Jellyfish galaxy

A jellyfish galaxy is a type of galaxy found in galaxy clusters. They are characterised by ram pressure stripping of gas from the affected galaxy by the intracluster medium, triggering starbursts along a tail of gas.[1]

Jellyfish galaxies have been seen in a number of galaxy clusters including Abell 2125 (redshift z=0.20; ACO 2125 C153);[2][1] Abell 2667 (z=0.23; G234144−260358);[2][1] Abell 2744 (z=0.31; ACO 2744 Central Jellyfish;[3] HLS001427–30234/ACO 2744 F0083;[2][1][3][4] GLX001426–30241 / ACO 2744 F0237 / ACO 2733 CN104;[3][4] MIP001417–302303 / ACO 2744 F1228;[3][4] HLS001428–302334;[4] GLX001354–302212[4] ).

NASA's Hubble Finds Life is Too Fast, Too Furious for This Runaway Galaxy (12952512944)
Ram pressure stripping of gas from a galaxy in ESO 137-001.


Example of a jellyfish galaxy JO204

Jellyfish galaxy JO204 taken by ESO's MUSE instrument.[5]

Of bent time and jellyfish SDSS J1110+6459

Jellyfish galaxy in SDSS J1110+6459, visible next to the cluster and apparently dripping bright blue material.[6]


  1. ^ a b c d Harald Ebeling; Lauren N. Stephenson; Alastair C. Edge (1 November 2013). "Jellyfish: Evidence of Extreme Ram-pressure Stripping in Massive Galaxy Clusters". The Astrophysical Journal Letters (published 15 January 2014). 781 (2): L40. arXiv:1312.6135. Bibcode:2014ApJ...781L..40E. doi:10.1088/2041-8205/781/2/L40. L40.
  2. ^ a b c Bob Yirka (30 January 2014). "Hubble images spawn theory of how spiral galaxies turn into jellyfish before becoming elliptical".
  3. ^ a b c d Owers, Matt S.; Couch, Warrick J.; Nulsen, Paul E. J.; Randall, Scott W. (13 December 2011). "Shocking Tails in the Major Merger Abell 2744". The Astrophysical Journal Letters (published 16 April 2012). 750 (1): L23. arXiv:1204.1052. Bibcode:2012ApJ...750L..23O. doi:10.1088/2041-8205/750/1/L23. L23.
  4. ^ a b c d e Rawle, T. D.; Altieri, B.; Egami, E.; Pérez-González, P. G.; Richard, J.; Santos, J. S.; Valtchanov, I.; Walth, G.; Bouy, H.; Haines, C. P.; Okabe, N. (4 March 2014). "Star formation in the massive cluster merger Abell 2744". Monthly Notices of the Royal Astronomical Society (published 4 June 2014). 442 (1): 196–206. arXiv:1405.1046. Bibcode:2014MNRAS.442..196R. doi:10.1093/mnras/stu868.
  5. ^ "Supermassive Black Holes Feed on Cosmic Jellyfish - ESO's MUSE instrument on the VLT discovers new way to fuel black holes". Retrieved 17 August 2017.
  6. ^ "Of bent time and jellyfish". Retrieved 12 November 2018.
Coma Filament

Coma Filament is a galaxy filament. The filament contains the Coma Supercluster of galaxies and forms a part of the CfA2 Great Wall.

ESO 137-001

ESO 137-001 is a barred spiral galaxy located in the constellation Triangulum Australe and in the cluster Abell 3627. As the galaxy moves to the center of the cluster at 7 million kilometers per hour , it is stripped by hot gas thus creating a 260,000 light-year long tail. This is called ram pressure stripping. The intergalactic gas in the Abell 3627 is 180 million degrees Fahrenheit which causes star formation in the tails.

Lynx–Ursa Major Filament

Lynx–Ursa Major Filament (LUM Filament) is a galaxy filament.The filament is connected to and separate from the Lynx–Ursa Major Supercluster.

Perseus–Pegasus Filament

Perseus–Pegasus Filament is a galaxy filament containing the Perseus-Pisces Supercluster and stretching for roughly a billion light years (or over 300/h Mpc). Currently, it is considered to be one of the largest known structures in the universe. This filament is adjacent to the Pisces–Cetus Supercluster Complex.

Radio Galaxy Zoo

Radio Galaxy Zoo (RGZ) is an internet crowdsourced citizen science project that seeks to locate supermassive black holes in distant galaxies. It is hosted by the web portal Zooniverse. The scientific team want to identify black hole/jet pairs and associate them with the host galaxies. Using a large number of classifications provided by citizen scientists they hope to build a more complete picture of black holes at various stages and their origin. It was initiated in 2010 by Ray Norris in collaboration with the Zooniverse team, and was driven by the need to cross-identify the millions of extragalactic radio sources that will be discovered by the forthcoming Evolutionary Map of the Universe survey. RGZ is now led by scientists Julie Banfield and Ivy Wong. RGZ started operations on 17 December 2013.

Ursa Major Filament

Ursa Major Filament is a galaxy filament. The filament is connected to the CfA Homunculus, a portion of the filament forms a portion of the "leg" of the Homunculus.

Active nuclei
Energetic galaxies
Low activity
See also

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