NGC 2139
{{Short description|Galaxy in the constellation Lepus}}
{{Infobox galaxy
| name = NGC 2139
| image = File:NGC 2139 legacy dr10.jpg
| image_scale = 1.3
| caption = Legacy Surveys DR10 image of NGC 2139
| alt =
| epoch = J2000
| constellation name = Lepus
| h_radial_v = {{val|1836|u=km/s|fmt=commas}}
| gal_v = {{val|1649|u=km/s|fmt=commas}}
| dist_pc =
| dist_ly = {{cvt|36.98|Mpc|Mly|order=flip|lk=on}}
| group_cluster =
| mass =
| mass_light_ratio =
| size =
| stars = {{val|9.1|e=9|ul=Solar mass}}
| absmag_v =
| size_v = {{val|2.40|x|1.9|ul=arcminute}}
| half_light_radius_pc =
| half_light_radius_arcminsec =
| h1_scale_length_pc =
| h1_scale_length_arcminsec =
| xray_radius_pc =
| xray_radius_arcminsec =
| notes = Bulgeless
| names = {{odlist | NGC=2139 | Arp= | PGC=18258 | UGC= | MCG=-04-15-005 | IC=2154 | HIPASS=J0601-23 | LEDA=18258 }}
| references =
}}
NGC 2139 is a barred spiral galaxy in the constellation of Lepus. It was discovered on November 17, 1784, by the German-English astronomer William Herschel. The galaxy is located at a distance of {{convert|36.98|Mpc|e6ly|order=flip|lk=on}} from the Sun and is receding with a radial velocity of 1,836 km/s.
The overall form of this galaxy is irregular with spiral arms and the appearance of tidal features, suggesting a potential recent merger event. There is no central bulge of significance. The morphological classification is SAB(rs)cd, which indicates a barred spiral galaxy (SAB) with a transitional inner ring structure (rs) and loosely wound spiral arms (cd). It is a star forming galaxy with a formation rate of {{val|3.8|ul=Solar mass}}·yr−1. There is a plume extending to the south of the galaxy.
A luminous filament runs through the center of the galaxy, which includes a small nuclear cluster. This cluster is only {{val|4.1|e=7|u=years}} old with a mass of {{val|8.3|e=5|ul=Solar mass}}. It is offset at a distance of 320 pc from the center of the galaxy and may come to rest there on a time scale of around 100 million years. The cluster is a source of X-ray emission.
Supernovae
Three supernovae have been observed in NGC 2139:
- Robert Evans and associates discovered SN 1995ad (type II, mag. 14) on 28 September 1995.{{cite web | website=Transient Name Server | title=SN 1995ad | url=https://www.wis-.tns.org/object/1995ad | publisher = IAU | access-date=15 August 2024}} It was positioned in one of the spiral arms, {{val|25|u=arcsecond}} west and {{val|5|u=arcsecond}} south of the NGC 2139 nucleus. The recession velocity was consistent with that of the host galaxy.
- SN 2022qhy (type Ibn, mag. 15.889) was discovered by ATLAS on 1 August 2022.{{cite web | website=Transient Name Server | title=SN 2022qhy | url=https://www.wis-.tns.org/object/2022qhy | publisher = IAU | access-date=15 August 2024}}
- SN 2023zcu (type II, mag. 19.054) was discovered by ATLAS on 8 December 2023.{{cite web | website=Transient Name Server | title=SN 2023zcu | url=https://www.wis-.tns.org/object/2023zcu | publisher = IAU | access-date=15 August 2024}}
References
{{reflist|refs=
| title=NGC 2139 | access-date=2024-03-07
| postscript=. | mode = cs2 }}
| title=The Two Micron All Sky Survey (2MASS)
| 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. | display-authors=1
| journal=The Astronomical Journal
| date=1 February 2006 |volume=131 |issue=2 |pages=1163–1183
| bibcode=2006AJ....131.1163S |s2cid=18913331
| doi=10.1086/498708
| issn=0004-6256 |doi-access=free }}
| title=X-ray emission from star-forming galaxies - II. Hot interstellar medium
| display-authors=1 | last1=Mineo | first1=S.
| last2=Gilfanov | first2=M. | last3=Sunyaev | first3=R.
| journal=Monthly Notices of the Royal Astronomical Society
| date=November 1, 2012 | volume=426 | issue=3 | pages=1870–1883
| doi=10.1111/j.1365-2966.2012.21831.x | doi-access=free
| arxiv=1205.3715
| bibcode=2012MNRAS.426.1870M | s2cid=85507925 }}
| title=Third Reference Catalogue of Bright Galaxies
| last1=De Vaucouleurs | first1=Gerard | last2=De Vaucouleurs| first2=Antoinette
| last3=Corwin | first3=Herold G. | last4=Buta | first4=Ronald J.
| last5=Paturel | first5=Georges | last6=Fouque | first6=Pascal
| display-authors=1 | year=1991
| bibcode=1991rc3..book.....D }}
| last1=Tully | first1=R. Brent | last2=Courtois | first2=Hélène M.
| last3=Sorce | first3=Jenny G. | display-authors=1
| title=Cosmicflows-3 | journal=The Astronomical Journal
| volume=152 | issue=2 | id=50 | page=21 | date=August 2016
| doi=10.3847/0004-6256/152/2/50 | bibcode=2016AJ....152...50T
| arxiv=1605.01765 | s2cid=250737862 | doi-access=free }}
| title=Moderately luminous Type II supernovae
| last1=Inserra | first1=C. | last2=Pastorello | first2=A.
| last3=Turatto | first3=M. | last4=Pumo | first4=M. L.
| last5=Benetti | first5=S. | last6=Cappellaro | first6=E.
| last7=Botticella | first7=M. T. | last8=Bufano | first8=F.
| last9=Elias-Rosa | first9=N. | last10=Harutyunyan | first10=A.
| last11=Taubenberger | first11=S. | last12=Valenti | first12=S.
| last13=Zampieri | first13=L. | display-authors=1
| journal=Astronomy & Astrophysics
| volume=555 | at=id. A142 | date=July 2013
| doi=10.1051/0004-6361/201220496 | arxiv=1210.1411
| bibcode=2013A&A...555A.142I }}
| title=Supernova 1995ad in NGC 2139
| display-authors=1 | last1=Evans | first1=R.
| last2=Benetti | first2=S. | last3=Grupe | first3=D.
| journal=IAU Circular
| issue=6239 | page=1 | date=September 1995
| editor1-last=Green | editor1-first=D. W. E.
| bibcode=1995IAUC.6239....1E }}
| title=Chandra Observations of the Nuclear Star Cluster and Ultraluminous X-Ray Sources in NGC 2139
| last1=Shields | first1=Joseph C. | last2=Böker | first2=Torsten
| last3=Ho | first3=Luis C. | last4=Rix | first4=Hans-Walter
| last5=van der Marel | first5=Roeland P. | last6=Walcher | first6=C. Jakob
| display-authors=1 | journal=The Astronomical Journal
| volume=144 | issue=1 | at=id. 12 | date=July 2012
| doi=10.1088/0004-6256/144/1/12 | arxiv=1205.3191
| bibcode=2012AJ....144...12S }}
| title=Caught in Formation: The Nuclear-Cluster-to-Be in NGC 2139
| last1=Andersen | first1=David R. | last2=Walcher | first2=C. Jakob
| last3=Böker | first3=Torsten | last4=Ho | first4=Luis C.
| last5=van der Marel | first5=Roeland P. | last6=Rix | first6=Hans-Walter
| last7=Shields | first7=Joseph C. | display-authors=1
| journal=The Astrophysical Journal
| volume=688 | issue=2 | pages=990–999 | date=December 2008
| doi=10.1086/592342 | arxiv=0808.1321
| bibcode=2008ApJ...688..990A }}
| title=X-ray Properties of Star Clusters in NGC 2139
| first1=J. | last1=Shields | first2=T. | last2=Böker
| first3=L. | last3=Ho | first4=H.-W. | last4=Rix
| first5=R. | last5=van der Marel | first6=C. J. | last6=Walcher
| display-authors=1 | publisher=European Southern Observatory | year=2010
| url=https://www.eso.org/sci/meetings/2010/cmo2010/Presentations/Day2/shields_eso2010.pdf
| access-date=2024-03-07 }}
| title=NGC Objects: NGC 2100 - 2149
| work=Celestial Atlas | first=Courtney | last=Seligman
| url=https://cseligman.com/text/atlas/ngc21.htm#2139
| access-date=2024-03-07 }}
| title=Revised NGC Data for NGC 2139
| first=Hartmut | last=Frommert
| publisher=Students for the Exploration and Development of Space
| url=https://spider.seds.org/ngc/revngcic.cgi?NGC%202139
| access-date=2024-03-07 }}
}}
{{NGC objects:2000-2499}}
{{Lepus (constellation)}}
{{DEFAULTSORT:NGC 2139}}
Category:Barred spiral galaxies
Category:Lepus (constellation)