Void galaxy


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

GalaxyPictureVoidFilamentNotesComments
Pisces ALocal Void
Pisces BLocal Void
NGC 7077Local Void
NGC 6503Local Void
NGC 6789Local Void
MCG +01-02-0150049+05 VoidLEDA 1852
LEDA 3096313Boötes VoidEmission-line galaxy
LEDA 84225Boötes VoidAGN X-ray source
LEDA 87383Boötes VoidStarburst galaxy
LEDA 2790865Boötes VoidLINER galaxy,
Emission-line Galaxy
LEDA 87386Boötes VoidStarburst galaxy
LEDA 87385Boötes VoidInteracting galaxy pair
LEDA 101388Boötes VoidSeyfert 2 galaxy
LEDA 101389Boötes VoidElliptical galaxy
LEDA 100709Boötes VoidStarburst galaxy
LEDA 54705Boötes VoidInteracting galaxy pair
MCG +09-25-043Boötes VoidAGN X-ray source
Markarian 845Boötes VoidSeyfert 1
LEDA 87384Boötes VoidEmission-line Galaxy
LEDA 2103063Boötes VoidEmission-line Galaxy
LEDA 1147360Active galaxy nucleus candidate
SDSS J123644.69+003348.1Active galaxy nucleus candidate
LEDA 1166549HII galaxy
2dFGRS TGN266Z051Seyfert 1
2MASX J12401820-0011064Seyfert 1
LEDA 1160233Active galaxy nucleus candidate
LEDA 1161018
LEDA 1186186Active galaxy nucleus candidate
LEDA 1110510Active galaxy nucleus candidate
MCG +00-25-010Seyfert 1
GAMA 279943Active galaxy nucleus candidate
LEDA 2653526Active galaxy nucleus candidate
SHOC 239HII galaxy
LEDA 2790881Seyfert 1
MaNGA 43-22Active galaxy nucleus candidate
LEDA 29070Active galaxy nucleus candidate
LEDA 28747Active galaxy nucleus candidate
LEDA 2534153Active galaxy nucleus candidate
MCG +10-15-008Active galaxy nucleus candidate
Markarian 234HII galaxy,
Active galaxy nucleus candidate
LEDA 2677771Seyfert 1
LEDA 3129299Active galaxy nucleus candidate
LEDA 3132190HII galaxy
NSA 12777Seyfert 1
LEDA 2675385Active galaxy nucleus candidate
SHOC 306HII galaxy
ASK 047216.0Active galaxy nucleus candidate
Markarian 89Seyfert 1
SHOC 461HII galaxy
LEDA 2678872HII galaxy, Seyfert 1
NSA 12860Active galaxy nucleus candidate
LEDA 3139336
LEDA 2815866Emission-line Galaxy
LEDA 2690461Active galaxy nucleus candidate
Z 19-3Active galaxy nucleus candidate
LEDA 4006977
LEDA 1206223Active galaxy nucleus candidate
NSA 14156
LEDA 1214845Active galaxy nucleus candidate
LEDA 1223466Active galaxy nucleus candidate
KK 242satellite galaxy of NGC 6503