Credit & Copyright: NASA,
JPL-Caltech,
L. Rebull
(SSC, Caltech);
Optical Rollover:
DSS, D. De Martin
Explanation:
The North America Nebula can do what most North Americans cannot -- form stars.
Precisely where in
the nebula these stars are forming has been mostly obscured by some of the nebula's
thick dust that is opaque to visible light.
However, a
view
of the
North America Nebula
in infrared light by the orbiting
Spitzer Space Telescope has
peered through much
of the dust and uncovered thousands of newly formed stars.
Rolling your cursor over the
above
scientifically-colored infrared image will bring up a
corresponding optical image of the same region for
comparison.
The
infrared image neatly
captures young stars in many stages of formation, from being imbedded in dense
knots of gas and dust, to being surrounded by
disks and emitted
jets, to being
clear of their birth cocoons.
The North America Nebula
(NGC 7000)
spans about 50
light years and lies about 1,500 light years away toward the
constellation of the Swan
(Cygnus).
Still, of all the stars known in the North America Nebula, which massive stars emit
the energetic light that gives the ionized
red glow is still
debated.
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Публикации с ключевыми словами:
North America Nebula - infrared - Spitzer space telescope - инфракрасное излучение
Публикации со словами: North America Nebula - infrared - Spitzer space telescope - инфракрасное излучение | |
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