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Dwarf galaxy

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685: 288: 142: 654: 3356: 3131: 665: 20: 3143: 3406: 3394: 65: 3382: 453:, amongst others. In particular, an unprecedentedly large sample of ~ 100 UCDs has been found in the core region of the Virgo cluster by the Next Generation Virgo Cluster Survey team. The first ever relatively robust studies of the global properties of Virgo UCDs suggest that UCDs have distinct dynamical and structural properties from normal globular clusters. An extreme example of UCD is 213: 3418: 56:, which closely orbits the Milky Way and contains over 30 billion stars, is sometimes classified as a dwarf galaxy; others consider it a full-fledged galaxy. Dwarf galaxies' formation and activity are thought to be heavily influenced by interactions with larger galaxies. Astronomers identify numerous types of dwarf galaxies, based on their shape and composition. 2125:
Sandoval, Michael A.; Vo, Richard P.; Romanowsky, Aaron J.; Strader, Jay; Choi, Jieun; Jennings, Zachary G.; Conroy, Charlie; Brodie, Jean P.; Foster, Caroline; Villaume, Alexa; Norris, Mark A.; Janz, Joachim; Forbes, Duncan A. (23 July 2015). "Hiding in Plain Sight: Record-breaking Compact Stellar
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galaxies (UCD) are a class of very compact galaxies with very high stellar densities, discovered in the 2000s. They are thought to be on the order of 200 light years across, containing about 100 million stars. It is theorised that these are the cores of nucleated dwarf elliptical galaxies that have
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What makes M60-UCD1 so remarkable is that about half of this mass is found within a radius of only about 80 light years. The density of stars is about 15,000 times greater—meaning the stars are about 25 times closer to each other—than in Earth's region of the
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Ahn, C. P.; Seth, A. C.; den Brok, M.; Strader, J.; Baumgardt, H.; van den Bosch, R.; Chilingarian, I.; Frank, M.; Hilker, M.; McDermid, R.; Mieske, S.; Romanowsky, A. J.; Spitler, L.; Brodie, J.; Neumayer, N.; Walsh, J. L. (2017).
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Willman, Beth; Dalcanton, Julianne J.; Martinez-Delgado, David; West, Andrew A.; Blanton, Michael R.; Hogg, David W.; Barentine, J. C.; Brewington, Howard J.; Harvanek, Michael; Kleinman, S. J.; Krzesinski, Jurek (20 June 2005).
338:. The galaxies' stars are all formed at different time periods, so the galaxies have time to cool and to build up matter to form new stars. As time passes, this star formation changes the shape of the galaxies. 841: 1653:
Hilker, M.; Infante, L.; Vieira, G.; Kissler-Patig, M.; Richtler, T. (1999). "The central region of the Fornax cluster. II. Spectroscopy and radial velocities of member and background galaxies".
417:. Recent theoretical work has hypothesised the existence of a population of young UFDs that form at a much later time than the ancient UFDs. These galaxies have not been observed in our 1708:
Drinkwater, M. J.; Jones, J. B.; Gregg, M. D.; Phillipps, S. (2000). "Compact Stellar Systems in the Fornax Cluster: Super-massive Star Clusters or Extremely Compact Dwarf Galaxies?".
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Willman, Beth; Blanton, Michael R.; West, Andrew A.; Dalcanton, Julianne J.; Hogg, David W.; Schneider, Donald P.; Wherry, Nicholas; Yanny, Brian; Brinkmann, Jon (June 2005).
331:. Because they are composed of star clusters, BCD galaxies lack a uniform shape. They consume gas intensely, which causes their stars to become very violent when forming. 1851:
Mieske; Infante; Benitez; Coe; Blakeslee; Zekser; Ford; Broadhurst; et al. (2004). "Ultra Compact Dwarf galaxies in Abell 1689: a photometric study with the ACS".
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of approximately −14.6. This makes M59-UCD3 the second densest known galaxy. Based on stellar orbital velocities, two UCD in the Virgo Cluster are claimed to have
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Zhang, Hong-Xin; et al. (March 2015). "The Next Generation Virgo Cluster Survey. VI: The Kinematics of Ultracompact Dwarfs and Globular Clusters in M87".
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López-Sånchez, Á. R.; Koribalski, B.; van Eymeren, J.; Esteban, C.; Popping, A.; Hibbard, J. (2010). "The environment of nearby Blue Compact Dwarf Galaxies".
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Liu, Chengze; et al. (November 2015). "The Next Generation Virgo Cluster Survey. X: Properties of Ultracompact Dwarfs in The M87, M49 and M60 Regions".
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Noyola, E.; Gebhardt, K.; Bergmann, M. (2008). "Gemini and Hubble Space Telescope Evidence for an Intermediate-Mass Black Hole in ω Centauri".
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during the early evolutions of the Milky Way and Andromeda. Tidal dwarf galaxies are produced when galaxies collide and their gravitational
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More than 20 known dwarf galaxies orbit the Milky Way, and recent observations have also led astronomers to believe the largest
1906: 1238: 409:, as all UFDs discovered so far are ancient systems that have likely formed very early on, only a few million years after the 1655: 390:
and are more extended. UFDs were first discovered with the advent of digital sky surveys in 2005, in particular with the
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Meurer, G. R.; Mackie, G.; Carignan, C. (1994). "Optical observations of NGC 2915: A nearby blue compact dwarf galaxy".
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Strader, Jay; Seth, Anil C.; Forbes, Duncan A.; Fabbiano, Giuseppina; et al. (August 2013). "The Densest Galaxy".
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that surround them. A 2018 study suggests that some local dwarf galaxies formed extremely early, during the
3305: 3174: 1261:"New insights to the photometric structure of Blue Compact Dwarf Galaxies from deep Near-Infrared Studies" 244: 149:
is a dwarf irregular galaxy, featuring younger stars in its inner regions and older ones at its outskirts.
3254: 3222: 2968: 845: 386:(GCs) in appearance but have very different properties. Unlike GCs, UFDs contain a significant amount of 1326: 3372: 3086: 3041: 2908: 2849: 2438: 2433: 2406: 2339: 2687: 2767: 2128: 1016: 474: 85: 2990: 3051: 2963: 2958: 2864: 2760: 2718: 2428: 2401: 1853: 1290: 1105: 711: 616: 496: 478: 391: 1522: 1267: 3438: 3167: 3046: 3031: 3010: 2978: 2637: 2625: 2620: 2534: 2499: 2470: 2460: 812: 234: 228: 126: 2549: 2448: 2324: 1150: 1077: 879: 621: 541: 53: 24: 1809: 3359: 3232: 3111: 3076: 2973: 2675: 2188: 1987: 1932: 1814: 1765: 1245: 1200: 1146: 1073: 875: 601: 551: 182: 1678: 1352: 3336: 3106: 3056: 2891: 2803: 2539: 2423: 2359: 2207: 2147: 2061: 2006: 1951: 1872: 1833: 1729: 1674: 1609: 1544: 1479: 1414: 1348: 1299: 1219: 1114: 1035: 926: 546: 287: 1523:"Pre-Reionization Fossils, Ultra-Faint Dwarfs, and the Missing Galactic Satellite Problem" 1172: 8: 3398: 3290: 2869: 2777: 2708: 2615: 2600: 2475: 636: 254: 177:. Streams of galactic material are pulled away from the parent galaxies and the halos of 111: 76:
One theory states that most galaxies, including dwarf galaxies, form in association with
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Because of their small size, dwarf galaxies have been observed being pulled toward and
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Smith, Deborah (29 May 2003). "Star search finds millions masquerading as one".
1652: 3285: 2859: 2692: 2595: 2590: 2544: 2487: 2264: 2220: 2183: 1622: 1587: 506: 491: 442: 335: 197: 871: 437:, travelling through the hearts of rich clusters. UCDs have been found in the 3432: 3341: 3326: 3015: 2881: 2844: 2578: 2566: 2418: 2413: 1774: 1631: 1564: 1499: 1434: 1368: 817: 586: 438: 434: 250: 237:(dSph): Once a subtype of dwarf ellipticals, now regarded as a distinct type 170: 146: 130: 122: 108: 2180: 1810:"Galaxies and Overmerging: What Does it Take to Destroy a Satellite Galaxy?" 962: 3422: 3300: 3237: 3217: 2913: 2854: 2839: 2670: 736: 626: 521: 501: 450: 414: 312: 1686: 653: 3321: 3264: 3259: 3193: 2928: 2818: 2808: 2605: 2571: 2511: 2391: 1867: 1828: 1724: 1669: 1474: 1409: 1197: 921: 531: 526: 516: 511: 398: 387: 178: 154: 92: 88: 77: 2312: 3331: 2813: 2750: 1807: 716: 446: 402: 201: 664: 169:. A 2007 paper has suggested that many dwarf galaxies were created by 19: 2823: 2110: 646: 611: 300: 158: 157:; these small galaxies frequently orbit larger galaxies, such as the 49: 28: 1741: 1389: 2202: 2142: 2001: 1946: 1884: 1604: 1491: 1426: 1343: 1311: 1127: 1100: 1047: 581: 571: 566: 561: 556: 458: 454: 418: 410: 406: 379: 354: 350: 346: 342: 186: 100: 96: 69: 3159: 2056: 1586:
Benitez-Llambay, Alejandro; Fumagalli, Michele (1 November 2021).
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Schombert, J.M.; Pildis, R.A.; Eder, J.A.; Oelmer, A. Jr. (1995).
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is a galaxy known as an irregular blue compact dwarf (BCD) galaxy.
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at its centre, which was at some time absorbed by the Milky Way.
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believe that UFDs encode valuable information about the early
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identified new dwarf galaxies forming out of gases with low
708: â€“ System for categorizing galaxies based on appearance 212: 3190: 2344: 2124: 1455: 375: 320: 316: 81: 45: 3417: 323:
in colour. Most BCD galaxies are also classified as dwarf
2039: 1098: 1585: 963:"New Recipe for Dwarf Galaxies: Start with Leftover Gas" 903:"Dwarf-spheroidal satellites: are they of tidal origin?" 842:"Pictures: New Proof Spiral Galaxies Eat, Digest Dwarfs" 813:"New Recipe For Dwarf Galaxies: Start With Leftover Gas" 374:
that contain from a few hundred to one hundred thousand
1850: 2098:. Phys.org (Omicron Technology Ltd). 24 September 2013 1013: 3370: 1711:
Publications of the Astronomical Society of Australia
1258: 1173:"WISE Discovers Baby Galaxies in the Nearby Universe" 719: â€“ Possible type of luminous blue compact galaxy 1808:
Stelios Kazantzidis; Ben Moore; Lucio Mayer (2004).
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Small galaxy composed of up to several billion stars
1521:Bovill, Mia S.; Ricotti, Massimo (10 March 2009). 990:"Earliest galaxies found 'on our cosmic doorstep'" 461:is approximately the same size as M60-UCD1 with a 1588:"The Tail of Late-forming Dwarf Galaxies in ΛCDM" 1259:Noeske, K.; Papaderos, P.; Cairos, L. M. (2003). 1092: 908:Monthly Notices of the Royal Astronomical Society 3430: 2745: 2096:"Evidence for densest galaxy in nearby universe" 266: 1801: 762:"The Magellanic Clouds, our galactic neighbors" 200:, is in fact the core of a dwarf galaxy with a 2465: 1701: 481:weighing 13% and 18% of the galaxies' masses. 280: 3175: 3001:List of the most distant astronomical objects 2360: 1520: 660:is located about 14 million light-years away. 360: 80:, or from gas that contains metals. However, 44:composed of about 1000 up to several billion 1789:Astronomers discover dozens of mini-galaxies 1393:"A New Milky Way Dwarf Galaxy in Ursa Major" 1331:Annual Review of Astronomy and Astrophysics 433:been stripped of gas and outlying stars by 378:, making them the faintest galaxies in the 3182: 3168: 2367: 2353: 2126:Systems in the Sloan Digital Sky Survey". 1907:"The Next Generation Virgo Cluster Survey" 1646: 1143:"An intriguing young-looking dwarf galaxy" 900: 2219: 2201: 2141: 2055: 2000: 1945: 1923: 1866: 1827: 1723: 1668: 1621: 1603: 1538: 1473: 1408: 1342: 1236: 1213: 1126: 1029: 938: 920: 311:) is a small galaxy which contains large 273: 185:within the first billion years after the 72:typically possess around a billion stars. 2118: 663: 652: 286: 211: 140: 63: 18: 2174: 1978: 1756: 839: 424: 136: 3431: 2340:SPACE.com article on "hobbit galaxies" 987: 3163: 2348: 1929: 1762: 1656:Astronomy and Astrophysics Supplement 1324: 153:There are many dwarf galaxies in the 95:. These galaxies were located in the 334:BCD galaxies cool in the process of 3189: 1984: 1361:10.1146/annurev-astro-091918-104453 1325:Simon, Joshua D. (18 August 2019). 706:Galaxy morphological classification 592:Sagittarius Dwarf Spheroidal Galaxy 107:around two massive galaxies in the 13: 3243:List of most massive star clusters 597:Sagittarius Dwarf Irregular Galaxy 272:Ultra-compact dwarf galaxies (see 14: 3455: 2306: 1592:The Astrophysical Journal Letters 473:but is 40% more luminous with an 265:Blue compact dwarf galaxies (see 3416: 3404: 3392: 3380: 3355: 3354: 3141: 3130: 3129: 940:10.1111/j.1365-2966.2007.11438.x 872:"Hubble Sizes up a Dwarf Galaxy" 840:Jaggard, V. (9 September 2010). 683: 2278: 2257: 2236: 2088: 2033: 1899: 1844: 1781: 1579: 1514: 1449: 1383: 1318: 1281: 1252: 1230: 1191: 1165: 1135: 1062: 1007: 988:Rincon, Paul (16 August 2018). 607:Sculptor Dwarf Irregular Galaxy 484: 370:galaxies (UFDs) are a class of 207: 3072:Galaxy formation and evolution 3067:Galaxy color–magnitude diagram 1798:0100 AEST Friday 2 April 2004. 981: 955: 894: 864: 833: 805: 780: 754: 729: 577:Pegasus Dwarf Irregular Galaxy 52:'s 200–400 billion stars. The 1: 3248:List of largest star clusters 2043:Astrophysical Journal Letters 1787:Anglo-Australian Observatory 1327:"The Faintest Dwarf Galaxies" 1239:"Blue Compact Dwarf Galaxies" 901:Metz, M.; Kroupa, P. (2007). 723: 2374: 2328:article on "hobbit galaxies" 2313:Milky Way Satellite Galaxies 1557:10.1088/0004-637X/693/2/1859 1237:Papaderos, P. (7 May 2010). 59: 27:, a satellite galaxy of the 7: 3255:Hypercompact stellar system 3223:Hypercompact stellar system 2954:Galaxies named after people 2160:10.1088/2041-8205/808/1/L32 1244:. Centro de AstrofĂ­sica da 846:National Geographic Society 699: 281:Blue compact dwarf galaxies 10: 3460: 3444:Galaxy morphological types 3087:Gravitational microlensing 3042:Galactic coordinate system 2074:10.1088/2041-8205/775/1/L6 2019:10.1088/0004-637X/812/1/34 1964:10.1088/0004-637X/802/1/30 676: 401:-dominated systems known. 361:Ultra-faint dwarf galaxies 3350: 3314: 3278: 3200: 3125: 3024: 2939: 2832: 2791: 2701: 2636: 2527: 2382: 2244:"A stubborn dwarf galaxy" 2129:The Astrophysical Journal 1527:The Astrophysical Journal 1397:The Astrophysical Journal 1017:The Astrophysical Journal 475:absolute visual magnitude 305:blue compact dwarf galaxy 86:Galaxy Evolution Explorer 3052:Galactic magnetic fields 2865:Brightest cluster galaxy 2761:Luminous infrared galaxy 2318:19 February 2014 at the 2221:10.3847/1538-4357/aa6972 1854:The Astronomical Journal 1623:10.3847/2041-8213/ac3006 1462:The Astronomical Journal 1291:The Astronomical Journal 1106:The Astronomical Journal 712:List of nearest galaxies 617:Sextans Dwarf Spheroidal 497:Canis Major Dwarf Galaxy 479:supermassive black holes 413:and before the epoch of 392:Sloan Digital Sky Survey 341:Nearby examples include 3047:Galactic habitable zone 3032:Extragalactic astronomy 2621:Supermassive black hole 2535:Active galactic nucleus 2265:"A galaxy of deception" 1679:1999A&AS..134...75H 1353:2019ARA&A..57..375S 315:of young, hot, massive 235:Dwarf spheroidal galaxy 229:dwarf elliptical galaxy 2799:Low surface brightness 2550:Central massive object 2290:www.spacetelescope.org 792:www.spacetelescope.org 737:"The Milky Way Galaxy" 673: 661: 622:Small Magellanic Cloud 542:Large Magellanic Cloud 469:, of approximately 20 296: 261:Magellanic type dwarfs 245:dwarf irregular galaxy 220: 150: 73: 54:Large Magellanic Cloud 31: 25:Large Magellanic Cloud 3360:Category:Star systems 3233:Dark globular cluster 3077:Galaxy rotation curve 2333:28 March 2009 at the 2189:Astrophysical Journal 1988:Astrophysical Journal 1933:Astrophysical Journal 1815:ASP Conference Series 1794:27 April 2018 at the 1766:Sydney Morning Herald 1268:Göttingen Observatory 1246:Universidade do Porto 1201:ASP Conference Series 788:"An irregular island" 667: 656: 602:Sculptor Dwarf Galaxy 290: 215: 144: 67: 48:, as compared to the 22: 3112:Population III stars 3107:Intergalactic travel 3057:Galactic orientation 2924:Voids and supervoids 852:on 12 September 2010 741:www.messier.seds.org 425:Ultra-compact dwarfs 147:Phoenix Dwarf Galaxy 137:Local dwarf galaxies 68:Dwarf galaxies like 3291:Stellar association 3102:Intergalactic stars 2991:Large quasar groups 2986:Groups and clusters 2850:Groups and clusters 2709:Lyman-alpha emitter 2601:Interstellar medium 2212:2017ApJ...839...72A 2152:2015ApJ...808L..32S 2066:2013ApJ...775L...6S 2011:2015ApJ...812...34L 1956:2015ApJ...802...30Z 1877:2004AJ....128.1529M 1838:2004ASPC..327..155K 1734:2000PASA...17..227D 1687:10.1051/aas:1999434 1614:2021ApJ...921L...9B 1549:2009ApJ...693.1859B 1484:2005AJ....129.2692W 1419:2005ApJ...626L..85W 1304:1994AJ....107.2021M 1224:2010ASPC..421...65L 1119:1995AJ....110.2067S 1040:2008ApJ...676.1008N 931:2007MNRAS.376..387M 637:Ursa Major II Dwarf 430:Ultra-compact dwarf 329:lenticular galaxies 291:Blue compact dwarf 255:dwarf spiral galaxy 3306:Hypervelocity star 3097:Intergalactic dust 3082:Gravitational lens 3037:Galactic astronomy 3006:Starburst galaxies 2746:blue compact dwarf 2702:Energetic galaxies 2666:BL Lacertae object 1277:on 15 August 2011. 1179:. 2 September 2011 969:. 18 February 2009 821:. 19 February 2009 674: 662: 632:Ursa Major I Dwarf 435:tidal interactions 397:UFDs are the most 325:irregular galaxies 297: 221: 196:in the Milky Way, 151: 74: 32: 3368: 3367: 3157: 3156: 3117:Galaxy X (galaxy) 3092:Illustris project 3062:Galactic quadrant 2783:Wolf-Rayet galaxy 2773:Green bean galaxy 2768:Hot dust-obscured 2719:Luminous infrared 2483:Elliptical galaxy 2286:"Hubble's Legacy" 882:. 24 October 2011 768:. 8 December 2021 463:half-light radius 384:globular clusters 368:Ultra-faint dwarf 336:forming new stars 225:Elliptical galaxy 167:Triangulum Galaxy 3451: 3421: 3420: 3409: 3408: 3407: 3397: 3396: 3395: 3385: 3384: 3383: 3376: 3358: 3357: 3270:Planetary system 3228:Globular cluster 3184: 3177: 3170: 3161: 3160: 3145: 3133: 3132: 2778:Hanny's Voorwerp 2688:Relativistic jet 2562:Dark matter halo 2369: 2362: 2355: 2346: 2345: 2301: 2300: 2298: 2296: 2282: 2276: 2275: 2273: 2271: 2261: 2255: 2254: 2252: 2250: 2240: 2234: 2233: 2223: 2205: 2178: 2172: 2171: 2145: 2122: 2116: 2115: 2105: 2103: 2092: 2086: 2085: 2059: 2037: 2031: 2030: 2004: 1982: 1976: 1975: 1949: 1927: 1921: 1920: 1918: 1916: 1911: 1903: 1897: 1896: 1870: 1868:astro-ph/0406613 1861:(4): 1529–1540. 1848: 1842: 1841: 1831: 1829:astro-ph/0307362 1805: 1799: 1785: 1779: 1778: 1760: 1754: 1753: 1727: 1725:astro-ph/0002003 1705: 1699: 1698: 1672: 1670:astro-ph/9807144 1650: 1644: 1643: 1625: 1607: 1583: 1577: 1576: 1542: 1533:(2): 1859–1870. 1518: 1512: 1511: 1477: 1475:astro-ph/0410416 1468:(6): 2692–2700. 1453: 1447: 1446: 1412: 1410:astro-ph/0503552 1387: 1381: 1380: 1346: 1322: 1316: 1315: 1298:(6): 2021–2035. 1285: 1279: 1278: 1276: 1270:. Archived from 1265: 1256: 1250: 1249: 1243: 1234: 1228: 1227: 1217: 1195: 1189: 1188: 1186: 1184: 1169: 1163: 1162: 1160: 1158: 1139: 1133: 1132: 1130: 1096: 1090: 1089: 1087: 1085: 1066: 1060: 1059: 1033: 1024:(2): 1008–1015. 1011: 1005: 1004: 1002: 1000: 985: 979: 978: 976: 974: 959: 953: 952: 942: 924: 922:astro-ph/0701289 898: 892: 891: 889: 887: 868: 862: 861: 859: 857: 848:. Archived from 837: 831: 830: 828: 826: 809: 803: 802: 800: 798: 784: 778: 777: 775: 773: 758: 752: 751: 749: 747: 733: 694:taken by Hubble. 687: 642:Ursa Minor Dwarf 382:. UFDs resemble 241:Irregular galaxy 194:globular cluster 163:Andromeda Galaxy 121:by neighbouring 3459: 3458: 3454: 3453: 3452: 3450: 3449: 3448: 3429: 3428: 3427: 3415: 3405: 3403: 3393: 3391: 3381: 3379: 3371: 3369: 3364: 3346: 3315:Visual grouping 3310: 3274: 3196: 3188: 3158: 3153: 3121: 3020: 2935: 2828: 2787: 2697: 2632: 2611:Galaxy filament 2555:Galactic Center 2523: 2378: 2373: 2335:Wayback Machine 2320:Wayback Machine 2309: 2304: 2294: 2292: 2284: 2283: 2279: 2269: 2267: 2263: 2262: 2258: 2248: 2246: 2242: 2241: 2237: 2179: 2175: 2123: 2119: 2101: 2099: 2094: 2093: 2089: 2038: 2034: 1983: 1979: 1928: 1924: 1914: 1912: 1909: 1905: 1904: 1900: 1849: 1845: 1806: 1802: 1796:Wayback Machine 1786: 1782: 1761: 1757: 1742:10.1071/AS00034 1706: 1702: 1651: 1647: 1584: 1580: 1519: 1515: 1454: 1450: 1388: 1384: 1323: 1319: 1286: 1282: 1274: 1263: 1257: 1253: 1241: 1235: 1231: 1196: 1192: 1182: 1180: 1171: 1170: 1166: 1156: 1154: 1153:. 16 March 2015 1141: 1140: 1136: 1101:"Dwarf Spirals" 1097: 1093: 1083: 1081: 1068: 1067: 1063: 1012: 1008: 998: 996: 986: 982: 972: 970: 961: 960: 956: 899: 895: 885: 883: 870: 869: 865: 855: 853: 838: 834: 824: 822: 811: 810: 806: 796: 794: 786: 785: 781: 771: 769: 760: 759: 755: 745: 743: 735: 734: 730: 726: 702: 695: 688: 679: 651: 487: 468: 427: 363: 283: 210: 175:masses interact 139: 129:and eventually 127:stellar streams 125:, resulting in 123:spiral galaxies 62: 17: 12: 11: 5: 3457: 3447: 3446: 3441: 3439:Dwarf galaxies 3426: 3425: 3413: 3401: 3389: 3366: 3365: 3363: 3362: 3351: 3348: 3347: 3345: 3344: 3339: 3334: 3329: 3324: 3318: 3316: 3312: 3311: 3309: 3308: 3303: 3298: 3293: 3288: 3286:Stellar stream 3282: 3280: 3276: 3275: 3273: 3272: 3267: 3262: 3257: 3252: 3251: 3250: 3245: 3240: 3235: 3230: 3225: 3215: 3210: 3204: 3202: 3198: 3197: 3187: 3186: 3179: 3172: 3164: 3155: 3154: 3152: 3151: 3139: 3126: 3123: 3122: 3120: 3119: 3114: 3109: 3104: 3099: 3094: 3089: 3084: 3079: 3074: 3069: 3064: 3059: 3054: 3049: 3044: 3039: 3034: 3028: 3026: 3022: 3021: 3019: 3018: 3013: 3008: 3003: 2998: 2993: 2988: 2983: 2982: 2981: 2976: 2971: 2966: 2961: 2956: 2945: 2943: 2937: 2936: 2934: 2933: 2932: 2931: 2921: 2916: 2911: 2909:Stellar stream 2906: 2901: 2896: 2895: 2894: 2889: 2884: 2874: 2873: 2872: 2867: 2862: 2857: 2847: 2842: 2836: 2834: 2830: 2829: 2827: 2826: 2821: 2816: 2811: 2806: 2801: 2795: 2793: 2789: 2788: 2786: 2785: 2780: 2775: 2770: 2765: 2764: 2763: 2758: 2753: 2748: 2738: 2737: 2736: 2731: 2726: 2716: 2711: 2705: 2703: 2699: 2698: 2696: 2695: 2690: 2685: 2684: 2683: 2678: 2668: 2663: 2658: 2653: 2648: 2642: 2640: 2634: 2633: 2631: 2630: 2629: 2628: 2618: 2613: 2608: 2603: 2598: 2596:Galactic ridge 2593: 2591:Galactic plane 2588: 2587: 2586: 2576: 2575: 2574: 2564: 2559: 2558: 2557: 2547: 2542: 2537: 2531: 2529: 2525: 2524: 2522: 2521: 2520: 2519: 2509: 2504: 2503: 2502: 2492: 2491: 2490: 2480: 2479: 2478: 2473: 2468: 2463: 2453: 2452: 2451: 2446: 2441: 2436: 2431: 2426: 2421: 2411: 2410: 2409: 2404: 2394: 2388: 2386: 2380: 2379: 2372: 2371: 2364: 2357: 2349: 2343: 2342: 2337: 2322: 2308: 2307:External links 2305: 2303: 2302: 2277: 2256: 2235: 2173: 2117: 2087: 2032: 1977: 1922: 1898: 1885:10.1086/423701 1843: 1800: 1780: 1755: 1718:(3): 227–233. 1700: 1645: 1578: 1513: 1492:10.1086/430214 1448: 1427:10.1086/431760 1403:(2): L85–L88. 1382: 1337:(1): 375–415. 1317: 1312:10.1086/117013 1280: 1251: 1229: 1190: 1164: 1134: 1128:10.1086/117669 1091: 1080:. 15 June 2015 1061: 1048:10.1086/529002 1006: 980: 954: 915:(1): 387–392. 893: 863: 832: 804: 779: 753: 727: 725: 722: 721: 720: 714: 709: 701: 698: 697: 696: 689: 682: 678: 675: 650: 649: 644: 639: 634: 629: 624: 619: 614: 609: 604: 599: 594: 589: 584: 579: 574: 569: 564: 559: 554: 549: 544: 539: 534: 529: 524: 519: 514: 509: 507:Crater 2 dwarf 504: 499: 494: 492:Aquarius Dwarf 488: 486: 483: 466: 443:Fornax Cluster 426: 423: 362: 359: 282: 279: 278: 277: 270: 263: 258: 248: 238: 232: 209: 206: 198:Omega Centauri 171:galactic tides 138: 135: 61: 58: 15: 9: 6: 4: 3: 2: 3456: 3445: 3442: 3440: 3437: 3436: 3434: 3424: 3419: 3414: 3412: 3402: 3400: 3390: 3388: 3378: 3377: 3374: 3361: 3353: 3352: 3349: 3343: 3342:Constellation 3340: 3338: 3335: 3333: 3330: 3328: 3327:Multiple star 3325: 3323: 3320: 3319: 3317: 3313: 3307: 3304: 3302: 3299: 3297: 3294: 3292: 3289: 3287: 3284: 3283: 3281: 3277: 3271: 3268: 3266: 3263: 3261: 3258: 3256: 3253: 3249: 3246: 3244: 3241: 3239: 3236: 3234: 3231: 3229: 3226: 3224: 3221: 3220: 3219: 3216: 3214: 3211: 3209: 3206: 3205: 3203: 3199: 3195: 3192: 3185: 3180: 3178: 3173: 3171: 3166: 3165: 3162: 3150: 3149: 3144: 3140: 3138: 3137: 3128: 3127: 3124: 3118: 3115: 3113: 3110: 3108: 3105: 3103: 3100: 3098: 3095: 3093: 3090: 3088: 3085: 3083: 3080: 3078: 3075: 3073: 3070: 3068: 3065: 3063: 3060: 3058: 3055: 3053: 3050: 3048: 3045: 3043: 3040: 3038: 3035: 3033: 3030: 3029: 3027: 3023: 3017: 3014: 3012: 3011:Superclusters 3009: 3007: 3004: 3002: 2999: 2997: 2994: 2992: 2989: 2987: 2984: 2980: 2977: 2975: 2972: 2970: 2967: 2965: 2962: 2960: 2957: 2955: 2952: 2951: 2950: 2947: 2946: 2944: 2942: 2938: 2930: 2927: 2926: 2925: 2922: 2920: 2917: 2915: 2914:Superclusters 2912: 2910: 2907: 2905: 2902: 2900: 2897: 2893: 2890: 2888: 2885: 2883: 2880: 2879: 2878: 2875: 2871: 2868: 2866: 2863: 2861: 2858: 2856: 2853: 2852: 2851: 2848: 2846: 2845:Galactic tide 2843: 2841: 2838: 2837: 2835: 2831: 2825: 2822: 2820: 2817: 2815: 2812: 2810: 2807: 2805: 2804:Ultra diffuse 2802: 2800: 2797: 2796: 2794: 2790: 2784: 2781: 2779: 2776: 2774: 2771: 2769: 2766: 2762: 2759: 2757: 2754: 2752: 2749: 2747: 2744: 2743: 2742: 2739: 2735: 2732: 2730: 2727: 2725: 2722: 2721: 2720: 2717: 2715: 2712: 2710: 2707: 2706: 2704: 2700: 2694: 2691: 2689: 2686: 2682: 2679: 2677: 2674: 2673: 2672: 2669: 2667: 2664: 2662: 2659: 2657: 2654: 2652: 2649: 2647: 2644: 2643: 2641: 2639: 2638:Active nuclei 2635: 2627: 2624: 2623: 2622: 2619: 2617: 2614: 2612: 2609: 2607: 2604: 2602: 2599: 2597: 2594: 2592: 2589: 2585: 2582: 2581: 2580: 2577: 2573: 2570: 2569: 2568: 2565: 2563: 2560: 2556: 2553: 2552: 2551: 2548: 2546: 2543: 2541: 2538: 2536: 2533: 2532: 2530: 2526: 2518: 2515: 2514: 2513: 2510: 2508: 2505: 2501: 2498: 2497: 2496: 2493: 2489: 2486: 2485: 2484: 2481: 2477: 2474: 2472: 2469: 2467: 2464: 2462: 2459: 2458: 2457: 2454: 2450: 2447: 2445: 2442: 2440: 2437: 2435: 2432: 2430: 2427: 2425: 2422: 2420: 2417: 2416: 2415: 2412: 2408: 2405: 2403: 2400: 2399: 2398: 2395: 2393: 2390: 2389: 2387: 2385: 2381: 2377: 2370: 2365: 2363: 2358: 2356: 2351: 2350: 2347: 2341: 2338: 2336: 2332: 2329: 2327: 2323: 2321: 2317: 2314: 2311: 2310: 2291: 2287: 2281: 2266: 2260: 2245: 2239: 2231: 2227: 2222: 2217: 2213: 2209: 2204: 2199: 2195: 2191: 2190: 2185: 2177: 2169: 2165: 2161: 2157: 2153: 2149: 2144: 2139: 2135: 2131: 2130: 2121: 2114: 2112: 2097: 2091: 2083: 2079: 2075: 2071: 2067: 2063: 2058: 2053: 2049: 2045: 2044: 2036: 2028: 2024: 2020: 2016: 2012: 2008: 2003: 1998: 1994: 1990: 1989: 1981: 1973: 1969: 1965: 1961: 1957: 1953: 1948: 1943: 1939: 1935: 1934: 1926: 1908: 1902: 1894: 1890: 1886: 1882: 1878: 1874: 1869: 1864: 1860: 1856: 1855: 1847: 1839: 1835: 1830: 1825: 1821: 1817: 1816: 1811: 1804: 1797: 1793: 1790: 1784: 1776: 1772: 1769:. p. 5. 1768: 1767: 1759: 1751: 1747: 1743: 1739: 1735: 1731: 1726: 1721: 1717: 1713: 1712: 1704: 1696: 1692: 1688: 1684: 1680: 1676: 1671: 1666: 1662: 1658: 1657: 1649: 1641: 1637: 1633: 1629: 1624: 1619: 1615: 1611: 1606: 1601: 1597: 1593: 1589: 1582: 1574: 1570: 1566: 1562: 1558: 1554: 1550: 1546: 1541: 1536: 1532: 1528: 1524: 1517: 1509: 1505: 1501: 1497: 1493: 1489: 1485: 1481: 1476: 1471: 1467: 1463: 1459: 1452: 1444: 1440: 1436: 1432: 1428: 1424: 1420: 1416: 1411: 1406: 1402: 1398: 1394: 1386: 1378: 1374: 1370: 1366: 1362: 1358: 1354: 1350: 1345: 1340: 1336: 1332: 1328: 1321: 1313: 1309: 1305: 1301: 1297: 1293: 1292: 1284: 1273: 1269: 1262: 1255: 1247: 1240: 1233: 1225: 1221: 1216: 1211: 1207: 1203: 1202: 1194: 1178: 1174: 1168: 1152: 1148: 1144: 1138: 1129: 1124: 1120: 1116: 1113:: 2067–2074. 1112: 1108: 1107: 1102: 1095: 1079: 1075: 1071: 1065: 1057: 1053: 1049: 1045: 1041: 1037: 1032: 1027: 1023: 1019: 1018: 1010: 995: 991: 984: 968: 964: 958: 950: 946: 941: 936: 932: 928: 923: 918: 914: 910: 909: 904: 897: 881: 877: 873: 867: 851: 847: 843: 836: 820: 819: 818:Science Daily 814: 808: 793: 789: 783: 767: 763: 757: 742: 738: 732: 728: 718: 715: 713: 710: 707: 704: 703: 693: 690:Dwarf galaxy 686: 681: 680: 671: 668:Dwarf galaxy 666: 659: 655: 648: 645: 643: 640: 638: 635: 633: 630: 628: 625: 623: 620: 618: 615: 613: 610: 608: 605: 603: 600: 598: 595: 593: 590: 588: 587:Phoenix Dwarf 585: 583: 580: 578: 575: 573: 570: 568: 565: 563: 560: 558: 555: 553: 550: 548: 545: 543: 540: 538: 535: 533: 530: 528: 525: 523: 520: 518: 515: 513: 510: 508: 505: 503: 500: 498: 495: 493: 490: 489: 482: 480: 476: 472: 464: 460: 456: 452: 448: 444: 440: 439:Virgo Cluster 436: 431: 422: 420: 416: 412: 408: 404: 400: 395: 393: 389: 385: 381: 377: 373: 369: 365: 358: 356: 352: 348: 344: 339: 337: 332: 330: 326: 322: 318: 314: 310: 306: 302: 294: 289: 285: 275: 274:section below 271: 268: 267:section below 264: 262: 259: 256: 252: 251:Spiral galaxy 249: 246: 242: 239: 236: 233: 230: 226: 223: 222: 218: 214: 205: 203: 199: 195: 190: 188: 184: 180: 176: 172: 168: 164: 160: 156: 148: 143: 134: 132: 131:galaxy merger 128: 124: 120: 115: 113: 110: 109:constellation 106: 102: 99:, a cloud of 98: 94: 90: 87: 83: 79: 71: 66: 57: 55: 51: 47: 43: 39: 34: 30: 26: 21: 3399:Solar System 3301:Runaway star 3296:Moving group 3238:Open cluster 3218:Star cluster 3213:Dwarf galaxy 3212: 3147: 3135: 2870:fossil group 2792:Low activity 2626:Ultramassive 2456:Dwarf galaxy 2455: 2439:intermediate 2434:grand design 2325: 2293:. Retrieved 2289: 2280: 2270:29 September 2268:. Retrieved 2259: 2247:. Retrieved 2238: 2193: 2187: 2176: 2133: 2127: 2120: 2107: 2102:25 September 2100:. Retrieved 2090: 2047: 2041: 2035: 1992: 1986: 1980: 1937: 1931: 1925: 1913:. Retrieved 1901: 1858: 1852: 1846: 1819: 1813: 1803: 1783: 1764: 1758: 1715: 1709: 1703: 1660: 1654: 1648: 1595: 1591: 1581: 1530: 1526: 1516: 1465: 1461: 1451: 1400: 1396: 1385: 1334: 1330: 1320: 1295: 1289: 1283: 1272:the original 1254: 1232: 1205: 1199: 1193: 1181:. Retrieved 1167: 1155:. Retrieved 1137: 1110: 1104: 1094: 1082:. Retrieved 1064: 1021: 1015: 1009: 997:. Retrieved 993: 983: 971:. Retrieved 967:Newswise.com 966: 957: 912: 906: 896: 884:. Retrieved 866: 854:. Retrieved 850:the original 835: 823:. Retrieved 816: 807: 795:. Retrieved 791: 782: 770:. Retrieved 766:earthsky.org 765: 756: 744:. Retrieved 740: 731: 627:Tucana Dwarf 522:Fornax Dwarf 502:Carina Dwarf 485:Partial list 451:Coma Cluster 429: 428: 415:reionization 396: 367: 366: 364: 340: 333: 327:or as dwarf 308: 304: 298: 284: 208:Common types 191: 152: 116: 75: 38:dwarf galaxy 37: 35: 33: 3411:Spaceflight 3387:Outer space 3322:Double star 3265:Binary star 3260:Star system 2929:void galaxy 2892:cannibalism 2877:Interacting 2833:Interaction 2819:Blue Nugget 2809:Dark galaxy 2714:Lyman-break 2606:Protogalaxy 2572:Disc galaxy 2295:2 September 1183:3 September 1070:"True blue" 973:20 February 856:11 February 658:LEDA 677373 532:I Zwicky 18 527:Henize 2-10 517:Eridanus II 512:Draco Dwarf 403:Astronomers 399:dark matter 388:dark matter 179:dark matter 155:Local Group 93:metallicity 89:space probe 78:dark matter 40:is a small 3433:Categories 3332:Star cloud 2969:Polar-ring 2814:Red nugget 2756:faint blue 2616:Spiral arm 2471:spheroidal 2461:elliptical 2444:Magellanic 2429:flocculent 2397:Lenticular 2384:Morphology 2203:1703.09221 2143:1506.08828 2136:(1): L32. 2002:1508.07334 1947:1501.03167 1605:2110.08279 1344:1901.05465 886:25 October 724:References 717:Pea galaxy 449:, and the 447:Abell 1689 309:BCD galaxy 202:black hole 2904:Satellite 2899:Jellyfish 2887:collision 2824:Dead disk 2741:Starburst 2656:Markarian 2528:Structure 2495:Irregular 2466:irregular 2196:(2): 72. 2111:Milky Way 2057:1307.7707 2050:(1): L6. 1995:(1): 34. 1940:(1): 30. 1915:20 August 1775:0312-6315 1663:: 75–86. 1640:239016084 1632:2041-8205 1598:(1): L9. 1565:0004-637X 1540:0806.2340 1500:0004-6256 1435:0004-637X 1377:119384790 1369:0066-4146 1215:0909.5500 1056:208867075 1031:0801.2782 999:17 August 797:25 August 647:Willman 1 612:Sextans A 301:astronomy 293:PGC 51017 217:UGC 11411 183:Dark Ages 159:Milky Way 60:Formation 50:Milky Way 29:Milky Way 3337:Asterism 3136:Category 3025:See also 2949:Galaxies 2676:X-shaped 2507:Peculiar 2449:unbarred 2407:unbarred 2376:Galaxies 2331:Archived 2316:Archived 2230:55131811 2168:55254708 2082:52207639 2027:35610312 1972:73517961 1893:15575071 1792:Archived 1750:13161406 1695:17710039 1573:14543154 1443:14851943 1157:21 March 994:BBC News 949:16426005 700:See also 582:PHL 293B 572:NGC 3353 567:NGC 2915 562:NGC 1705 557:NGC 1569 459:M59-UCD3 455:M60-UCD1 421:so far. 419:Universe 411:Big Bang 407:Universe 394:(SDSS). 380:Universe 372:galaxies 355:UGCA 281 351:NGC 3353 347:NGC 2915 343:NGC 1705 313:clusters 187:Big Bang 165:and the 101:hydrogen 97:Leo Ring 70:NGC 5264 3373:Portals 3279:Unbound 3194:systems 3191:Stellar 2996:Quasars 2964:Nearest 2959:Largest 2860:cluster 2693:Seyfert 2326:Science 2208:Bibcode 2148:Bibcode 2113:galaxy. 2062:Bibcode 2007:Bibcode 1952:Bibcode 1873:Bibcode 1834:Bibcode 1822:: 155. 1730:Bibcode 1675:Bibcode 1610:Bibcode 1545:Bibcode 1480:Bibcode 1415:Bibcode 1349:Bibcode 1300:Bibcode 1220:Bibcode 1115:Bibcode 1084:15 June 1036:Bibcode 927:Bibcode 825:29 July 772:22 June 746:22 June 692:UGC 685 677:Gallery 471:parsecs 3208:Galaxy 3148:Portal 2979:Spiral 2882:merger 2661:Quasar 2646:Blazar 2584:corona 2500:barred 2476:spiral 2424:barred 2419:anemic 2414:Spiral 2402:barred 2249:6 July 2228:  2166:  2080:  2025:  1970:  1891:  1773:  1748:  1693:  1638:  1630:  1571:  1563:  1508:826898 1506:  1498:  1441:  1433:  1375:  1367:  1208:: 65. 1151:Hubble 1078:Hubble 1054:  947:  880:Hubble 670:DDO 68 552:Leo II 247:(dIrr) 161:, the 119:ripped 105:helium 42:galaxy 3423:Stars 3201:Bound 3016:Voids 2941:Lists 2919:Walls 2855:group 2840:Field 2734:ELIRG 2729:HLIRG 2724:ULIRG 2681:DRAGN 2671:Radio 2651:LINER 2545:Bulge 2517:Polar 2226:S2CID 2198:arXiv 2164:S2CID 2138:arXiv 2078:S2CID 2052:arXiv 2023:S2CID 1997:arXiv 1968:S2CID 1942:arXiv 1910:(PDF) 1889:S2CID 1863:arXiv 1824:arXiv 1746:S2CID 1720:arXiv 1691:S2CID 1665:arXiv 1636:S2CID 1600:arXiv 1569:S2CID 1535:arXiv 1504:S2CID 1470:arXiv 1439:S2CID 1405:arXiv 1373:S2CID 1339:arXiv 1275:(PDF) 1264:(PDF) 1242:(PDF) 1210:arXiv 1052:S2CID 1026:arXiv 945:S2CID 917:arXiv 547:Leo I 537:IC 10 376:stars 317:stars 257:(dS) 46:stars 2974:Ring 2579:Halo 2567:Disc 2512:Ring 2392:Disc 2297:2019 2272:2014 2251:2016 2104:2013 1917:2023 1771:ISSN 1628:ISSN 1561:ISSN 1496:ISSN 1431:ISSN 1365:ISSN 1185:2011 1177:WISE 1159:2015 1086:2015 1001:2018 975:2009 888:2011 858:2012 827:2015 799:2016 774:2023 748:2023 353:and 321:blue 303:, a 231:(dE) 145:The 103:and 82:NASA 23:The 2751:pea 2540:Bar 2216:doi 2194:839 2156:doi 2134:808 2070:doi 2048:775 2015:doi 1993:812 1960:doi 1938:802 1881:doi 1859:128 1820:327 1738:doi 1683:doi 1661:134 1618:doi 1596:921 1553:doi 1531:693 1488:doi 1466:129 1423:doi 1401:626 1357:doi 1308:doi 1296:107 1206:421 1147:ESA 1123:doi 1111:110 1074:ESA 1044:doi 1022:676 935:doi 913:376 876:ESA 465:, r 299:In 112:Leo 84:'s 3435:: 2488:cD 2288:. 2224:. 2214:. 2206:. 2192:. 2186:. 2162:. 2154:. 2146:. 2132:. 2106:. 2076:. 2068:. 2060:. 2046:. 2021:. 2013:. 2005:. 1991:. 1966:. 1958:. 1950:. 1936:. 1887:. 1879:. 1871:. 1857:. 1832:. 1818:. 1812:. 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Index


Large Magellanic Cloud
Milky Way
galaxy
stars
Milky Way
Large Magellanic Cloud

NGC 5264
dark matter
NASA
Galaxy Evolution Explorer
space probe
metallicity
Leo Ring
hydrogen
helium
constellation
Leo
ripped
spiral galaxies
stellar streams
galaxy merger

Phoenix Dwarf Galaxy
Local Group
Milky Way
Andromeda Galaxy
Triangulum Galaxy
galactic tides

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