IC 2574

IC 2574，也被稱為「柯丁頓星雲」（Coddington Nebula），是一個大熊座矮螺旋星系，由美國天文學家埃德溫·福斯特·柯丁頓於1898年發現^[8][9]，是M81星系團的外圍成員。天文學家認為該星系質量的90%以暗物質的形式存在^[10]，目前未發現IC 2574與其他星系相互作用的證據。 IC 2574目前正在形成恆星，紫外線分析顯示恆星形成的區域大小為85至500光年^[11]。

IC 2574
Picture of IC 2574 produced with Hubble's Advanced Camera for Surveys
觀測資料（J2000 曆元）
星座	大熊座
赤經	10h 28m 23.62046s[1]
赤緯	+68° 24′ 43.4414″[1]
紅移	6996160000000000000♠0.000160±0.000020[2]
距離	12.8 Mly（3.93 Mpc）[3]
特徵
類型	SABm[4]
角直徑 (V)	12.02′ × 5.50′[5]
其他名稱
Coddington's Nebula,[6] UGC 5666[7]
參見：星系、星系列表

參考資料

1. Brown, A. G. A.; Vallenari, A.; Prusti, T.; de Bruijne, J. H. J.; et al. Gaia Data Release 2. Summary of the contents and survey properties. Astronomy & Astrophysics. 2018. Bibcode:2018A&A...616A...1G. arXiv:1804.09365 . doi:10.1051/0004-6361/201833051. VizieR中此天體在蓋亞望遠鏡第二批數據發佈的記錄
2. Paturel, G.; et al. Comparison LEDA/SIMBAD octobre 2002. Catalogue to be published in 2003. LEDA. 2002. Bibcode:2002LEDA.........0P.
3. Karachentsev, Igor D.; et al. The Local Tully-Fisher Relation for Dwarf Galaxies. The Astronomical Journal. January 2017, 153 (1): 17. Bibcode:2017AJ....153....6K. S2CID 119388974. arXiv:1611.02574 . doi:10.3847/1538-3881/153/1/6. 6.
4. Khramtsova, M. S.; et al. Polycyclic aromatic hydrocarbons in spatially resolved extragalactic star-forming complexes. Monthly Notices of the Royal Astronomical Society. May 2013, 431 (2): 2006–2016. Bibcode:2013MNRAS.431.2006K. arXiv:1302.4837 . doi:10.1093/mnras/stt319.
5. 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 .
6. APOD: 2012 June 22 – IC 2574: Coddington's Nebula. apod.nasa.gov. [2020-01-16]. （原始內容存檔於2018-03-03）.
7. IC 2574. SIMBAD. 斯特拉斯堡天文資料中心.
8. Some of The Named Galaxies. iitk.ac.in/. Indian Institute of Technology Kanpur. [2018-11-06]. （原始內容存檔於2012-01-04）.
9. Walter, Fabian; Brinks, Elias. Holes and Shells in the Interstellar Medium of the Nearby Dwarf Galaxy IC 2574. The Astronomical Journal (Institute of Physics). 1999, 118 (1): 273–301. Bibcode:1999AJ....118..273W. S2CID 14572518. arXiv:astro-ph/9904002 . doi:10.1086/300906.
10. Darling, David. Coddington's Nebula (IC 2574). Worlds of David Darling. [2019-01-16]. （原始內容存檔於2022-11-17）.
11. Mondal, Chayan; Subramaniam, Annapurni; George, Koshy. A tale of two nearby dwarf irregular galaxies WLM and IC 2574: As revealed by UVIT. Journal of Astrophysics and Astronomy. 2021, 42 (2): 50. Bibcode:2021JApA...42...50M. S2CID 235212077. arXiv:2105.13048 . doi:10.1007/s12036-021-09761-z.