NGC 4013

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]

NGC 4013
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]
Characteristics
TypeSBa[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]
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

References


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