NGC 4013
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.
A recent deep color image of NGC 4013 revealed a looping tidal stream
of stars extending over 80 thousand light-years from the galactic core. 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.
Supernova
SN 1989Z was discovered on December 30, 1989 at apparent magnitude 12.
Barred spiral galaxy
A barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars. Bars are found in approximately two-thirds of all spiral galaxies...
about 55 million
1 E23 m
To help compare different orders of magnitude, this page lists distances starting at 100 Zm .Distances shorter than 100 Zm* 140 Zm — 15 million light years — Distance to Centaurus A galaxy...
light-years away in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
Ursa Major
Ursa Major
Ursa Major , also known as the Great Bear, is a constellation visible throughout the year in most of the northern hemisphere. It can best be seen in April...
. 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.
A recent deep color image of NGC 4013 revealed a looping tidal stream
Tidal stream
A tidal stream can refer to two different phenomena:*in marine science it refers to the currents associated with the tides, generally near a coastline or harbor....
of stars extending over 80 thousand light-years from the galactic core. 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.
Supernova
Supernova
A supernova is a stellar explosion that is more energetic than a nova. It is pronounced with the plural supernovae or supernovas. Supernovae are extremely luminous and cause a burst of radiation that often briefly outshines an entire galaxy, before fading from view over several weeks or months...
SN 1989Z was discovered on December 30, 1989 at apparent magnitude 12.