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Астронет: Астрономическая картинка дня Пылевые волокна в NGC 1947 http://www.variable-stars.ru/db/msg/1733308/eng |
Credit & Copyright: ESA/Hubble & NASA, D. Rosario; Acknowledgment: L. Shatz
Explanation:
Found in far southern skies, deep within the boundaries of the
constellation
Dorado,
NGC 1947 is some 40 million light-years away.
In silhouette against starlight, obscuring lanes of cosmic dust
thread across the peculiar galaxy's bright central regions.
Unlike the rotation of stars, gas, and dust tracing the arms of
spiral galaxies, the motions of dust and gas don't follow the motions of stars
in NGC 1947 though.
Their more complicated
disconnected motion suggest this galaxy's
visible threads of dust and gas
may have come from a donor galaxy, accreted by NGC 1947 during
the last 3 billion years or so of the peculiar galaxy's evolution.
With spiky foreground Milky Way stars and
even more distant background galaxies scattered through the frame,
this sharp Hubble image
spans about 25,000 light-years near the center of NGC 1947.
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.