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Астронет: Астрономическая картинка дня Тюльпан и Лебедь X-1 http://variable-stars.ru/db/msg/1375967/eng |
Credit & Copyright: Ivan Eder
Explanation:
Framing a bright emission region,
this
telescopic view
looks out along the plane of our Milky Way Galaxy toward the
nebula rich constellation
Cygnus
the Swan.
Popularly called the Tulip Nebula, the reddish glowing cloud of
interstellar gas and dust is also found in the
1959 catalog
by astronomer Stewart Sharpless
as
Sh2-101.
About 8,000 light-years distant and 70 light-years across
the complex and beautiful nebula blossoms at the center of this
composite image.
Ultraviolet radiation from young energetic stars
at the edge of the Cygnus
OB3 association, including
O star HDE 227018,
ionizes the atoms
and powers the emission from the Tulip Nebula.
HDE 227018 is the bright star
near the center of the nebula.
Also framed in the field of view is microquasar
Cygnus X-1, one
of the strongest X-ray sources in planet Earth's sky.
Driven by powerful jets from a black hole accretion disk,
its fainter visible curved shock front lies
above and right, just
beyond the cosmic Tulip's petals
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.