IC 5201

{{Short description|Barred spiral galaxy in the constellation of Grus}}

{{Infobox galaxy

| name = IC 5201

| image = IC 5201 - HST - Potw1650a.tif

| caption = The central area of IC 5201 by Hubble Space Telescope{{cite web |title=A closer look at IC 5201 |url=https://www.spacetelescope.org/images/potw1650a/ |website=www.spacetelescope.org |language=en |date=12 December 2016}}

| epoch = J2000

| type = SB(s)cd {{cite web

| title=NASA/IPAC Extragalactic Database

| work=Results for IC 5201

| url=http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=IC+5201

| access-date=2019-01-18 }}

| ra = {{RA|22|20|57.4}}

| dec = {{DEC|-46|02|09}}

| dist_ly = 36.4 ± 17.6 Mly (11.2 ± 5.4 Mpc)

| z = 0.003052 ± 0.000007

| h_radial_v = 915 ± 2 km/s

| appmag_v = 10.8 {{cite web |title=Revised IC Data for IC 5201 |url=http://spider.seds.org/ngc/revngcic.cgi?ic5201 |website=spider.seds.org |access-date=25 November 2018 |archive-url=https://web.archive.org/web/20160310205621/http://spider.seds.org/ngc/revngcic.cgi?IC5201 |archive-date=10 March 2016 |url-status=dead }}

| size_v = 8.5{{prime}} × 3.9{{prime}}

| constellation name = Grus

| notes =

| names = ESO 289-G018, PGC 68618

}}

IC 5201 is a barred spiral galaxy located in the constellation Grus. It is located at a distance of about 35 million light years from Earth, which, given its apparent dimensions, means that IC 5201 is about 90,000 light years across. It was discovered by Joseph Lunt in 1900.{{cite web |last1=Seligman |first1=Courtney |title=IC 5201 (= PGC 68618) |url=https://cseligman.com/text/atlas/ic52.htm#ic5201 |website=Celestial Atlas |access-date=19 November 2018}}

IC 5201 is characterised by its bright bar, that measures 0.6 × 0.16 arcminutes.{{cite book |author1=de Vaucouleurs, Gerard Henri |author2=de Vaucouleurs, Antoinette |author3=Shapley, Harlow |title=Reference catalogue of bright galaxies |date=1964 |publisher = University of Texas Press | location = Austin |bibcode=1964rcbg.book.....D}} The galaxy has multiple thin arms which contain a large number of HII regions, where new stars are born. The largest of these regions have diameter about 5 arcseconds. The galaxy has been found to have HII region activity in its nucleus.{{cite journal |last1=Phillips |first1=M. M. |last2=Charles |first2=P. A. |last3=Baldwin |first3=J. A. |title=Nearby galaxies with Seyfert-like nuclei |journal=The Astrophysical Journal |date=March 1983 |volume=266 |pages=485 |doi=10.1086/160797|bibcode=1983ApJ...266..485P }} The total star formation rate of the galaxy is estimated to be 1.7 {{solar mass|link=yes}} per year.{{cite journal |last1=Ryder |first1=Stuart D. |last2=Dopita |first2=Michael A. |title=The relationship between past and present star formation in galactic disks from CCD surface photometry |journal=The Astrophysical Journal |date=July 1994 |volume=430 |pages=142 |doi=10.1086/174389|bibcode=1994ApJ...430..142R }} The galaxy is close enough so as its stars can be resolved. The brightest of them have apparent magnitude about 21.5.Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington One ultra-luminous X-ray source has been detected in the galaxy.{{cite journal |last1=Mapelli |first1=M. |last2=Ripamonti |first2=E. |last3=Zampieri |first3=L. |last4=Colpi |first4=M. |last5=Bressan |first5=A. |title=Ultra-luminous X-ray sources and remnants of massive metal-poor stars |journal=Monthly Notices of the Royal Astronomical Society |date=17 September 2010 |volume=408 |issue=1 |pages=234–253 |doi=10.1111/j.1365-2966.2010.17048.x|doi-access=free |arxiv=1005.3548 |bibcode=2010MNRAS.408..234M |s2cid=119250204 }}

One supernova has been observed in IC 5201: SN 1978G. It was first reported by J. C. Blades, of the Anglo-Australian Observatory, and R. E. Griffiths, of Center for Astrophysics, on November 24.5 UTC, with apparent magnitude at discovery 13.5. The supernova was detected in its early stages. Spectroscopic observations revealed it was a type II supernova. It was located 1'.6 west and 0'.7 north of the nucleus.{{cite web |title=IAUC 3309: SN IN IC 5201; HEAO 2; H 2155-304 |url=http://www.cbat.eps.harvard.edu/iauc/03300/03309.html |website=Central Bureau for Astronomical Telegrams |publisher=International Astronomical Union |date=29 November 1978}}

IC 5201 is characterised as an isolated galaxy.{{cite journal |last1=Karachentsev |first1=I. D. |last2=Makarov |first2=D. I. |last3=Karachentseva |first3=V. E. |last4=Melnyk |first4=O. V. |title=Catalog of nearby isolated galaxies in the volume z < 0.01 |journal=Astrophysical Bulletin |date=20 March 2011 |volume=66 |issue=1 |pages=1–27 |doi=10.1134/S1990341311010019|arxiv=1103.3990|bibcode=2011AstBu..66....1K |s2cid=118434044 }} Despite the fact IC 5201 does not belong to a galaxy group, it is the largest galaxy in an area of the universe where lie other galaxies too, like NGC 7462.{{cite journal |last1=Karachentsev |first1=Igor D. |last2=Kaisina |first2=Elena I. |last3=Makarov |first3=Dmitry I. |title=Suites of Dwarfs around nearby Giant Galaxies |journal=The Astronomical Journal |date=3 December 2013 |volume=147 |issue=1 |pages=13 |doi=10.1088/0004-6256/147/1/13 |url=http://cdsarc.u-strasbg.fr/viz-bin/nph-Cat/html?J/AJ/147/13/table1.dat|arxiv=1310.6838 |bibcode=2014AJ....147...13K |s2cid=119245124 }}