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Dwarf galaxy

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696: 299: 153: 665: 3367: 3142: 676: 31: 3154: 464:, 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 3417: 3405: 67:, 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. 76: 3393: 224: 3429: 2136:
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
468:, about 54 million light years away, which contains approximately 200 million solar masses within a 160 light year radius; the stars in its central region are packed 25 times more densely than stars in Earth's region in the Milky Way. 2192:
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).
349:. 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. 852: 1664:
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".
428:. 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 1719:
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).
342:. 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. 918: 1862:
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
1917: 617: 1249: 420:, as all UFDs discovered so far are ancient systems that have likely formed very early on, only a few million years after the 3082: 587: 3258: 2809: 2053: 401:
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
137: 2560: 2459: 1272:"New insights to the photometric structure of Blue Compact Dwarf Galaxies from deep Near-Infrared Studies" 1161: 1088: 890: 632: 552: 160:
is a dwarf irregular galaxy, featuring younger stars in its inner regions and older ones at its outskirts.
152: 64: 35: 397:(GCs) in appearance but have very different properties. Unlike GCs, UFDs contain a significant amount of 3370: 3243: 3087: 2984: 2686: 2199: 1998: 1943: 1825: 1776: 1337: 1256: 1211: 1157: 1084: 886: 612: 562: 193: 2350: 3347: 3117: 3067: 2902: 2814: 2550: 2434: 2370: 2218: 2158: 2072: 2017: 1962: 1883: 1844: 1740: 1685: 1620: 1555: 1490: 1425: 1359: 1310: 1230: 1125: 1046: 937: 557: 3409: 3301: 2880: 2788: 2719: 2611: 2486: 647: 265: 122: 3153: 1533: 3421: 3397: 3316: 3306: 3112: 3107: 3092: 3047: 3016: 3001: 2919: 2887: 2724: 2676: 2666: 2236: 2208: 2174: 2148: 2088: 2062: 2033: 2007: 1978: 1952: 1899: 1873: 1834: 1756: 1730: 1701: 1675: 1646: 1610: 1579: 1545: 1514: 1480: 1449: 1415: 1383: 1349: 1220: 1062: 1036: 955: 927: 823: 668: 642: 185: 129: 2335: 303: 227: 3145: 3127: 3102: 3072: 2951: 2793: 2783: 2766: 2698: 2527: 2493: 2454: 2407: 1820: 1781: 1638: 1571: 1506: 1441: 1375: 339: 271: 235: 177: 702: 3280: 3238: 3157: 2959: 2934: 2914: 2909: 2897: 2751: 2572: 2505: 2226: 2166: 2080: 2025: 1970: 1891: 1748: 1693: 1689: 1628: 1563: 1498: 1433: 1367: 1363: 1318: 1133: 1054: 945: 680: 652: 473: 394: 335: 255: 251: 204: 173: 3006: 2929: 2621: 2594: 2565: 2517: 2363: 2345: 2330: 1806: 1534:"Pre-Reionization Fossils, Ultra-Faint Dwarfs, and the Missing Galactic Satellite Problem" 1183: 188:. Streams of galactic material are pulled away from the parent galaxies and the halos of 87:
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".
542: 537: 527: 522: 409: 398: 189: 165: 103: 99: 88: 2275: 2231: 2194: 1633: 1598: 3342: 2824: 2761: 882: 727: 457: 448:, travelling through the hearts of rich clusters. UCDs have been found in the 413: 212: 1785: 1642: 1575: 1510: 1445: 1379: 248:(dSph): Once a subtype of dwarf ellipticals, now regarded as a distinct type 2834: 2121: 1821:"Galaxies and Overmerging: What Does it Take to Destroy a Satellite Galaxy?" 973: 657: 622: 311: 169: 60: 39: 17: 747: 1697: 75: 1878: 1839: 1735: 1680: 1485: 1420: 932: 592: 582: 577: 572: 567: 469: 465: 429: 421: 417: 390: 365: 361: 357: 353: 197: 111: 107: 80: 2323: 481: 223: 180:. A 2007 paper has suggested that many dwarf galaxies were created by 3218: 2671: 2656: 2386: 382: 168:; these small galaxies frequently orbit larger galaxies, such as the 115: 52: 1752: 3428: 2213: 2153: 2012: 1957: 1895: 1615: 1502: 1437: 1354: 1322: 1138: 1111: 1058: 3170: 2744: 2739: 2734: 2691: 2067: 1597:
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
719: â€“ System for categorizing galaxies based on appearance 2355: 334:
in colour. Most BCD galaxies are also classified as dwarf
974:"New Recipe for Dwarf Galaxies: Start with Leftover Gas" 914:"Dwarf-spheroidal satellites: are they of tidal origin?" 853:"Pictures: New Proof Spiral Galaxies Eat, Digest Dwarfs" 824:"New Recipe For Dwarf Galaxies: Start With Leftover Gas" 385:
that contain from a few hundred to one hundred thousand
2109:. Phys.org (Omicron Technology Ltd). 24 September 2013 3381: 1722:
Publications of the Astronomical Society of Australia
1184:"WISE Discovers Baby Galaxies in the Nearby Universe" 730: â€“ Possible type of luminous blue compact galaxy 1819:
Stelios Kazantzidis; Ben Moore; Lucio Mayer (2004).
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Small galaxy composed of up to several billion stars
3325: 3289: 3211: 3035: 2950: 2843: 2802: 2712: 2647: 2538: 2393: 1532:Bovill, Mia S.; Ricotti, Massimo (10 March 2009). 1001:"Earliest galaxies found 'on our cosmic doorstep'" 472:is approximately the same size as M60-UCD1 with a 1599:"The Tail of Late-forming Dwarf Galaxies in ΛCDM" 1270:Noeske, K.; Papaderos, P.; Cairos, L. M. (2003). 919:Monthly Notices of the Royal Astronomical Society 2756: 2107:"Evidence for densest galaxy in nearby universe" 277: 773:"The Magellanic Clouds, our galactic neighbors" 211:, is in fact the core of a dwarf galaxy with a 2476: 492:weighing 13% and 18% of the galaxies' masses. 3186: 3012:List of the most distant astronomical objects 2371: 671:is located about 14 million light-years away. 91:, or from gas that contains metals. However, 55:composed of about 1000 up to several billion 8: 1800:Astronomers discover dozens of mini-galaxies 1404:"A New Milky Way Dwarf Galaxy in Ursa Major" 1342:Annual Review of Astronomy and Astrophysics 444:been stripped of gas and outlying stars by 389:, making them the faintest galaxies in the 3193: 3179: 3171: 2378: 2364: 2356: 2137:Systems in the Sloan Digital Sky Survey". 1918:"The Next Generation Virgo Cluster Survey" 1154:"An intriguing young-looking dwarf galaxy" 2230: 2212: 2152: 2066: 2011: 1956: 1877: 1838: 1734: 1679: 1632: 1614: 1549: 1484: 1419: 1353: 1224: 1137: 1040: 949: 931: 322:) is a small galaxy which contains large 284: 196:within the first billion years after the 83:typically possess around a billion stars. 3388: 739: 691: 2351:SPACE.com article on "hobbit galaxies" 1667:Astronomy and Astrophysics Supplement 164:There are many dwarf galaxies in the 106:. These galaxies were located in the 7: 345:BCD galaxies cool in the process of 1372:10.1146/annurev-astro-091918-104453 1336:Simon, Joshua D. (18 August 2019). 717:Galaxy morphological classification 603:Sagittarius Dwarf Spheroidal Galaxy 118:around two massive galaxies in the 3254:List of most massive star clusters 608:Sagittarius Dwarf Irregular Galaxy 283:Ultra-compact dwarf galaxies (see 25: 1603:The Astrophysical Journal Letters 484:but is 40% more luminous with an 276:Blue compact dwarf galaxies (see 3427: 3415: 3403: 3391: 3366: 3365: 3152: 3141: 3140: 951:10.1111/j.1365-2966.2007.11438.x 883:"Hubble Sizes up a Dwarf Galaxy" 851:Jaggard, V. (9 September 2010). 694: 999:Rincon, Paul (16 August 2018). 618:Sculptor Dwarf Irregular Galaxy 381:galaxies (UFDs) are a class of 3083:Galaxy formation and evolution 3078:Galaxy color–magnitude diagram 1809:0100 AEST Friday 2 April 2004. 588:Pegasus Dwarf Irregular Galaxy 63:'s 200–400 billion stars. The 1: 3259:List of largest star clusters 2054:Astrophysical Journal Letters 1798:Anglo-Australian Observatory 1338:"The Faintest Dwarf Galaxies" 1250:"Blue Compact Dwarf Galaxies" 912:Metz, M.; Kroupa, P. (2007). 2339:article on "hobbit galaxies" 2324:Milky Way Satellite Galaxies 1568:10.1088/0004-637X/693/2/1859 1248:Papaderos, P. (7 May 2010). 38:, a satellite galaxy of the 3266:Hypercompact stellar system 3234:Hypercompact stellar system 2965:Galaxies named after people 2171:10.1088/2041-8205/808/1/L32 1255:. Centro de AstrofĂ­sica da 857:National Geographic Society 292:Blue compact dwarf galaxies 3471: 3455:Galaxy morphological types 3098:Gravitational microlensing 3053:Galactic coordinate system 2085:10.1088/2041-8205/775/1/L6 2030:10.1088/0004-637X/812/1/34 1975:10.1088/0004-637X/802/1/30 412:-dominated systems known. 372:Ultra-faint dwarf galaxies 3361: 3136: 2255:"A stubborn dwarf galaxy" 2140:The Astrophysical Journal 1538:The Astrophysical Journal 1408:The Astrophysical Journal 1028:The Astrophysical Journal 486:absolute visual magnitude 316:blue compact dwarf galaxy 97:Galaxy Evolution Explorer 3063:Galactic magnetic fields 2876:Brightest cluster galaxy 2772:Luminous infrared galaxy 2329:19 February 2014 at the 2232:10.3847/1538-4357/aa6972 1865:The Astronomical Journal 1634:10.3847/2041-8213/ac3006 1473:The Astronomical Journal 1302:The Astronomical Journal 1117:The Astronomical Journal 723:List of nearest galaxies 628:Sextans Dwarf Spheroidal 508:Canis Major Dwarf Galaxy 490:supermassive black holes 424:and before the epoch of 403:Sloan Digital Sky Survey 352:Nearby examples include 3058:Galactic habitable zone 3043:Extragalactic astronomy 2632:Supermassive black hole 2546:Active galactic nucleus 2276:"A galaxy of deception" 1690:1999A&AS..134...75H 1364:2019ARA&A..57..375S 326:of young, hot, massive 246:Dwarf spheroidal galaxy 240:dwarf elliptical galaxy 2810:Low surface brightness 2561:Central massive object 2301:www.spacetelescope.org 803:www.spacetelescope.org 748:"The Milky Way Galaxy" 684: 672: 633:Small Magellanic Cloud 553:Large Magellanic Cloud 480:, of approximately 20 307: 272:Magellanic type dwarfs 256:dwarf irregular galaxy 231: 161: 84: 65:Large Magellanic Cloud 42: 36:Large Magellanic Cloud 3371:Category:Star systems 3244:Dark globular cluster 3088:Galaxy rotation curve 2344:28 March 2009 at the 2200:Astrophysical Journal 1999:Astrophysical Journal 1944:Astrophysical Journal 1826:ASP Conference Series 1805:27 April 2018 at the 1777:Sydney Morning Herald 1279:Göttingen Observatory 1257:Universidade do Porto 1212:ASP Conference Series 799:"An irregular island" 678: 667: 613:Sculptor Dwarf Galaxy 301: 226: 155: 78: 59:, as compared to the 33: 3123:Population III stars 3118:Intergalactic travel 3068:Galactic orientation 2935:Voids and supervoids 863:on 12 September 2010 752:www.messier.seds.org 436:Ultra-compact dwarfs 158:Phoenix Dwarf Galaxy 148:Local dwarf galaxies 79:Dwarf galaxies like 3302:Stellar association 3113:Intergalactic stars 3002:Large quasar groups 2997:Groups and clusters 2861:Groups and clusters 2720:Lyman-alpha emitter 2612:Interstellar medium 2223:2017ApJ...839...72A 2163:2015ApJ...808L..32S 2077:2013ApJ...775L...6S 2022:2015ApJ...812...34L 1967:2015ApJ...802...30Z 1888:2004AJ....128.1529M 1849:2004ASPC..327..155K 1745:2000PASA...17..227D 1698:10.1051/aas:1999434 1625:2021ApJ...921L...9B 1560:2009ApJ...693.1859B 1495:2005AJ....129.2692W 1430:2005ApJ...626L..85W 1315:1994AJ....107.2021M 1235:2010ASPC..421...65L 1130:1995AJ....110.2067S 1051:2008ApJ...676.1008N 942:2007MNRAS.376..387M 648:Ursa Major II Dwarf 441:Ultra-compact dwarf 340:lenticular galaxies 302:Blue compact dwarf 266:dwarf spiral galaxy 3317:Hypervelocity star 3108:Intergalactic dust 3093:Gravitational lens 3048:Galactic astronomy 3017:Starburst galaxies 2757:blue compact dwarf 2713:Energetic galaxies 2677:BL Lacertae object 1288:on 15 August 2011. 1190:. 2 September 2011 980:. 18 February 2009 832:. 19 February 2009 685: 673: 643:Ursa Major I Dwarf 446:tidal interactions 408:UFDs are the most 336:irregular galaxies 308: 232: 207:in the Milky Way, 162: 85: 43: 3379: 3378: 3168: 3167: 3128:Galaxy X (galaxy) 3103:Illustris project 3073:Galactic quadrant 2794:Wolf-Rayet galaxy 2784:Green bean galaxy 2779:Hot dust-obscured 2730:Luminous infrared 2494:Elliptical galaxy 2297:"Hubble's Legacy" 893:. 24 October 2011 779:. 8 December 2021 474:half-light radius 395:globular clusters 379:Ultra-faint dwarf 347:forming new stars 236:Elliptical galaxy 178:Triangulum Galaxy 16:(Redirected from 3462: 3432: 3431: 3420: 3419: 3418: 3408: 3407: 3406: 3396: 3395: 3394: 3387: 3369: 3368: 3281:Planetary system 3239:Globular cluster 3195: 3188: 3181: 3172: 3156: 3144: 3143: 2789:Hanny's Voorwerp 2699:Relativistic jet 2573:Dark matter halo 2380: 2373: 2366: 2357: 2312: 2311: 2309: 2307: 2293: 2287: 2286: 2284: 2282: 2272: 2266: 2265: 2263: 2261: 2251: 2245: 2244: 2234: 2216: 2189: 2183: 2182: 2156: 2133: 2127: 2126: 2116: 2114: 2103: 2097: 2096: 2070: 2048: 2042: 2041: 2015: 1993: 1987: 1986: 1960: 1938: 1932: 1931: 1929: 1927: 1922: 1914: 1908: 1907: 1881: 1879:astro-ph/0406613 1872:(4): 1529–1540. 1859: 1853: 1852: 1842: 1840:astro-ph/0307362 1816: 1810: 1796: 1790: 1789: 1771: 1765: 1764: 1738: 1736:astro-ph/0002003 1716: 1710: 1709: 1683: 1681:astro-ph/9807144 1661: 1655: 1654: 1636: 1618: 1594: 1588: 1587: 1553: 1544:(2): 1859–1870. 1529: 1523: 1522: 1488: 1486:astro-ph/0410416 1479:(6): 2692–2700. 1464: 1458: 1457: 1423: 1421:astro-ph/0503552 1398: 1392: 1391: 1357: 1333: 1327: 1326: 1309:(6): 2021–2035. 1296: 1290: 1289: 1287: 1281:. Archived from 1276: 1267: 1261: 1260: 1254: 1245: 1239: 1238: 1228: 1206: 1200: 1199: 1197: 1195: 1180: 1174: 1173: 1171: 1169: 1150: 1144: 1143: 1141: 1107: 1101: 1100: 1098: 1096: 1077: 1071: 1070: 1044: 1035:(2): 1008–1015. 1022: 1016: 1015: 1013: 1011: 996: 990: 989: 987: 985: 970: 964: 963: 953: 935: 933:astro-ph/0701289 909: 903: 902: 900: 898: 879: 873: 872: 870: 868: 859:. Archived from 848: 842: 841: 839: 837: 820: 814: 813: 811: 809: 795: 789: 788: 786: 784: 769: 763: 762: 760: 758: 744: 705:taken by Hubble. 698: 653:Ursa Minor Dwarf 393:. UFDs resemble 252:Irregular galaxy 205:globular cluster 174:Andromeda Galaxy 132:by neighbouring 21: 3470: 3469: 3465: 3464: 3463: 3461: 3460: 3459: 3440: 3439: 3438: 3426: 3416: 3414: 3404: 3402: 3392: 3390: 3382: 3380: 3375: 3357: 3326:Visual grouping 3321: 3285: 3207: 3199: 3169: 3164: 3132: 3031: 2946: 2839: 2798: 2708: 2643: 2622:Galaxy filament 2566:Galactic Center 2534: 2389: 2384: 2346:Wayback Machine 2331:Wayback Machine 2320: 2315: 2305: 2303: 2295: 2294: 2290: 2280: 2278: 2274: 2273: 2269: 2259: 2257: 2253: 2252: 2248: 2191: 2190: 2186: 2135: 2134: 2130: 2112: 2110: 2105: 2104: 2100: 2050: 2049: 2045: 1995: 1994: 1990: 1940: 1939: 1935: 1925: 1923: 1920: 1916: 1915: 1911: 1861: 1860: 1856: 1818: 1817: 1813: 1807:Wayback Machine 1797: 1793: 1773: 1772: 1768: 1753:10.1071/AS00034 1718: 1717: 1713: 1663: 1662: 1658: 1596: 1595: 1591: 1531: 1530: 1526: 1466: 1465: 1461: 1400: 1399: 1395: 1335: 1334: 1330: 1298: 1297: 1293: 1285: 1274: 1269: 1268: 1264: 1252: 1247: 1246: 1242: 1208: 1207: 1203: 1193: 1191: 1182: 1181: 1177: 1167: 1165: 1164:. 16 March 2015 1152: 1151: 1147: 1112:"Dwarf Spirals" 1109: 1108: 1104: 1094: 1092: 1079: 1078: 1074: 1024: 1023: 1019: 1009: 1007: 998: 997: 993: 983: 981: 972: 971: 967: 911: 910: 906: 896: 894: 881: 880: 876: 866: 864: 850: 849: 845: 835: 833: 822: 821: 817: 807: 805: 797: 796: 792: 782: 780: 771: 770: 766: 756: 754: 746: 745: 741: 737: 713: 706: 699: 690: 662: 498: 479: 438: 374: 294: 221: 186:masses interact 150: 140:and eventually 138:stellar streams 136:, resulting in 134:spiral galaxies 73: 28: 23: 22: 15: 12: 11: 5: 3468: 3466: 3458: 3457: 3452: 3450:Dwarf galaxies 3442: 3441: 3437: 3436: 3424: 3412: 3400: 3377: 3376: 3374: 3373: 3362: 3359: 3358: 3356: 3355: 3350: 3345: 3340: 3335: 3329: 3327: 3323: 3322: 3320: 3319: 3314: 3309: 3304: 3299: 3297:Stellar stream 3293: 3291: 3287: 3286: 3284: 3283: 3278: 3273: 3268: 3263: 3262: 3261: 3256: 3251: 3246: 3241: 3236: 3226: 3221: 3215: 3213: 3209: 3208: 3200: 3198: 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2535: 2533: 2532: 2531: 2530: 2520: 2515: 2514: 2513: 2503: 2502: 2501: 2491: 2490: 2489: 2484: 2479: 2474: 2464: 2463: 2462: 2457: 2452: 2447: 2442: 2437: 2432: 2422: 2421: 2420: 2415: 2405: 2399: 2397: 2391: 2390: 2385: 2383: 2382: 2375: 2368: 2360: 2354: 2353: 2348: 2333: 2319: 2318:External links 2316: 2314: 2313: 2288: 2267: 2246: 2184: 2128: 2098: 2043: 1988: 1933: 1909: 1896:10.1086/423701 1854: 1811: 1791: 1766: 1729:(3): 227–233. 1711: 1656: 1589: 1524: 1503:10.1086/430214 1459: 1438:10.1086/431760 1414:(2): L85–L88. 1393: 1348:(1): 375–415. 1328: 1323:10.1086/117013 1291: 1262: 1240: 1201: 1175: 1145: 1139:10.1086/117669 1102: 1091:. 15 June 2015 1072: 1059:10.1086/529002 1017: 991: 965: 926:(1): 387–392. 904: 874: 843: 815: 790: 764: 738: 736: 733: 732: 731: 725: 720: 712: 709: 708: 707: 700: 693: 689: 686: 661: 660: 655: 650: 645: 640: 635: 630: 625: 620: 615: 610: 605: 600: 595: 590: 585: 580: 575: 570: 565: 560: 555: 550: 545: 540: 535: 530: 525: 520: 518:Crater 2 dwarf 515: 510: 505: 503:Aquarius Dwarf 499: 497: 494: 477: 454:Fornax Cluster 437: 434: 373: 370: 293: 290: 289: 288: 281: 274: 269: 259: 249: 243: 220: 217: 209:Omega Centauri 182:galactic tides 149: 146: 72: 69: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 3467: 3456: 3453: 3451: 3448: 3447: 3445: 3435: 3430: 3425: 3423: 3413: 3411: 3401: 3399: 3389: 3385: 3372: 3364: 3363: 3360: 3354: 3353:Constellation 3351: 3349: 3346: 3344: 3341: 3339: 3338:Multiple star 3336: 3334: 3331: 3330: 3328: 3324: 3318: 3315: 3313: 3310: 3308: 3305: 3303: 3300: 3298: 3295: 3294: 3292: 3288: 3282: 3279: 3277: 3274: 3272: 3269: 3267: 3264: 3260: 3257: 3255: 3252: 3250: 3247: 3245: 3242: 3240: 3237: 3235: 3232: 3231: 3230: 3227: 3225: 3222: 3220: 3217: 3216: 3214: 3210: 3206: 3203: 3196: 3191: 3189: 3184: 3182: 3177: 3176: 3173: 3161: 3160: 3155: 3151: 3149: 3148: 3139: 3138: 3135: 3129: 3126: 3124: 3121: 3119: 3116: 3114: 3111: 3109: 3106: 3104: 3101: 3099: 3096: 3094: 3091: 3089: 3086: 3084: 3081: 3079: 3076: 3074: 3071: 3069: 3066: 3064: 3061: 3059: 3056: 3054: 3051: 3049: 3046: 3044: 3041: 3040: 3038: 3034: 3028: 3025: 3023: 3022:Superclusters 3020: 3018: 3015: 3013: 3010: 3008: 3005: 3003: 3000: 2998: 2995: 2991: 2988: 2986: 2983: 2981: 2978: 2976: 2973: 2971: 2968: 2966: 2963: 2962: 2961: 2958: 2957: 2955: 2953: 2949: 2941: 2938: 2937: 2936: 2933: 2931: 2928: 2926: 2925:Superclusters 2923: 2921: 2918: 2916: 2913: 2911: 2908: 2904: 2901: 2899: 2896: 2894: 2891: 2890: 2889: 2886: 2882: 2879: 2877: 2874: 2872: 2869: 2867: 2864: 2863: 2862: 2859: 2857: 2856:Galactic tide 2854: 2852: 2849: 2848: 2846: 2842: 2836: 2833: 2831: 2828: 2826: 2823: 2821: 2818: 2816: 2815:Ultra diffuse 2813: 2811: 2808: 2807: 2805: 2801: 2795: 2792: 2790: 2787: 2785: 2782: 2780: 2777: 2773: 2770: 2768: 2765: 2763: 2760: 2758: 2755: 2754: 2753: 2750: 2746: 2743: 2741: 2738: 2736: 2733: 2732: 2731: 2728: 2726: 2723: 2721: 2718: 2717: 2715: 2711: 2705: 2702: 2700: 2697: 2693: 2690: 2688: 2685: 2684: 2683: 2680: 2678: 2675: 2673: 2670: 2668: 2665: 2663: 2660: 2658: 2655: 2654: 2652: 2650: 2649:Active nuclei 2646: 2638: 2635: 2634: 2633: 2630: 2628: 2625: 2623: 2620: 2618: 2615: 2613: 2610: 2608: 2605: 2603: 2600: 2596: 2593: 2592: 2591: 2588: 2584: 2581: 2580: 2579: 2576: 2574: 2571: 2567: 2564: 2563: 2562: 2559: 2557: 2554: 2552: 2549: 2547: 2544: 2543: 2541: 2537: 2529: 2526: 2525: 2524: 2521: 2519: 2516: 2512: 2509: 2508: 2507: 2504: 2500: 2497: 2496: 2495: 2492: 2488: 2485: 2483: 2480: 2478: 2475: 2473: 2470: 2469: 2468: 2465: 2461: 2458: 2456: 2453: 2451: 2448: 2446: 2443: 2441: 2438: 2436: 2433: 2431: 2428: 2427: 2426: 2423: 2419: 2416: 2414: 2411: 2410: 2409: 2406: 2404: 2401: 2400: 2398: 2396: 2392: 2388: 2381: 2376: 2374: 2369: 2367: 2362: 2361: 2358: 2352: 2349: 2347: 2343: 2340: 2338: 2334: 2332: 2328: 2325: 2322: 2321: 2317: 2302: 2298: 2292: 2289: 2277: 2271: 2268: 2256: 2250: 2247: 2242: 2238: 2233: 2228: 2224: 2220: 2215: 2210: 2206: 2202: 2201: 2196: 2188: 2185: 2180: 2176: 2172: 2168: 2164: 2160: 2155: 2150: 2146: 2142: 2141: 2132: 2129: 2125: 2123: 2108: 2102: 2099: 2094: 2090: 2086: 2082: 2078: 2074: 2069: 2064: 2060: 2056: 2055: 2047: 2044: 2039: 2035: 2031: 2027: 2023: 2019: 2014: 2009: 2005: 2001: 2000: 1992: 1989: 1984: 1980: 1976: 1972: 1968: 1964: 1959: 1954: 1950: 1946: 1945: 1937: 1934: 1919: 1913: 1910: 1905: 1901: 1897: 1893: 1889: 1885: 1880: 1875: 1871: 1867: 1866: 1858: 1855: 1850: 1846: 1841: 1836: 1832: 1828: 1827: 1822: 1815: 1812: 1808: 1804: 1801: 1795: 1792: 1787: 1783: 1780:. p. 5. 1779: 1778: 1770: 1767: 1762: 1758: 1754: 1750: 1746: 1742: 1737: 1732: 1728: 1724: 1723: 1715: 1712: 1707: 1703: 1699: 1695: 1691: 1687: 1682: 1677: 1673: 1669: 1668: 1660: 1657: 1652: 1648: 1644: 1640: 1635: 1630: 1626: 1622: 1617: 1612: 1608: 1604: 1600: 1593: 1590: 1585: 1581: 1577: 1573: 1569: 1565: 1561: 1557: 1552: 1547: 1543: 1539: 1535: 1528: 1525: 1520: 1516: 1512: 1508: 1504: 1500: 1496: 1492: 1487: 1482: 1478: 1474: 1470: 1463: 1460: 1455: 1451: 1447: 1443: 1439: 1435: 1431: 1427: 1422: 1417: 1413: 1409: 1405: 1397: 1394: 1389: 1385: 1381: 1377: 1373: 1369: 1365: 1361: 1356: 1351: 1347: 1343: 1339: 1332: 1329: 1324: 1320: 1316: 1312: 1308: 1304: 1303: 1295: 1292: 1284: 1280: 1273: 1266: 1263: 1258: 1251: 1244: 1241: 1236: 1232: 1227: 1222: 1218: 1214: 1213: 1205: 1202: 1189: 1185: 1179: 1176: 1163: 1159: 1155: 1149: 1146: 1140: 1135: 1131: 1127: 1124:: 2067–2074. 1123: 1119: 1118: 1113: 1106: 1103: 1090: 1086: 1082: 1076: 1073: 1068: 1064: 1060: 1056: 1052: 1048: 1043: 1038: 1034: 1030: 1029: 1021: 1018: 1006: 1002: 995: 992: 979: 975: 969: 966: 961: 957: 952: 947: 943: 939: 934: 929: 925: 921: 920: 915: 908: 905: 892: 888: 884: 878: 875: 862: 858: 854: 847: 844: 831: 830: 829:Science Daily 825: 819: 816: 804: 800: 794: 791: 778: 774: 768: 765: 753: 749: 743: 740: 734: 729: 726: 724: 721: 718: 715: 714: 710: 704: 701:Dwarf galaxy 697: 692: 687: 682: 679:Dwarf galaxy 677: 670: 666: 659: 656: 654: 651: 649: 646: 644: 641: 639: 636: 634: 631: 629: 626: 624: 621: 619: 616: 614: 611: 609: 606: 604: 601: 599: 598:Phoenix Dwarf 596: 594: 591: 589: 586: 584: 581: 579: 576: 574: 571: 569: 566: 564: 561: 559: 556: 554: 551: 549: 546: 544: 541: 539: 536: 534: 531: 529: 526: 524: 521: 519: 516: 514: 511: 509: 506: 504: 501: 500: 495: 493: 491: 487: 483: 475: 471: 467: 463: 459: 455: 451: 450:Virgo Cluster 447: 442: 435: 433: 431: 427: 423: 419: 415: 411: 406: 404: 400: 396: 392: 388: 384: 380: 376: 371: 369: 367: 363: 359: 355: 350: 348: 343: 341: 337: 333: 329: 325: 321: 317: 313: 305: 300: 296: 291: 286: 285:section below 282: 279: 278:section below 275: 273: 270: 267: 263: 262:Spiral galaxy 260: 257: 253: 250: 247: 244: 241: 237: 234: 233: 229: 225: 218: 216: 214: 210: 206: 201: 199: 195: 191: 187: 183: 179: 175: 171: 167: 159: 154: 147: 145: 143: 142:galaxy merger 139: 135: 131: 126: 124: 121: 120:constellation 117: 113: 110:, a cloud of 109: 105: 101: 98: 94: 90: 82: 77: 70: 68: 66: 62: 58: 54: 50: 45: 41: 37: 32: 19: 3410:Solar System 3312:Runaway star 3307:Moving group 3249:Open cluster 3229:Star cluster 3224:Dwarf galaxy 3223: 3158: 3146: 2881:fossil group 2803:Low activity 2637:Ultramassive 2467:Dwarf galaxy 2466: 2450:intermediate 2445:grand design 2336: 2304:. Retrieved 2300: 2291: 2281:29 September 2279:. Retrieved 2270: 2258:. Retrieved 2249: 2204: 2198: 2187: 2144: 2138: 2131: 2118: 2113:25 September 2111:. Retrieved 2101: 2058: 2052: 2046: 2003: 1997: 1991: 1948: 1942: 1936: 1924:. Retrieved 1912: 1869: 1863: 1857: 1830: 1824: 1814: 1794: 1775: 1769: 1726: 1720: 1714: 1671: 1665: 1659: 1606: 1602: 1592: 1541: 1537: 1527: 1476: 1472: 1462: 1411: 1407: 1396: 1345: 1341: 1331: 1306: 1300: 1294: 1283:the original 1265: 1243: 1216: 1210: 1204: 1192:. Retrieved 1178: 1166:. Retrieved 1148: 1121: 1115: 1105: 1093:. Retrieved 1075: 1032: 1026: 1020: 1008:. Retrieved 1004: 994: 982:. Retrieved 978:Newswise.com 977: 968: 923: 917: 907: 895:. Retrieved 877: 865:. Retrieved 861:the original 846: 834:. Retrieved 827: 818: 806:. Retrieved 802: 793: 781:. Retrieved 777:earthsky.org 776: 767: 755:. Retrieved 751: 742: 638:Tucana Dwarf 533:Fornax Dwarf 513:Carina Dwarf 496:Partial list 462:Coma Cluster 440: 439: 426:reionization 407: 378: 377: 375: 351: 344: 338:or as dwarf 319: 315: 309: 295: 219:Common types 202: 163: 127: 86: 49:dwarf galaxy 48: 46: 44: 18:Dwarf Galaxy 3422:Spaceflight 3398:Outer space 3333:Double star 3276:Binary star 3271:Star system 2940:void galaxy 2903:cannibalism 2888:Interacting 2844:Interaction 2830:Blue Nugget 2820:Dark galaxy 2725:Lyman-break 2617:Protogalaxy 2583:Disc galaxy 2306:2 September 1194:3 September 1081:"True blue" 984:20 February 867:11 February 669:LEDA 677373 543:I Zwicky 18 538:Henize 2-10 528:Eridanus II 523:Draco Dwarf 414:Astronomers 410:dark matter 399:dark matter 190:dark matter 166:Local Group 104:metallicity 100:space probe 89:dark matter 51:is a small 3444:Categories 3343:Star cloud 2980:Polar-ring 2825:Red nugget 2767:faint blue 2627:Spiral arm 2482:spheroidal 2472:elliptical 2455:Magellanic 2440:flocculent 2408:Lenticular 2395:Morphology 2214:1703.09221 2154:1506.08828 2147:(1): L32. 2013:1508.07334 1958:1501.03167 1616:2110.08279 1355:1901.05465 897:25 October 735:References 728:Pea galaxy 460:, and the 458:Abell 1689 320:BCD galaxy 213:black hole 2915:Satellite 2910:Jellyfish 2898:collision 2835:Dead disk 2752:Starburst 2667:Markarian 2539:Structure 2506:Irregular 2477:irregular 2207:(2): 72. 2122:Milky Way 2068:1307.7707 2061:(1): L6. 2006:(1): 34. 1951:(1): 30. 1926:20 August 1786:0312-6315 1674:: 75–86. 1651:239016084 1643:2041-8205 1609:(1): L9. 1576:0004-637X 1551:0806.2340 1511:0004-6256 1446:0004-637X 1388:119384790 1380:0066-4146 1226:0909.5500 1067:208867075 1042:0801.2782 1010:17 August 808:25 August 658:Willman 1 623:Sextans A 312:astronomy 304:PGC 51017 228:UGC 11411 194:Dark Ages 170:Milky Way 71:Formation 61:Milky Way 40:Milky Way 3348:Asterism 3147:Category 3036:See also 2960:Galaxies 2687:X-shaped 2518:Peculiar 2460:unbarred 2418:unbarred 2387:Galaxies 2342:Archived 2327:Archived 2241:55131811 2179:55254708 2093:52207639 2038:35610312 1983:73517961 1904:15575071 1803:Archived 1761:13161406 1706:17710039 1584:14543154 1454:14851943 1168:21 March 1005:BBC News 960:16426005 711:See also 593:PHL 293B 583:NGC 3353 578:NGC 2915 573:NGC 1705 568:NGC 1569 470:M59-UCD3 466:M60-UCD1 432:so far. 430:Universe 422:Big Bang 418:Universe 405:(SDSS). 391:Universe 383:galaxies 366:UGCA 281 362:NGC 3353 358:NGC 2915 354:NGC 1705 324:clusters 198:Big Bang 176:and the 112:hydrogen 108:Leo Ring 81:NGC 5264 3384:Portals 3290:Unbound 3205:systems 3202:Stellar 3007:Quasars 2975:Nearest 2970:Largest 2871:cluster 2704:Seyfert 2337:Science 2219:Bibcode 2159:Bibcode 2124:galaxy. 2073:Bibcode 2018:Bibcode 1963:Bibcode 1884:Bibcode 1845:Bibcode 1833:: 155. 1741:Bibcode 1686:Bibcode 1621:Bibcode 1556:Bibcode 1491:Bibcode 1426:Bibcode 1360:Bibcode 1311:Bibcode 1231:Bibcode 1126:Bibcode 1095:15 June 1047:Bibcode 938:Bibcode 836:29 July 783:22 June 757:22 June 703:UGC 685 688:Gallery 482:parsecs 3219:Galaxy 3159:Portal 2990:Spiral 2893:merger 2672:Quasar 2657:Blazar 2595:corona 2511:barred 2487:spiral 2435:barred 2430:anemic 2425:Spiral 2413:barred 2260:6 July 2239:  2177:  2091:  2036:  1981:  1902:  1784:  1759:  1704:  1649:  1641:  1582:  1574:  1519:826898 1517:  1509:  1452:  1444:  1386:  1378:  1219:: 65. 1162:Hubble 1089:Hubble 1065:  958:  891:Hubble 681:DDO 68 563:Leo II 258:(dIrr) 172:, the 130:ripped 116:helium 53:galaxy 3434:Stars 3212:Bound 3027:Voids 2952:Lists 2930:Walls 2866:group 2851:Field 2745:ELIRG 2740:HLIRG 2735:ULIRG 2692:DRAGN 2682:Radio 2662:LINER 2556:Bulge 2528:Polar 2237:S2CID 2209:arXiv 2175:S2CID 2149:arXiv 2089:S2CID 2063:arXiv 2034:S2CID 2008:arXiv 1979:S2CID 1953:arXiv 1921:(PDF) 1900:S2CID 1874:arXiv 1835:arXiv 1757:S2CID 1731:arXiv 1702:S2CID 1676:arXiv 1647:S2CID 1611:arXiv 1580:S2CID 1546:arXiv 1515:S2CID 1481:arXiv 1450:S2CID 1416:arXiv 1384:S2CID 1350:arXiv 1286:(PDF) 1275:(PDF) 1253:(PDF) 1221:arXiv 1063:S2CID 1037:arXiv 956:S2CID 928:arXiv 558:Leo I 548:IC 10 387:stars 328:stars 268:(dS) 57:stars 2985:Ring 2590:Halo 2578:Disc 2523:Ring 2403:Disc 2308:2019 2283:2014 2262:2016 2115:2013 1928:2023 1782:ISSN 1639:ISSN 1572:ISSN 1507:ISSN 1442:ISSN 1376:ISSN 1196:2011 1188:WISE 1170:2015 1097:2015 1012:2018 986:2009 899:2011 869:2012 838:2015 810:2016 785:2023 759:2023 364:and 332:blue 314:, a 242:(dE) 156:The 114:and 93:NASA 34:The 2762:pea 2551:Bar 2227:doi 2205:839 2167:doi 2145:808 2081:doi 2059:775 2026:doi 2004:812 1971:doi 1949:802 1892:doi 1870:128 1831:327 1749:doi 1694:doi 1672:134 1629:doi 1607:921 1564:doi 1542:693 1499:doi 1477:129 1434:doi 1412:626 1368:doi 1319:doi 1307:107 1217:421 1158:ESA 1134:doi 1122:110 1085:ESA 1055:doi 1033:676 946:doi 924:376 887:ESA 476:, r 310:In 123:Leo 95:'s 3446:: 2499:cD 2299:. 2235:. 2225:. 2217:. 2203:. 2197:. 2173:. 2165:. 2157:. 2143:. 2117:. 2087:. 2079:. 2071:. 2057:. 2032:. 2024:. 2016:. 2002:. 1977:. 1969:. 1961:. 1947:. 1898:. 1890:. 1882:. 1868:. 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Index

Dwarf Galaxy

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

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