
Trent Dupuy
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Detecting
Extrasolar Planets With Pan-STARRS Astronomers
have finally been able to test their ideas about
how planets form now that 200 extrasolar planets
have been discovered using the radial velocity
technique. The Pan-STARRS-1 telescope being built
by the IfA will be used
to search for planets around the smallest and coolest
stars in the Galaxy: red dwarfs. Our ideas about
planet formation around these low-mass stars
is completely untested, and different
models
make very different predictions about the types
of planets that should
be found around red dwarfs.
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Steven A. Rodney |
The Supernova
Mystery: Measuring the Universe with Enigmatic
Explosions
Supernovae - violent explosions
in which some stars end their lives - are among
the most spectacular events in the Universe. By
observing supernovae, astronomers have measured
the cosmic expansion and have found that it is
speeding up! This unexpected result is driving
much of modern cosmology, but the basic tool -
the supernova itself - is still shrouded in mystery.
What do these stars look like before they explode?
What causes the explosion? The answers may help
to define the future of observational cosmology.
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Mark Willman |
A New Method
for Dating Asteroids
Understanding our solar system's origin requires
accurately dating asteroids and comets (the oldest/least
altered material in our solar system). The dynamical
dating method tracks the spreading of asteroid families
over time. A new method of dating asteroids uses
their colors. There is evidence that the stony asteroids
slowly become redder due to solar wind, a sort of
sunburn. Mark Willman, under the direction of Robert
Jedicke, is taking
spectra of the youngest known asteroid family to
determine their color. So far, these asteroids are
bluer than expected. |
Trent Dupuy, a
third-year PhD student, is originally from Shreveport,
Louisiana. During the summer of 2003, Trent made
his first visit to Hawaii as one of the IfA's
REU (Research Experience for Undergraduates) students.
He spent the summer working with Bo Reipurth. Trent
received his BS in Physics and Astronomy from the
University of Texas at Austin in May 2004. He returned
to Hawaii that fall as a graduate student and, having
recently passed his qualifying exams, he will
be working on a thesis with Michael Liu.
Steven
Rodney,
in his fourth year at the IfA,
is working on a PhD thesis on type
Ia supernova progenitors with John Tonry. Steve is
from Cleveland, Ohio, and received his BS in Physics
and Astronomy from Cleveland's Case Western Reserve
University, where he minored in Japanese. In 2003,
he received a Graduate Research Fellowship from the
National Science Foundation to support his first three
years of research and study at the IfA. He is now supported
by a grant for Hubble Space Telescope archival research
from NASA's Space Telescope Science Institute.
Mark Willman is
a fifth-year nontraditional grad who spent two decades
in Hilo as an orchid grower. The discovery of extrasolar
planets in the late 1990s fired his imagination and
prompted a return to the academy. He says, "This
is not the most efficient way to get an education,
but the pleasure of doing science has justified the
switch. We live in an extraordinary time for astronomy,
when CCDs, large mirrors, and powerful computers
are producing a flood of data and insights."
Map to
Institute for Astronomy, 2680 Woodlawn Drive, Manoa
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