NGC 5419

{{Short description|Galaxy in the constellation Centaurus}}

{{Sky|14|03|38.7349|-|33|58|41.809}}

{{Infobox Galaxy

| name = NGC 5419

| image = 250px

| caption= The elliptical galaxy NGC{{nbsp}}5419.

| constellation name = Centaurus

| epoch = J2000

| type = E{{cite web

| publisher = NASA and Caltech

| website=NASA/IPAC Extragalactic Database

| title=Results for object NGC 5419

| url=https://ned.ipac.caltech.edu/byname?objname=NGC+5419

| access-date=28 July 2024}}

| ra = {{RA|14|03|38.7349}}

| dec = {{DEC|-33|58|41.809}}

| dist_ly = {{convert|64.53 ± 4.54|Mpc|Mly|abbr=on|lk=on|order=flip}}

| group_cluster = NGC 5488 Group (LGG 369)

| z = 0.013763

| h_radial_v = 4126 ± 15 km/s

| appmag_v = 10.8

| size_v = 4.1' x 3.3'

| size = ~{{convert|131.42|kpc|ly|abbr=on|lk=on|order=flip}} (estimated)

| names = {{ odlist | PGC= 50100 | MCG= -06-31-019 | 2MASX= J14033877-3358422}}, ESO{{nbsp}}384-{{nbsp}}G{{nbsp}}039

}}

NGC{{nbsp}}5419 is a large elliptical galaxy in the constellation of Centaurus. Its velocity with respect to the cosmic microwave background is 4,375 ± 23{{nbsp}}km/s, which corresponds to a Hubble distance of 64.5 ± 4.5{{nbsp}}Mpc (~210{{nbsp}}million light-years). It was discovered by British astronomer John Herschel on 1 May 1834.{{cite web | url = https://cseligman.com/text/atlas/ngc54.htm#5419 | title = New General Catalogue Objects: NGC{{nbsp}}5419 | last = Seligman | first = Courtney | website = Celestial Atlas | access-date = 13 December 2024}}

NGC{{nbsp}}5419 is the brightest cluster galaxy of the galaxy cluster, Abell{{nbsp}}S0753.{{Cite journal |last1=Coziol |first1=R. |last2=Andernach |first2=H. |last3=Caretta |first3=C. A. |last4=Alamo-Martínez |first4=K. A. |last5=Tago |first5=E. |date=2009-06-01 |title=The Dynamical State of Brightest Cluster Galaxies and The Formation of Clusters |url=https://ui.adsabs.harvard.edu/abs/2009AJ....137.4795C |journal=The Astronomical Journal |volume=137 |issue=6 |pages=4795–4809 |doi=10.1088/0004-6256/137/6/4795 |arxiv=0903.2360 |bibcode=2009AJ....137.4795C |issn=0004-6256}} It contains a large core with a radius span of 1.58 arcsec (≈55 pc). In addition, it has a double nucleus, indicating the presence of two supermassive black holes in the center with a separation gap of only ≈70 pc.{{Cite journal |last1=Mazzalay |first1=Ximena |last2=Thomas |first2=Jens |last3=Saglia |first3=Roberto P. |last4=Wegner |first4=Gary A. |last5=Bender |first5=Ralf |last6=Erwin |first6=Peter |last7=Fabricius |first7=Maximilian H. |last8=Rusli |first8=Stephanie P. |date=2016-11-01 |title=The supermassive black hole and double nucleus of the core elliptical NGC 5419 |journal=Monthly Notices of the Royal Astronomical Society |volume=462 |issue=3 |pages=2847–2860 |doi=10.1093/mnras/stw1802 |doi-access=free |arxiv=1607.06466 |bibcode=2016MNRAS.462.2847M |issn=0035-8711}}{{Cite journal |last1=Neureiter |first1=Bianca |last2=Thomas |first2=Jens |last3=Rantala |first3=Antti |last4=Naab |first4=Thorsten |last5=Mehrgan |first5=Kianusch |last6=Saglia |first6=Roberto |last7=de Nicola |first7=Stefano |last8=Bender |first8=Ralf |date=2023-06-01 |title=The isotropic center of NGC 5419 -- A core in formation? |journal=The Astrophysical Journal |volume=950 |issue=1 |pages=15 |doi=10.3847/1538-4357/accffa |doi-access=free |arxiv=2305.03078 |bibcode=2023ApJ...950...15N |issn=0004-637X}}{{Cite journal |last1=Arzoumanian |first1=Zaven |last2=Baker |first2=Paul T. |last3=Brazier |first3=Adam |last4=Brook |first4=Paul R. |last5=Burke-Spolaor |first5=Sarah |last6=Becsy |first6=Bence |last7=Charisi |first7=Maria |last8=Chatterjee |first8=Shami |last9=Cordes |first9=James M. |last10=Cornish |first10=Neil J. |last11=Crawford |first11=Fronefield |last12=Cromartie |first12=H. Thankful |last13=Decesar |first13=Megan E. |last14=Demorest |first14=Paul B. |last15=Dolch |first15=Timothy |date=2021-06-01 |title=The NANOGrav 11 yr Data Set: Limits on Supermassive Black Hole Binaries in Galaxies within 500 Mpc |journal=The Astrophysical Journal |volume=914 |issue=2 |pages=121 |doi=10.3847/1538-4357/abfcd3 |doi-access=free |arxiv=2101.02716 |bibcode=2021ApJ...914..121A |issn=0004-637X}}