Exploring the outer Solar System: now in vivid colour - Michele Banniste...
Δημοσιεύτηκε στις 18 Μαρ 2016
The
outer reaches of our Solar System are home to hundreds of thousands of
small icy worlds. Their present orbits are a sculpted signature of the
early migrations of the giant planets, particularly Neptune. Yet the
faintness and highly eccentric orbits of most of these worlds mean only a
tiny fraction of them have yet been discovered. With the Outer Solar
System Origins Survey on CFHT, we are discovering up to five hundred new
outer Solar System objects, with exquisitely well-determined orbital
parameters. Our complementary Large Program on Gemini North is observing
the brightest of our discoveries in the optical and infrared with
unprecedented precision, providing information on the ices, silicates
and organic compounds on the surfaces of these small worlds. This
colourful map of the structure of the outer Solar System is providing
new constraints on Neptune's migration.
outer reaches of our Solar System are home to hundreds of thousands of
small icy worlds. Their present orbits are a sculpted signature of the
early migrations of the giant planets, particularly Neptune. Yet the
faintness and highly eccentric orbits of most of these worlds mean only a
tiny fraction of them have yet been discovered. With the Outer Solar
System Origins Survey on CFHT, we are discovering up to five hundred new
outer Solar System objects, with exquisitely well-determined orbital
parameters. Our complementary Large Program on Gemini North is observing
the brightest of our discoveries in the optical and infrared with
unprecedented precision, providing information on the ices, silicates
and organic compounds on the surfaces of these small worlds. This
colourful map of the structure of the outer Solar System is providing
new constraints on Neptune's migration.
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