lurk in clouds of glowing gas in
NGC 6188, about 4,000 light-years away.
The emission nebula is found near the edge of a
large molecular cloud unseen at visible wavelengths, in the southern
stars of the embedded Ara
were formed in that region only a few million years ago,
sculpting the dark shapes and
powering the nebular glow with
stellar winds and intense ultraviolet radiation.
formation itself was likely triggered by
winds and supernova explosions, from previous generations of massive
stars, that swept up and compressed the molecular gas.
Joining NGC 6188 on this cosmic canvas
is rare emission nebula NGC 6164,
also created by one of the region's massive O-type stars.
Similar in appearance to many
planetary nebulae, NGC 6164's striking,
symmetric gaseous shroud and faint halo surround
its bright central star near the bottom edge.
wide field of view
spans over 3 degrees (six full Moons), corresponding to
over 200 light years at the estimated distance
of NGC 6188.
Narrowband image data has been included in
looking color composite, adding to deep
red emission from hydrogen and sulfur atoms and the blue-green light
of oxygen atoms.
and Tal Faibish