NGC 6051
NGC 6051 | |
---|---|
![]() SDSS的NGC 6051影像 | |
觀測資料(J2000 曆元) | |
星座 | 巨蛇座 |
赤經 | 16h 04m 56.6s |
赤緯 | +23° 55′ 57.7″ |
紅移 | 0.031404 |
徑向速度 | 9,415 Km/s |
距離 | 453 Mly (138.8 Mpc) |
屬於 | AWM 4 |
視星等 (V) | 0.19 |
視星等 (B) | 0.26 |
特徵 | |
類型 | cD; E |
大小 | 250,000 ly (大約76.65 kpc) |
角直徑 (V) | 1.3' x 0.9' |
其他名稱 | |
PGC 57006、UGC 10178、4C +24.36、MCG +04-38-021, GIN 487 | |
NGC 6051是位於巨蛇座的一個巨大橢圓星系,距離地球4.53億光年,這意味著,考慮到其表觀尺寸,該星系的直徑約為250,000光年[1]。它是名為AWM 4的化石系統中一個鬆弛的貧窮星系團內最亮的團星系[2]。這個星系團由至少30個星系成員組成[3]。
觀測的歷史
[編輯]NGC 6051是讓·瑪里·愛德華·史提芬在1881年6月20日發現的。根據約翰·路易·埃米爾·德雷耳的說法,他將其描述為一個微弱的小圓形物體,中間有一個明亮的核,東南方有一顆10等的恆星[4]。SIMBAD和里昂-默登外星系資料庫(英語:Lyon-Meudon Extragalactic Database,HyperLEDA]]將NGC 6051登錄為IC 4588[5][6],但根據哈羅德·科溫的說法,這是兩個獨立的星系[7]。奧沙利文及其同事(2011)將它們視為獨立的實體,NGC 6051是星系團中心的主導星系[8]。
特徵
[編輯]NGC 6051是一個cD型星系[9]。與AWM 4中的其它星系相比,它的亮度要高得多[10],具有低面亮度輪廓[3],但沒有恆星包層[11]。
NGC 6051中的核心被認為是活躍星系,它是一個電波星系[12]。它被歸類為法納羅夫-萊利分類 I型和II型混合的過渡型。聚集著廣角尾的強力電波源[13][14],NGC 6051包含兩個反射對稱的擺動電波噴流和從其電波核心出現約80Kpc的巨大電波瓣[15]。對於這種活動星系核(AGN)活動,最被接受的理論是存在一個超大質量黑洞。基於MBH-MK相關性。NGC 6051中心黑洞的質量估計為9.57 ± 0.02 M⊙[16]。
根據射流與反射流的亮度比率,NGC 6051的中心約10kpc噴流區域可能更靠近天空平面。根據對逐漸變陡的光譜指數的分析,噴流和波瓣的壽命估計為1.6億年,這表明NGC 6051的來源很古老[15][13]。
一項研究在NGC 6051中心區域產生的夾帶氣體中發現了鐵的痕跡,其質量約為1.4 x 106 M⊙。當能量量為〜4.5 x 1057 erg時,氣體可能被星系的噴流從星系中輸送出來,在一定程度上豐富了星系團內介質[14]。
相關條目
[編輯]外部連結
[編輯]參考文獻
[編輯]- ^ NED Search Results for NGC 6051. ned.ipac.caltech.edu. [2024-09-07]. (原始內容存檔於2024-12-02).
- ^ Zibetti, Stefano; Pierini, Daniele; Pratt, Gabriel W. Are fossil groups a challenge of the cold dark matter paradigm?. Monthly Notices of the Royal Astronomical Society. 2009-01-11, 392 (2): 525–536. Bibcode:2009MNRAS.392..525Z. ISSN 0035-8711. arXiv:0809.2036
. doi:10.1111/j.1365-2966.2008.14098.x
.
- ^ 3.0 3.1 O'Sullivan, E.; Vrtilek, J. M.; Kempner, J. C.; David, L. P.; Houck, J. C. AWM 4 - an isothermal cluster observed with XMM-Newton. Monthly Notices of the Royal Astronomical Society. 2005-03-11, 357 (4): 1134–1150. Bibcode:2005MNRAS.357.1134O. ISSN 0035-8711. arXiv:astro-ph/0412430
. doi:10.1111/j.1365-2966.2005.08749.x
.
- ^ New General Catalog Objects: NGC 6050 - 6099. cseligman.com. [2024-09-07]. (原始內容存檔於2022-09-20).
- ^ NGC 6051. simbad.u-strasbg.fr. [2024-09-07]. (原始內容存檔於2025-02-24).
- ^ Hyperleda results for NGC 6051. archive.wikiwix.com. [2024-09-07]. (原始內容存檔於2025-02-24).
- ^ Corwin's description on IC 4588. www.darkerview.com. [2024-09-07]. (原始內容存檔於2025-02-24).
- ^ O'Sullivan, Ewan; et al. A deep Chandra observation of the poor cluster AWM 4 - II. The role of the radio jets in enriching the intracluster medium. Monthly Notices of the Royal Astronomical Society. March 2011, 411 (3): 1833–1842. Bibcode:2011MNRAS.411.1833O. arXiv:1010.0610
. doi:10.1111/j.1365-2966.2010.17812.x
.
- ^ Rebusco, P.; Churazov, E.; Bohringer, H.; Forman, W. Effect of turbulent diffusion on iron abundance profiles. Monthly Notices of the Royal Astronomical Society. 2006-11-11, 372 (4): 1840–1850. Bibcode:2006MNRAS.372.1840R. ISSN 0035-8711. arXiv:astro-ph/0608491
. doi:10.1111/j.1365-2966.2006.10977.x
.
- ^ Gastaldello, Fabio; Buote, David A.; Brighenti, Fabrizio; Mathews, William G.; Temi, Pasquale; Ettori, Stefano; Heinz, Sebastian; Wilcots, Eric. AGN Feedback in Galaxy Groups: The Two Interesting Cases of AWM 4 and NGC 5044. AIP Conference Proceedings (AIP). 2009, 1201: 237–240. Bibcode:2009AIPC.1201..237G. arXiv:0909.0600
. doi:10.1063/1.3293045.
- ^ Schombert, James M. The structure of brightest cluster members. II - Mergers. The Astrophysical Journal Supplement Series. August 1987, 64: 643. Bibcode:1987ApJS...64..643S. ISSN 0067-0049. doi:10.1086/191212.
- ^ Velzen, Sjoert van; Falcke, Heino; Schellart, Pim; Nierstenhöfer, Nils; Kampert, Karl-Heinz. Radio galaxies of the local universe - All-sky catalog, luminosity functions, and clustering. Astronomy & Astrophysics. 2012-08-01, 544: A18. Bibcode:2012A&A...544A..18V. ISSN 0004-6361. arXiv:1206.0031
. doi:10.1051/0004-6361/201219389.
- ^ 13.0 13.1 Giacintucci, Simona; Vrtilek, Jan M.; Murgia, Matteo; Raychaudhury, Somak; O'Sullivan, Ewan J.; Venturi, Tiziana; David, Laurence P.; Mazzotta, Pasquale; Clarke, Tracy E.; Athreya, Ramana M. A Giant Metrewave Radio Telescope Multifrequency Radio Study of the Isothermal Core of the Poor Galaxy Cluster AWM 4. The Astrophysical Journal. 2008-07-01, 682 (1): 186–198. Bibcode:2008ApJ...682..186G. ISSN 0004-637X. arXiv:0804.1906
. doi:10.1086/589280.
- ^ 14.0 14.1 O』Sullivan, Ewan; Giacintucci, Simona; David, Laurence P.; Vrtilek, Jan M.; Raychaudhury, Somak. A deep Chandra observation of the poor cluster AWM 4 - II. The role of the radio jets in enriching the intracluster medium. Monthly Notices of the Royal Astronomical Society. 2010-11-17, 411 (3): 1833–1842. Bibcode:2011MNRAS.411.1833O. ISSN 0035-8711. arXiv:1010.0610
. doi:10.1111/j.1365-2966.2010.17812.x
.
- ^ 15.0 15.1 Giacintucci, Simona; O』Sullivan, Ewan; Vrtilek, Jan; David, Laurence P.; Raychaudhury, Somak; Venturi, Tiziana; Athreya, Ramana M.; Clarke, Tracy E.; Murgia, Matteo; Mazzotta, Pasquale; Gitti, Myriam; Ponman, Trevor; Ishwara-Chandra, C. H.; Jones, Christine; Forman, William R. A COMBINED LOW-RADIO FREQUENCY/X-RAY STUDY OF GALAXY GROUPS. I. GIANT METREWAVE RADIO TELESCOPE OBSERVATIONS AT 235 MHz AND 610 MHz. The Astrophysical Journal. 2011-04-21, 732 (2): 95. Bibcode:2011ApJ...732...95G. ISSN 0004-637X. arXiv:1103.1364
. doi:10.1088/0004-637x/732/2/95.
- ^ Mezcua, M.; Hlavacek-Larrondo, J.; Lucey, J. R.; Hogan, M. T.; Edge, A. C.; McNamara, B. R. The most massive black holes on the Fundamental Plane of black hole accretion. Monthly Notices of the Royal Astronomical Society. 2017-10-30, 474 (1): 1342–1360. ISSN 0035-8711. arXiv:1710.10268
. doi:10.1093/mnras/stx2812
.