A void galaxy is a galaxy located in a cosmological void. Few galaxies exist in voids; most are located in sheets, walls and filaments that surround voids and supervoids. Many void galaxies are connected through void filaments or tendrils, less massive versions of the regular galaxy filaments that surround voids. These filaments are often straighter than their non-void counterparts due to the lack of influence by surrounding filaments. These filaments can even be rich enough to form poor galaxy clusters. The void galaxies themselves are thought to represent pristine examples of galactic evolution, having few neighbours, and likely to have formed from pure intergalactic gas.

Formation It is theorised by many astrophysicists that void galaxies are the result of large galactic filaments being pulled by the gravity of a major super cluster out of the less densely populated areas, causing voids such as the Boötes Void to grow. Galaxies such as the spiral galaxy MCG+01-02-015 are sometimes left behind from such events.

List of void galaxies

GalaxyPicture Void Filament Notes CommentsPisces ALocal VoidPisces BNGC 7077NGC 6503NGC 6789MCG +01-02-0150049+05 VoidLEDA 1852 (Pisces) LEDA 3096313Boötes Void Emission-line galaxy LEDA 84225 AGN X-ray source LEDA 87383 Starburst galaxy LEDA 2790865 LINER galaxy, Emission-line Galaxy LEDA 87386 Starburst galaxy LEDA 87385 Interacting galaxy pair LEDA 101388 Seyfert 2 galaxy LEDA 101389 Elliptical galaxy LEDA 100709 Starburst galaxy LEDA 54705 Interacting galaxy pair MCG +09-25-043 AGN X-ray source Markarian 845 Seyfert 1 (X-ray source) LEDA 87384 Emission-line Galaxy LEDA 2103063 LEDA 1147360Active galaxy nucleus candidateSDSS J123644.69+003348.1Active galaxy nucleus candidateLEDA 1166549HII galaxy2dFGRS TGN266Z051Seyfert 12MASX J12401820-0011064Seyfert 1LEDA 1160233Active galaxy nucleus candidateLEDA 1161018LEDA 1186186Active galaxy nucleus candidateLEDA 1110510Active galaxy nucleus candidateMCG +00-25-010Seyfert 1GAMA 279943Active galaxy nucleus candidateLEDA 2653526Active galaxy nucleus candidateSHOC 239HII galaxyLEDA 2790881Seyfert 1MaNGA 43-22Active galaxy nucleus candidateLEDA 29070Active galaxy nucleus candidateLEDA 28747Active galaxy nucleus candidate LEDA 2534153Active galaxy nucleus candidateMCG +10-15-008Active galaxy nucleus candidateMarkarian 234HII galaxy, Active galaxy nucleus candidateLEDA 2677771Seyfert 1LEDA 3129299Active galaxy nucleus candidateLEDA 3132190HII galaxyNSA 12777Seyfert 1LEDA 2675385Active galaxy nucleus candidateSHOC 306HII galaxyASK 047216.0Active galaxy nucleus candidateMarkarian 89Seyfert 1SHOC 461HII galaxyLEDA 2678872HII galaxy, Seyfert 1NSA 12860Active galaxy nucleus candidateLEDA 3139336LEDA 2815866Emission-line GalaxyLEDA 2690461Active galaxy nucleus candidateZ 19-3Active galaxy nucleus candidateLEDA 4006977LEDA 1206223Active galaxy nucleus candidateNSA 14156LEDA 1214845Active galaxy nucleus candidateLEDA 1223466Active galaxy nucleus candidateKK 242satellite galaxy of NGC 6503

See also

Field galaxy

References

External links