NGC 4013
Galaxy in the constellation Ursa Major
From Wikipedia, the free encyclopedia
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) | |
| 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] |
| Apparent magnitude (V) | 12.1B[1] |
| Characteristics | |
| Type | SBa[1] |
| Size | 30.33 kpc (98,900 ly) (diameter; 25.0 mag/arcsec2 B-band isophote)[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] | |
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] It is a member of the NGC 4111 Group,[8] which is part of the Ursa Major Cloud and is the second largest group in the cloud after the NGC 3992 Group.[9][10][11]
