One of these has an overlay of detailed information on
ionising stars.
Not exact matches
During their lives, massive
stars produce copious amounts of
ionising radiation and kinetic energy through strong stellar winds.
The idea that massive
stars will have a considerable effect on their surroundings is not new: such
stars are known to blast out vast quantities of powerful,
ionising radiation — emission with enough energy to strip atoms of their orbiting electrons.
H II regions like RCW 106 are clouds of hydrogen gas that are being
ionised by the intense starlight of scorching - hot, young
stars, causing them to glow and display weird and wonderful shapes.
They picked up the gas by its microwave emissions — suspecting that radiation from massive
stars nearby had
ionised the gas.
When this light encounters hydrogen atoms still lingering in the stellar nursery that produced the
stars, the atoms become
ionised.
This only ended when ultraviolet light from the first
stars and giant black holes had once again
ionised the fog of neutral atoms filling the universe.
The surrounding cloud of
ionised gas is producing more microwaves than clouds around other
star clusters in our galaxy.
The region of sky pictured is listed in the Sharpless catalogue of H II regions: interstellar clouds of
ionised gas, rife with
star formation.
Observations released in 2003 from NASA's Wilkinson Microwave Anisotropy Probe (WMAP) suggested that the first
stars started
ionising gas after only 200 million years.
Astronomers thought that
ionised gas created by the first generation of
stars might be mimicking the imprint of inflation by scattering the microwaves on their way to us from distant parts of the universe.
The contrasting faint reddish clouds that seem to weave between the
stars are composed of
ionised hydrogen gas.
The energetic radiation from these new
stars strips electrons from the atoms within the surrounding hydrogen gas,
ionising it and producing a characteristic red glow.
The distinctive blueish colour of this rather mysterious object is again created by radiation from the hot
star — this time by
ionising oxygen instead of hydrogen.
Radiation from hot young
stars could account for
ionised oxygen in the cloud, but not the
ionised neon: neon doesn't shine in the ultraviolet, as seen in the cloud, without lots of X-rays hitting it.
We know the
stars ought to be there, because these emissions come from hydrogen
ionised by
stars.
It produced the black holes we observe, as well as the
ionised gas around them and the
star formation rate in their host galaxies.
These are the glowing remains of the stellar envelope of gas ejected during the AGB phase, which is
ionised by ultraviolet radiation emitted by the central
star.
This
star - forming region of
ionised hydrogen gas is in the Large Magellanic Cloud, a small galaxy which neighbours the Milky Way.
The energy released now heats the gas till it becomes an
ionised plasma due to the high Temperature, the escape of this centraally generated energy to the suface of the «cloud», now a proto
star will eventually stop the collapse as the outer layers also heat, and the outer plasma will become opaque to the EM radiation generted at the million degree buring interface.