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Astronomy Picture of the Day
Merope's Reflection Nebula
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#113562
by
[z]Barbara Harris
@
16.02.2012 00:00
- nach oben -
Merope's Reflection Nebula
Explanation:
Reflection nebulas
reflect light from a nearby star. Many small
carbon
grains in the nebula reflect the light. The blue color typical of
reflection nebula
is caused by blue light being
more efficiently scattered
by the carbon
dust
than red light. The brightness of
the nebula
is determined by the size and density of the reflecting grains, and by the color and brightness of the neighboring star(s).
NGC 1435
,
pictured above
, surrounds
Merope (23 Tau)
, one of the brightest stars in the
Pleiades
(M45). The
Pleiades
nebulosity is caused by a
chance encounter
between an
open cluster
of stars and a dusty
molecular cloud
.
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