|NGC 4145 is around 44 million light years away and is part of
the Ursa Major cluster of galaxies. This cluster contains many
bright spirals for which NGC 4145 is a member. However this galaxy
is considered relatively "anemic" due to the fact that unlike most
spiral galaxies it does not have alot of star formation taking place.
While the spiral arms of this galaxy are punctuated by some activity,
the rest of the galaxy is quite quiet. Indeed astronomers suggest that
a galaxy like this will soon (in galactic terms) lose the impetus to
form stars and settle down to become a lenticular galaxy. Interestingly
this galaxy is interacting with another (NGC 4151). This may help maintain
the star formation in NGC 4145. In fact close inspection of the nucleus
of NGC 4145 seems to indicate that the tug of NGC 4151 has displaced
it from its position in the center of NGC 4145.
|L R G B color production was used to create this image.||
Minimum credit line: Adam Block/NOAO/AURA/NSF
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