NGC 986
{{Short description|Barred spiral galaxy in the constellation Fornax}}
{{Infobox galaxy
| name = NGC 986
| image = NGC 986 - ESOs Potw1605a.tif
| image_size =
| upright = 1.5
| caption = NGC 986 taken by the FORS instrument on ESO’s VLT.
| alt =
| epoch = J2000
| pronounce =
| constellation name = Fornax
| h_radial_v = {{val|1942|10|u=km/s|fmt=commas}}
| gal_v =
| dist_pc =
| dist_ly = {{cvt|23.2|Mpc|Mly|order=flip|lk=on}}
56 million ly
| group_cluster = Fornax Cluster
| mass =
| mass_light_ratio =
| size =
| stars =
| absmag_v =
| size_v = {{nowrap|3′.8 × 1′.9}}
| half_light_radius_pc =
| half_light_radius_arcminsec =
| h1_scale_length_pc =
| h1_scale_length_arcminsec =
| xray_radius_pc =
| xray_radius_arcminsec =
| notes =
| names = {{odlist | NGC=986 | 2MASX=J02333434-3902422 | ESO=299-7 | HIPASS=J0233-39 | IRAS=02315-3915 | LEDA=9747 | MCG=-07-06-015 | NVSS=J023334-390237 }}
| references =
}}
NGC 986 is a barred spiral galaxy in the southern constellation of Fornax, located about 76 million light-years away. It was discovered on August 5, 1826, by the Scottish astronomer James Dunlop, who described it as a "faint nebula, of an irregular round figure". The galaxy has an angular size of {{nowrap|3′.8 × 1′.9}} with a visual magnitude of 10.9. It belongs to the Fornax Cluster of galaxies. This galaxy has a nearby companion, NGC 986A, at an angular separation of {{val|17|u=arcminute}}, corresponding to a projected separation of {{val|110|u=kpc}}. The two appear unconnected.
The morphological class of NGC 986 is (R′1)SB(rs)b, indicating this is a barred spiral (SB) with an outer pseudo-ring (R′1), an incomplete inner ring (rs), and moderately wound spiral arms (b). The galactic plane is inclined at an angle of 37° to the line of sight from the Earth. The resulting ellipsoidal profile has its major axis aligned along a position angle of 127°.
The nucleus of NGC 986 is undergoing intense star formation and there is an H II region at the core. The large central bar extends {{val|14|u=kpc|p=~}} and is rich in dense gas. The galaxy contains two large, extended and slightly warped arms that begin at each end of the central bar, forming an S-shape. There may be a tidally-disrupted dwarf galaxy at the end of its northern arm.
One supernova has been observed in NGC 986: SN 2018lei (type Ic, mag. 16.8).[https://www.wis-tns.org/object/2018lei Transient Name Server entry for SN 2018lei.] Retrieved 24 March 2023.
References
{{reflist|refs=
| title=NGC 986 | access-date=2022-01-11 }}
| title=Deep-Sky Companions: Southern Gems
| first=Stephen James | last=O'Meara
| date=2013 | page=44 | isbn=9781139851541
| publisher=Cambridge University Press
| url=https://books.google.com/books?id=BoIsCgAAQBAJ&pg=PA44 }}
| title=The Role of Interactions in the Evolution of Highly Star-forming Early-Type (Sa-Sab) Spiral Galaxies
| last1=Hameed | first1=Salman | last2=Young | first2=Lisa M.
| journal=The Astronomical Journal
| volume=125 | issue=6 | pages=3005–3024 | date=June 2003
| doi=10.1086/375325 | bibcode=2003AJ....125.3005H | s2cid=122421859 | doi-access=free }}
| title=The Two Micron All Sky Survey (2MASS)
| display-authors=1 | 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.
| journal=The Astronomical Journal
| date=1 February 2006 | volume=131 | issue=2 | pages=1163–1183
| bibcode=2006AJ....131.1163S | issn=0004-6256
| doi=10.1086/498708 | s2cid=18913331 | doi-access=free }}
| title=ASTE CO(3-2) Observations of the Southern Barred Spiral Galaxy NGC 986: a Large Gaseous Bar Filled with a Dense Molecular Medium
| last1=Kohno | first1=Kotaro | last2=Tosaki | first2=Tomoka
| last3=Miura | first3=Rie | last4=Muraoka | first4=Kazuyuki
| last5=Sawada | first5=Tsuyoshi | last6=Nakanishi | first6=Kouichiro
| last7=Kuno | first7=Nario | last8=Sakai | first8=Takeshi
| last9=Sorai | first9=Kazuo | last10=Kamegai | first10=Kazuhisa
| last11=Tanaka | first11=Kunihiko | last12=Okuda | first12=Takeshi
| last13=Endo | first13=Akira | last14=Hatsukade | first14=Bunyo
| last15=Sameshima | first15=Masahiro | last16=Ezawa | first16=Hajime
| last17=Sakamoto | first17=Seiichi | last18=Kamazaki | first18=Takeshi
| last19=Yamaguchi | first19=Nobuyuki | last20=Cortés | first20=Juan
| last21=Tamura | first21=Yoichi | last22=Fukuhara | first22=Masayuki
| last23=Iono | first23=Daisuke | last24=Kawabe | first24=Ryohei
| journal=Publications of the Astronomical Society of Japan
| display-authors=1 | volume=60 | issue=3 | pages=457–464
| date=June 2008 | doi=10.1093/pasj/60.3.457
| arxiv=0805.1491 | bibcode=2008PASJ...60..457K }}
| title=An Often Ignored Beauty | date=1 February 2016
| url=http://www.eso.org/public/images/potw1605a/
| website=European Southern Observatory
| access-date=1 February 2016 }}
}}
External links
- {{commons category-inline}}
{{Galaxy}}
{{Catalogs|NGC=986}}
{{NGC objects:500-999}}
{{Fornax}}
{{Sky|02|33|34.349|-|39|02|42.21}}
{{DEFAULTSORT:NGC 986}}
Category:Barred spiral galaxies