NGC 986 - Misplaced Pages

Barred spiral galaxy in the constellation Fornax

NGC 986
NGC 986 taken by the FORS instrument on ESO’s VLT.
Observation data (J2000 epoch)
Constellation	Fornax
Right ascension	02 33 34.349
Declination	−39° 02′ 42.21″
Redshift	0.006606
Heliocentric radial velocity	1,942±10 km/s
Distance	76 Mly (23.2 Mpc) 56 million ly
Group or cluster	Fornax Cluster
Apparent magnitude (V)	10.9
Apparent magnitude (B)	11.74
Characteristics
Type	(R′₁)SB(rs)b
Apparent size (V)	3′.8 × 1′.9
Other designations
IRAS 02315-3915, 2MASX J02333434-3902422, NGC 986, LEDA 9747, MCG -07-06-015

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 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 17′, corresponding to a projected separation of 110 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 ~14 kpc 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).

References

^ "An Often Ignored Beauty". European Southern Observatory. 1 February 2016. Retrieved 1 February 2016.
^ Skrutskie, Michael F.; et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
^ "NGC 986". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2022-01-11.
^ Kohno, Kotaro; et al. (June 2008). "ASTE CO(3-2) Observations of the Southern Barred Spiral Galaxy NGC 986: a Large Gaseous Bar Filled with a Dense Molecular Medium". Publications of the Astronomical Society of Japan. 60 (3): 457–464. arXiv:0805.1491. Bibcode:2008PASJ...60..457K. doi:10.1093/pasj/60.3.457.
^ Hameed, Salman; Young, Lisa M. (June 2003). "The Role of Interactions in the Evolution of Highly Star-forming Early-Type (Sa-Sab) Spiral Galaxies". The Astronomical Journal. 125 (6): 3005–3024. Bibcode:2003AJ....125.3005H. doi:10.1086/375325. S2CID 122421859.
^ O'Meara, Stephen James (2013). Deep-Sky Companions: Southern Gems. Cambridge University Press. p. 44. ISBN 9781139851541.
Transient Name Server entry for SN 2018lei. Retrieved 24 March 2023.

External links

Media related to NGC 986 at Wikimedia Commons

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Astronomical catalog List of NGC objects 1–1000

New General Catalogue 500 to 999

Constellation of Fornax

Stars

Bayer	α (Dalim) β γ γ δ ε ζ η η η ι ι κ λ λ μ ν π ρ σ τ υ φ χ χ χ ψ ω
Variable	R TZ UZ
HR	683 858
HD	15337 20781 20782 20868 (Intan)
Other	2MASS J02431371−2453298 HIP 13044 LP 944-20 UDF 2457 WASP-72 (Diya)

Exoplanets	HD 16417 b HD 20781 b c d e HD 20782 b HD 20868 b (Baiduri) TOI-849 b

Star clusters	NGC 1049

Nebulae	NGC 1360

Galaxies

NGC	823 824 922 986 1097 1210 1255 1288 1310 1316 1317 1318 1326 1350 1365 1374 1375 1379 1380 1381 1387 1398 1399 1406 1425 1427
Other	Fornax Dwarf HUDF-JD2 GS-NDG-9422 IC 335 IC 1993 JADES-GS-z14-0 JADES-GS-z7-01-QU MRC 0316-257 PGC 13809 UDF 423 UDFj-39546284 UDFy-38135539

Galaxy clusters	Fornax Cluster

Astronomical events	SN 1992bd SN 1999eu SN 2003B