NGC 4013

NGC 4013

NGC 4013
HST closeup view of NGC 4013
Observation data (J2000 epoch)
Constellation Ursa Major
Right ascension 11h 58m 31.13s[1]
Declination +43° 56′ 50.1″[1]
Redshift 831 ± 1 km/s[1]
Distance 60.6 ± 8.1 Mly
(18.6 ± 2.5 Mpc)[2]
Type SBa[1]
Apparent dimensions (V) 5.2' x 1.0'[1]
Apparent magnitude (V) 12.1B[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]

Ring of New Stars in NGC 4013.

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]

See also


  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". Astronomical Journal 692 (2): 955–963.  
  6. ^ "List of Supernovae". Harvard-Smithsonian Center for Astrophysics (IAU). Retrieved 2010-07-14. 

External links

  • The Discovery of a Giant Stellar Tidal Stream Around NGC4013
  • : A Galaxy on the EdgeHubbleSite NewsCenter
  • : NGC 4013 and the Tidal StreamAstronomy Picture of the Day