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Astronomy Picture of the Day
Small Galaxy NGC 4449
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#100168
by
[z]Barbara Harris
@
04.05.2007 00:00
- nach oben -
Small Galaxy NGC 4449
Explanation:
Grand spiral galaxies
often seem to get all the glory.
Their newly formed, bright, blue
star clusters along beautiful, symmetric spiral arms
are guaranteed to attract
attention
.
But small irregular galaxies form stars too, like
NGC 4449,
located
about 12 million light-years away.
The
well-studied
galaxy is similar in size, and often compared to our
Milky Way's satellite galaxy, the
Large Magellanic Cloud
(LMC).
This
lovely
color image
shows NGC 4449's general bar shape,
also characteristic of the LMC, with
scattered young blue star clusters.
Near the bottom is the pinkish glow of
atomic hydrogen gas, the
telltale
tracer of massive star forming regions.
NGC 4449 is a member of a
group
of galaxies
found in the constellation Canes Venatici.
In fact, interactions with nearby
galaxies
are thought to have influenced star formation in NGC 4449.
Credit & Copyright