NGC 4013

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NGC 4013
NGC 4013HSTPart.jpg
HST closeup view of NGC 4013
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension11h 58m 31.13s[1]
Declination+43° 56′ 50.1″[1]
Redshift831 ± 1 km/s[1]
Distance60.6 ± 8.1 Mly
(18.6 ± 2.5 Mpc)[2]
Apparent magnitude (V)12.1B[1]
Apparent size (V)5.2' x 1.0'[1]
Other designations
UGC 6963,[1] PGC 37691[1] LEDA 37691[3] 2MFGC 9412[3]

IRAS 11559+4413[3] 2MASX J11583141+4356492[3]

MCG+07-25-009[3] UZC J115831.5+435651[3]

NGC 4013 is an edge-on barred spiral galaxy about 55 million light-years away in the constellation Ursa Major. The disk of NGC 4013 shows a distinct "peanut"-shaped bulge in long exposure photographs that N-body computer simulations suggest is consistent with a stellar bar seen perpendicular to the line of sight.[4]

Infrared image of the galaxy showing a ring of heavy star formation

A recent deep color image of NGC 4013 revealed a looping tidal stream of stars extending over 80 thousand light-years from the Galactic Center. This structure is thought to be the remnants of a smaller galaxy that was torn apart by tidal forces as it collided with NGC 4013.[5]

Supernova SN 1989Z was discovered on December 30, 1989 at apparent magnitude 12.[6]

NGC 4013 is a member of the Ursa Major Cluster.[7]

See also[edit]


  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 4013. Retrieved 2006-11-25.
  2. ^ "Distance Results for NGC 4013". NASA/IPAC Extragalactic Database. Retrieved 2010-06-13.
  3. ^ a b c d e f "SIMBAD". Results for NGC 4013. Retrieved 2009-12-25.
  4. ^ Combes, F. and Sanders, R.H., "Formation and properties of persisting stellar bars", Astronomy and Astrophysics, vol. 96, no. 1-2, Mar. 1981, p. 164-173.
  5. ^ D. Martínez-Delgado (IAC); M. Pohlen (Cardiff); R. Jay GaBany (Blackbird Obs); S. Majewski (Univ Virginia); et al. (2009). "Discovery of a Giant Stellar Tidal Stream Around the Disk Galaxy NGC 4013". Astrophysical Journal. 692 (2): 955–963. arXiv:0801.4657. Bibcode:2009ApJ...692..955M. doi:10.1088/0004-637X/692/2/955. S2CID 14957582.
  6. ^ "List of Supernovae". Harvard-Smithsonian Center for Astrophysics (IAU). Retrieved 2010-07-14.
  7. ^ Rueff, Katherine M.; Howk, J. Christopher; Pitterle, Marissa; Hirschauer, Alec S.; Fox, Andrew J.; Savage, Blair D. (2013-01-31). "The Relationship Between the Dense Neutral and Diffuse Ionized Gas in the Thick Disks of Two Edge-On Spiral Galaxies". The Astronomical Journal. 145 (3): 62. arXiv:1301.0325. Bibcode:2013AJ....145...62R. doi:10.1088/0004-6256/145/3/62. ISSN 0004-6256. S2CID 119277886.

External links[edit]