PGC 2456
{{Short description|Galaxy in the constellation Cetus}}
{{Infobox galaxy|name=PGC 2456|image=File:PGC2456 Potw2309a.jpg|caption=Hubble Space Telescope of PGC 2456 and its surrounding galaxies PGC 2800504 and 2MASX J00413329-0914569|constellation name=Cetus|z=0.044674|dist_ly=617 Mly (189.17 Mpc)|group_cluster=Abell 85|names=PGC 2456, PGC 93189, NVSS J004130-091545, KAZ 364,
WINGS J004130.29-091546.0, NSA 127503, 2CXO J001430.3-091546, JO201|type=cD, Sy|epoch=J2000|ra=00h 41m 30.29s|dec=-09d 15m 45.85s|appmag_v=0.10|appmag_b=0.13}}
PGC 2456 known as KAZ 364 and JO201, is a spiral galaxy located in the constellation of Cetus. It is located 617 million light-years away from the Solar System.{{Cite web |title=Your NED Search Results |url=https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=84660&objname=1&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1 |access-date=2024-04-20 |website=ned.ipac.caltech.edu}} A member of Abell 85, PGC 2456 lies 360 kiloparsecs from the brightest cluster galaxy, Holmberg 15A.{{Cite journal |last1=Ramatsoku |first1=M. |last2=Serra |first2=P. |last3=Poggianti |first3=B. M. |last4=Moretti |first4=A. |last5=Gullieuszik |first5=M. |last6=Bettoni |first6=D. |last7=Deb |first7=T. |last8=Franchetto |first8=A. |last9=Gorkom |first9=J. H. van |last10=Jaffé |first10=Y. |last11=Tonnesen |first11=S. |last12=Verheijen |first12=M. a. W. |last13=Vulcani |first13=B. |last14=Andati |first14=L. a. L. |last15=Blok |first15=E. de |date=2020-08-01 |title=GASP - XXVI. HI gas in jellyfish galaxies: The case of JO201 and JO206 |url=https://www.aanda.org/articles/aa/abs/2020/08/aa37759-20/aa37759-20.html |journal=Astronomy & Astrophysics |language=en |volume=640 |pages=A22 |arxiv=2006.11543 |bibcode=2020A&A...640A..22R |doi=10.1051/0004-6361/202037759 |issn=0004-6361}}
PGC 2456 contains an active galactic nucleus.{{Cite journal |last1=Radovich |first1=Mario |last2=Poggianti |first2=Bianca |last3=Jaffé |first3=Yara L |last4=Moretti |first4=Alessia |last5=Bettoni |first5=Daniela |last6=Gullieuszik |first6=Marco |last7=Vulcani |first7=Benedetta |last8=Fritz |first8=Jacopo |date=2019-03-19 |title=GASP – XIX. AGN and their outflows at the centre of jellyfish galaxies |journal=Monthly Notices of the Royal Astronomical Society |volume=486 |issue=1 |pages=486–503 |doi=10.1093/mnras/stz809 |doi-access=free |issn=0035-8711|arxiv=1905.08972 }} It is a low-excitation radio galaxy,{{Cite journal |last1=Lin |first1=Yen-Ting |last2=Huang |first2=Hung-Jin |last3=Chen |first3=Yen-Chi |date=2018-05-01 |title=An Analysis Framework for Understanding the Origin of Nuclear Activity in Low-power Radio Galaxies |journal=The Astronomical Journal |volume=155 |issue=5 |pages=188 |doi=10.3847/1538-3881/aab5b4 |doi-access=free |arxiv=1803.02482 |bibcode=2018AJ....155..188L |issn=0004-6256}} with a stellar mass of 3.6 x 1010 M⊙.{{Cite journal |last1=Vulcani |first1=Benedetta |last2=Poggianti |first2=Bianca M. |last3=Gullieuszik |first3=Marco |last4=Moretti |first4=Alessia |last5=Tonnesen |first5=Stephanie |last6=Jaffé |first6=Yara L. |last7=Fritz |first7=Jacopo |last8=Fasano |first8=Giovanni |last9=Bettoni |first9=Daniela |date=2018-10-17 |title=Enhanced Star Formation in Both Disks and Ram-pressure-stripped Tails of GASP Jellyfish Galaxies |journal=The Astrophysical Journal Letters |volume=866 |issue=2 |pages=L25 |doi=10.3847/2041-8213/aae68b |doi-access=free |arxiv=1810.05164 |bibcode=2018ApJ...866L..25V |issn=2041-8205}}
PGC 2456 is considered a jellyfish galaxy due to the fact the tendrils are seen drifting downwards from its core.{{Cite web |last=information@eso.org |title=Galactic Seascape |url=https://www.spacetelescope.org/images/potw2309a/ |access-date=2024-04-20 |website=www.spacetelescope.org |language=en}}{{Cite web |last=Anderson |first=Natali |date=2023-02-27 |title=Hubble Finds Star-Forming Clumps in Six Jellyfish Galaxies {{!}} Sci.News |url=https://www.sci.news/astronomy/hubble-star-forming-clumps-jellyfish-galaxies-11690.html |access-date=2024-07-26 |website=Sci.News: Breaking Science News |language=en-US}} It exhibits intensive star formation in its tendrils and is the Ultraviolet-brightest cluster galaxy in Abell 85.{{Cite journal |last1=George |first1=K. |last2=Poggianti |first2=B. M. |last3=Gullieuszik |first3=M. |last4=Fasano |first4=G. |last5=Bellhouse |first5=C. |last6=Postma |first6=J. |last7=Moretti |first7=A. |last8=Jaffé |first8=Y. |last9=Vulcani |first9=B. |last10=Bettoni |first10=D. |last11=Fritz |first11=J. |last12=Côté |first12=P. |last13=Ghosh |first13=S. K. |last14=Hutchings |first14=J. B. |last15=Mohan |first15=R. |date=2018-09-01 |title=UVIT view of ram-pressure stripping in action: star formation in the stripped gas of the GASP jellyfish galaxy JO201 in Abell 85 |journal=Monthly Notices of the Royal Astronomical Society |volume=479 |issue=3 |pages=4126–4135 |arxiv=1803.06193 |bibcode=2018MNRAS.479.4126G |doi=10.1093/mnras/sty1452 |doi-access=free |issn=0035-8711}}{{Cite journal |last1=George |first1=Koshy |last2=Poggianti |first2=B. M. |last3=Gullieuszik |first3=M. |last4=Fasano |first4=G. |last5=Bellhouse |first5=C. |last6=Postma |first6=J. |last7=Moretti |first7=A. |last8=Jaffé |first8=Y. |last9=Vulcani |first9=B. |last10=Bettoni |first10=D. |last11=Fritz |first11=J. |last12=Côté |first12=P. |last13=Ghosh |first13=S. K. |last14=Hutchings |first14=J. B. |last15=Mohan |first15=R. |date=2018-09-21 |title=Ultra-Violet Imaging Telescope view of ram-pressure stripping in action: Star formation in the stripped gas of the GASP jellyfish galaxy JO201 in Abell 85 |journal=Monthly Notices of the Royal Astronomical Society |volume=479 |issue=3 |pages=4126–4135 |doi=10.1093/mnras/sty1452 |doi-access=free |arxiv=1803.06193 |bibcode=2018MNRAS.479.4126G |issn=0035-8711}}
Such jellyfish galaxies are formed when galaxies like PGC 2456, moves through high speeds across the galaxy clusters, causing ram pressure to strip gas. According to studies, researchers estimated PGC 2456 might have lost about 50% of its mass when undergoing ram-pressure stripping.{{Cite journal |last1=Bellhouse |first1=C. |last2=Jaffé |first2=Y. L. |last3=Hau |first3=G. K. T. |last4=McGee |first4=S. L. |last5=Poggianti |first5=B. M. |last6=Moretti |first6=A. |last7=Gullieuszik |first7=M. |last8=Bettoni |first8=D. |last9=Fasano |first9=G. |last10=D'Onofrio |first10=M. |last11=Fritz |first11=J. |last12=Omizzolo |first12=A. |last13=Sheen |first13=Y. -K. |last14=Vulcani |first14=B. |date=2017-07-01 |title=GASP. II. A MUSE View of Extreme Ram-Pressure Stripping along the Line of Sight: Kinematics of the Jellyfish Galaxy JO201 |journal=The Astrophysical Journal |volume=844 |issue=1 |pages=49 |doi=10.3847/1538-4357/aa7875 |doi-access=free |arxiv=1704.05087 |bibcode=2017ApJ...844...49B |issn=0004-637X}}