NGC 5559

{{Short description|Galaxy in the constellation Boötes}} {{Infobox galaxy | name = [[New General Catalogue|NGC]] 5559 | image = NGC5559 - HST - Potw1736a.tif | caption = NGC 5559 taken by [[Hubble Space Telescope]].<ref name=Hubble>{{cite web|title=Mysterious supernovae|url=https://esahubble.org/images/potw1736a/|website=www.esahubble.org|access-date=16 July 2024}}</ref> | epoch = [[J2000]] | constellation name = [[Boötes]] | ra = {{RA|14|19|12.792}}<ref name=2MASS>{{cite journal |doi=10.1086/498708 |last1=Skrutskie |first1=Michael F. |last2=Cutri |first2=Roc M. |last3=Stiening |first3=Rae |last4=Weinberg |first4=Martin D. |last5=Schneider |first5=Stephen E. |last6=Carpenter |first6=John M. |last7=Beichman |first7=Charles A. |last8=Capps |first8=Richard W. |last9=Chester |first9=Thomas |last10=Elias |first10=Jonathan H. |last11=Huchra |first11=John P. |last12=Liebert |first12=James W. |last13=Lonsdale |first13=Carol J. |last14=Monet |first14=David G. |last15=Price |first15=Stephan |last16=Seitzer |first16=Patrick |last17=Jarrett |first17=Thomas H. |last18=Kirkpatrick |first18=J. Davy |last19=Gizis |first19=John E. |last20=Howard |first20=Elizabeth V. |last21=Evans |first21=Tracey E. |last22=Fowler |first22=John W. |last23=Fullmer |first23=Linda |last24=Hurt |first24=Robert L. |last25=Light |first25=Robert M. |last26=Kopan |first26=Eugene L. |last27=Marsh |first27=Kenneth A. |last28=McCallon |first28=Howard L. |last29=Tam |first29=Robert |last30=Van Dyk |first30=Schuyler D. |last31=Wheelock |first31=Sherry L. |title=The Two Micron All Sky Survey (2MASS) |journal=The Astronomical Journal |date=1 February 2006 |volume=131 |issue=2 |pages=1163–1183 |bibcode=2006AJ....131.1163S |s2cid=18913331 |issn=0004-6256 |doi-access=free }}</ref> | dec = {{DEC|+24|47|55.01}}<ref name=2MASS/> | h_radial_v = 5103 ± 3 km/s<ref name=SIMBAD/> | z = 0.01717<ref name=SIMBAD/> | dist_ly = {{cvt|77.30|Mpc|Mly|lk=on|order=flip}}<ref name=Crook>{{cite journal|title=Groups of Galaxies in the Two Micron All Sky Redshift Survey|author1=Crook, Aidan C.|author2=Huchra, John P.|author3=Martimbeau, Nathalie|author4=Masters, Karen L.|author5=Jarrett, Tom|author6=Macri, Lucas M.|journal=The Astrophysical Journal|volume=655|issue=2|pages=790–813|date=2007|bibcode=2007ApJ...655..790C|doi=10.1086/510201|arxiv=astro-ph/0610732|s2cid=11672751}}</ref> | group_cluster = | type = SBb<ref name=NED>{{cite web|url=https://ned.ipac.caltech.edu/byname?objname=NGC%205559&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1|title=Results for object NGC 5559 (NGC 5559)|work=NASA/IPAC Extragalactic Database|publisher=California Institute of Technology|access-date=2021-02-17}}</ref> | size = | appmag_v = | appmag_b = 14.81<ref name=LEDA>{{cite web|url=http://leda.univ-lyon1.fr/ledacat.cgi?o=NGC%205559|title=Search specification: NGC 5559|work=HyperLeda|publisher=Université Claude Bernard Lyon 1|access-date=2021-02-17}}</ref> | absmag_v = | size_v = | notes = | names = {{odlist|UGC=9166|MCG=+04-34-017|PGC=51155}}<ref name=SIMBAD>{{cite simbad|title=NGC 5559|accessdate=2021-02-17}}</ref> }}

'''NGC 5559''' is a [[barred spiral galaxy]], located 240 million light-years away in the constellation of [[Boötes]].<ref name=Hubble/> It was discovered on April 10, 1785, by the astronomer [[William Herschel]].<ref name=cseligman>{{cite web|url=http://cseligman.com/text/atlas/ngc55a.htm#5559|title=New General Catalogue objects: NGC 5550 - 5599|author=Seligman, Courtney|website=cseligman.com|access-date=2021-02-17}}</ref>

In 2001, a [[type Ib supernova]] was detected within NGC 5559, and was subsequently designated '''SN 2001co'''.<ref>{{cite simbad|title= SN 2001co|accessdate=2021-02-17}}</ref><ref>[https://www.wis-tns.org/object/2001co Transient Name Server entry for SN 2001co.] Retrieved 16 July 2024.</ref> However, in 2003, the supernova was identified as a [[calcium-rich supernova]], as it had strong [[spectral line]]s characteristic of [[calcium]].<ref>{{cite web | title=Central Bureau for Astronomical Telegrams, Circular No. 8159 | last = Green | first = Daniel W. E. | url=http://www.cbat.eps.harvard.edu/iauc/08100/08159.html#Item2 | date = June 30, 2003 | access-date=10 August 2024}}</ref> The progenitors of these calcium-rich supernovae are still a mystery.<ref name=Hubble/>

==See also== * [[Spiral galaxy]]

==References== {{reflist}}

==External links== * {{Commons category-inline}} * {{cite simbad|title=NGC 5559|access-date=4 September 2017}}

[[Category:Barred spiral galaxies]] [[Category:Boötes]] [[Category:NGC objects|5559]] [[Category:Principal Galaxies Catalogue objects|51155]] [[Category:UGC objects|9166]]