NGC 4261

NGC 4261
NGC 4261
	An X-ray image of NGC 4261.
观测资料（J2000 曆元）
星座	室女座
赤经	12h 19m 23.21606s
赤纬	+05° 49′ 29.7000″
紅移	0.007465
徑向速度	2,238±7 km/s
距离	95.9 ± 8.5 Mly（29.4 ± 2.6 Mpc）
属于	NGC 4261星系群, 室女座星系團
视星等 (V)	12.87
视星等 (B)	13.92
特征
类型	E2
角直徑 (V)	4′.17 × 3′.39
其他名称
	NGC 4261, UGC 7360, PGC 39659
	參見：星系、星系列表

NGC 4261是一個橢圓星系^[8]，位於室女座，距離地球約1億光年^[9]。1784年4月13日，NGC 4261由德國出生的天文學家威廉·赫歇爾發現^[10]。NGC 4261是NGC 4261星系群的成員^[8]，該星系群是室女座星系團的一部分。

NGC 4261形態分類為E2，為長軸與短軸之比為5:4的橢圓星系^[5]。NGC 4261星系的恆星族群很古老，沒有任何跡象表明最近有合併或與其族群其他成員相互作用的跡象。星系的大尺度等通常呈四方形，沒有任何標記表明過去十億年內發生了破壞性的相互作用。沿著星系的南北軸有一條塵埃帶，核心周圍有一個塵埃盤。

天文學家在無線電波段可以觀察到NGC 4261從核心發射出的兩個突出的噴流。NGC 4261有一個活躍的星系核，其中有一個稍微偏離核心中心的超大質量黑洞^[11]。黑洞的質量估計為7039322145100000000♠(1.62±0.04)×10⁹ M_☉^[12] 。據估計，該星系的寬度約為6萬光年，從該星系噴出的噴流估計橫跨約8.8萬光年^[13]。

2001年1月1日，NGC 4261星系發現Ia 型超新星^[5]，位置為銀核以西3.1″、以北10.7″。2000年12月15日，超新星亮度達18.4等^[14]。

參考資料

^ ^1.0 ^1.1 Truebenbach, Alexandra E.; Darling, Jeremy. The VLBA Extragalactic Proper Motion Catalog and a Measurement of the Secular Aberration Drift. The Astrophysical Journal Supplement Series. November 2017, 233 (1): 16. Bibcode:2017ApJS..233....3T. S2CID 119200128. arXiv:1710.02099 . doi:10.3847/1538-4365/aa9026 . 3.
^ ^2.0 ^2.1 ^2.2 NASA/IPAC Extragalactic Database. Results for NGC 4261. [2007-03-30].
^ Jensen, Joseph B.; et al. Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations. Astrophysical Journal. February 2003, 583 (2): 712–726. Bibcode:2003ApJ...583..712J. S2CID 551714. arXiv:astro-ph/0210129 . doi:10.1086/345430.
^ ^4.0 ^4.1 Véron-Cetty, M.-P.; Véron, P. A catalogue of quasars and active nuclei. Astronomy & Astrophysics. 13th. 2010, 518. Bibcode:2010A&A...518A..10V. doi:10.1051/0004-6361/201014188 . A10.
^ ^5.0 ^5.1 ^5.2 van den Bergh, Sidney; et al. Classifications of the Host Galaxies of Supernovae. The Publications of the Astronomical Society of the Pacific. August 2002, 114 (798): 820–825. Bibcode:2002PASP..114..820V. S2CID 46679854. arXiv:astro-ph/0204298 . doi:10.1086/341709.
^ Paturel, G.; et al. HYPERLEDA. I. Identification and designation of galaxies. Astronomy and Astrophysics. December 2003, 412: 45–55. Bibcode:2003A&A...412...45P. doi:10.1051/0004-6361:20031411 .
^ NGC 4261. SIMBAD. 斯特拉斯堡天文資料中心.
^ ^8.0 ^8.1 Davis, David S.; et al. Diffuse hot gas in the NGC 4261 group of galaxies (PDF). Astrophysical Journal. 1995, 444 (2): 582–589. Bibcode:1995ApJ...444..582D. doi:10.1086/175632.
^ Massive Black Holes Dwell in Most Galaxies, According to Hubble Census. Hubblesite STScI-1997-01. 1997-01-13 [2024-09-05].
^ Seligman, Courtney. New General Catalogue objects: NGC 4250 - 4299. cseligman.com. [2020-09-19].
^ Hubble Finds a New Black Hole – and Unexpected New Mysteries. Hubblesite STScI-1995-47. 1995-12-04 [2024-09-05].
^ Ruffa, Ilaria; Davis, Timothy A.; Cappellari, Michele; ((Bureau)), Martin; Elford, Jacob; Iguchi, Satoru; Lelli, Federico; Liang, Fu-Heng; Liu, Lijie; Lu, Anan; Sarzi, Marc; Williams, Thomas G. WISDOM project – XIV. SMBH mass in the early-type galaxies NGC 0612, NGC 1574, and NGC 4261 from CO dynamical modelling. Monthly Notices of the Royal Astronomical Society. 2023, 522 (4): 6170–6195. Bibcode:2023MNRAS.522.6170R. arXiv:2304.06117 . doi:10.1093/mnras/stad1119 .
^ The Giant Elliptical Galaxy NGC 4261. Astronomy 162 (Dept. Physics & Astronomy University of Tennessee). [2010-05-02]. ^{[失效連結]}
^ Modjaz, M.; et al. Green, D. W. E. , 编. Supernova 2001A in NGC 4261. IAU Circular. January 2001, 7554: 2. Bibcode:2001IAUC.7554....2M.

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外部連結

Animation of the black hole in the center of NGC 4261

[Truebenbach2017-1] 1.0 ^1.1 Truebenbach, Alexandra E.; Darling, Jeremy. The VLBA Extragalactic Proper Motion Catalog and a Measurement of the Secular Aberration Drift. The Astrophysical Journal Supplement Series. November 2017, 233 (1): 16. Bibcode:2017ApJS..233....3T. S2CID 119200128. arXiv:1710.02099 . doi:10.3847/1538-4365/aa9026 . 3.

[ned-2] 2.0 ^2.1 ^2.2 NASA/IPAC Extragalactic Database. Results for NGC 4261. [2007-03-30].

[jensenetal2003-3] Jensen, Joseph B.; et al. Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations. Astrophysical Journal. February 2003, 583 (2): 712–726. Bibcode:2003ApJ...583..712J. S2CID 551714. arXiv:astro-ph/0210129 . doi:10.1086/345430.

[Véron-Cetty2010-4] 4.0 ^4.1 Véron-Cetty, M.-P.; Véron, P. A catalogue of quasars and active nuclei. Astronomy & Astrophysics. 13th. 2010, 518. Bibcode:2010A&A...518A..10V. doi:10.1051/0004-6361/201014188 . A10.

[vanDenBergh2002-5] 5.0 ^5.1 ^5.2 van den Bergh, Sidney; et al. Classifications of the Host Galaxies of Supernovae. The Publications of the Astronomical Society of the Pacific. August 2002, 114 (798): 820–825. Bibcode:2002PASP..114..820V. S2CID 46679854. arXiv:astro-ph/0204298 . doi:10.1086/341709.

[Paturel2003-6] Paturel, G.; et al. HYPERLEDA. I. Identification and designation of galaxies. Astronomy and Astrophysics. December 2003, 412: 45–55. Bibcode:2003A&A...412...45P. doi:10.1051/0004-6361:20031411 .

[SIMBAD-7] NGC 4261. SIMBAD. 斯特拉斯堡天文資料中心.

[Davis1995-8] 8.0 ^8.1 Davis, David S.; et al. Diffuse hot gas in the NGC 4261 group of galaxies (PDF). Astrophysical Journal. 1995, 444 (2): 582–589. Bibcode:1995ApJ...444..582D. doi:10.1086/175632.

[STScI-1997-01-9] Massive Black Holes Dwell in Most Galaxies, According to Hubble Census. Hubblesite STScI-1997-01. 1997-01-13 [2024-09-05].

[cseligman-10] Seligman, Courtney. New General Catalogue objects: NGC 4250 - 4299. cseligman.com. [2020-09-19].

[STScI-1995-47-11] Hubble Finds a New Black Hole – and Unexpected New Mysteries. Hubblesite STScI-1995-47. 1995-12-04 [2024-09-05].

[Ruffa-12] Ruffa, Ilaria; Davis, Timothy A.; Cappellari, Michele; ((Bureau)), Martin; Elford, Jacob; Iguchi, Satoru; Lelli, Federico; Liang, Fu-Heng; Liu, Lijie; Lu, Anan; Sarzi, Marc; Williams, Thomas G. WISDOM project – XIV. SMBH mass in the early-type galaxies NGC 0612, NGC 1574, and NGC 4261 from CO dynamical modelling. Monthly Notices of the Royal Astronomical Society. 2023, 522 (4): 6170–6195. Bibcode:2023MNRAS.522.6170R. arXiv:2304.06117 . doi:10.1093/mnras/stad1119 .

[astro162-13] The Giant Elliptical Galaxy NGC 4261. Astronomy 162 (Dept. Physics & Astronomy University of Tennessee). [2010-05-02]. ^{[失效連結]}

[Modjaz2001-14] Modjaz, M.; et al. Green, D. W. E. , 编. Supernova 2001A in NGC 4261. IAU Circular. January 2001, 7554: 2. Bibcode:2001IAUC.7554....2M.

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NGC 4261

參考資料

外部連結

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