Astronomy Picture of the Day
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November 15, 1995
A Quintet of Galaxies
(University of Alabama)
and R.E. White, III
Five closely grouped galaxies are visible in this image
made using the
Kitt Peak National Observatory 2.1 metre telescope.
The grouping is commonly known as
Four of the galaxies show essentially the same
that they are at the same distance from us.
The large bluish spiral below and left of centre actually has
a smaller redshift than the others, indicating it is much closer.
It is probably a foreground object which happens to lie
along the line of sight to the more
Of the four distant galaxies, three seem to be colliding, showing serious
distortions due to gravitational tidal forces.
The fourth is a normal appearing elliptical galaxy (at the lower
right edge of the field).
Recent results suggest that collisions play an important
role in the life cycles of galaxies.
Tomorrow's picture: Repairing Hubble
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