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Астронет: Астрономическая картинка дня NGC 2359: Шлем Тора http://www.variable-stars.ru/db/msg/1458204/eng |
Credit & Copyright: Ignacio
Diaz Bobillo
Explanation:
NGC 2359 is a helmet-shaped cosmic cloud with
wing-like appendages popularly called Thor's Helmet.
Heroically sized even for a
Norse god,
Thor's Helmet is about 30 light-years across.
In fact, the helmet is more like
an interstellar bubble, blown as a fast
wind from the bright, massive star near the bubble's center inflates
a region within the surrounding molecular cloud.
Known as a
Wolf-Rayet star, the central star is an
extremely hot giant thought to be in a brief,
pre-supernova stage of evolution.
NGC 2359
is located about
15,000 light-years away in the constellation
Canis
Major.
The remarkably detailed image
is a mixed cocktail of data from broadband and narrowband filters
that captures natural looking stars and the glow of
the nebula's
filamentary structures.
It highlights a blue-green color from strong emission
due to oxygen
atoms in the glowing gas.
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official: Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.