Effects in the solar system
Depletion of the outer asteroid belt due to inward migration of Jupiter.
Outward migration of Saturn, Uranus, and Neptune; capture of Pluto into
Jupiter mass planets at ap=0.05 AU; larger masses correlate
with larger ap and ep.
There will be a correlation between metallicity and short period Jupiters:
High metallicity gas will produce a more massive planetesimal disk, making
migration to small a more likely.
The migration will alter metallicity in the surface layers of the star
by dropping rocks onto it.
The stars harboring extra solar planets are now known to have accreted
roughly 5 Earth masses of iron
The migration will produce interstellar comets/planetesimals.
The migration may produce Oort clouds.
There will be a correlation between infrared excesses (``Vega-like disks'')
and short period planets. The outer parts (>10's of AU) of the massive
planetesimal disk will produce and maintain large amounts of dust over
the lifetime of the system.
The observational situation will change radically in the next decade.
Radial velocity techniques will improve. For example, new searches are
underway at the Keck telescope, and in the southern hemisphere. This will
increase the number of stars being observed by a factor of about three,
which will in turn increase the number of known extra solar planets by
a similar factor.
Space based networks of large telescopes are being planned. This will allow
astrometric detection of planets around nearby stars see
this web site.
NASA has already budgeted nearly $1,000,000,000 to build the NGST (next
generation space telescope) and SIM (space interferometry mission)!
to the list of lectures.
to Geology 130 Home page.