baron, Fabien; Schaefer, Gail H.; Shepard, Katherine A.; Kraus, Stefan; Anderson, Matthew D.; Codron, Isabelle; Gardner, Tyler; Gutierrez, Mayra; Köhler, Rainer (September 2024). "Time Evolution Images of the Hypergiant RW Cephei during the Rebrightening Phase Following the Great Dimming". The Astrophysical Journal Letters. 973 (1): L5. arXiv:2408.11906. Bibcode:2024ApJ...973L...5A. doi:10.3847/2041-8213/ad736c. ISSN 2041-8205.
^Davies, B.; Figer, D. F.; Law, C. J.; Kudritzki, R. P.; Najarro, F.; Herrero, A.; MacKenty, J. W. (2008). "The Cool Supergiant Population of the Massive Young Star Cluster RSGC1". The Astrophysical Journal. 676 (2): 1016–1028. arXiv:0711.4757. Bibcode:2008ApJ...676.1016D. doi:10.1086/527350. S2CID 15639297.
^Decin, Leen; Richards, Anita M. S.; Marchant, Pablo; Sana, Hugues (2024). "ALMA detection of CO rotational line emission in red supergiant stars of the massive young star cluster RSGC1". Astronomy & Astrophysics. 681: A17. arXiv:2303.09385. doi:10.1051/0004-6361/202244635.
^Massalkhi, S.; Agúndez, M.; Cernicharo, J. (August 2019). "Study of CS, SiO, and SiS abundances in carbon star envelopes: assessing their role as gas-phase precursors of dust". Astronomy & Astrophysics. 628: A62. arXiv:1906.09461. Bibcode:2019A&A...628A..62M. doi:10.1051/0004-6361/201935069. ISSN 0004-6361. PMC 6739229. PMID 31511746.
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External links
Giant Stars An interactive website comparing the Earth and the Sun to some of the largest known stars
Three largest stars identified BBC News
What is the Biggest Star in the Universe? Universe Today