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<p class="MsoNormal"><o:p> </o:p></p>
<p align="center" class="MsoNormal"><b>Old Dominion University<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><b>Department of Physics<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><b><o:p> </o:p></b></p>
<p align="center" class="MsoNormal"><b>Spring Colloquium Series<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><o:p> </o:p></p>
<p align="center" class="MsoNormal"><b>Tuesday March 30, 2010<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><o:p> </o:p></p>
<p align="center" class="MsoNormal"><b>"Solar Neutrinos and Planetary
Formation"<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><br>
<b>Dr. Wick Haxton<o:p></o:p></b></p>
<p align="center" class="MsoNormal"><b>Berkeley</b><b><o:p></o:p></b></p>
<p align="center" class="MsoNormal"><b><o:p> </o:p></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoPlainText">I will review what we have
learned from solar neutrinos the past decade or so, then discuss an anomaly
that has arisen in the standard solar model more recently --a disagreement
between a tests of surface metalicity (photospheric absorption lines)and
interior metalicity (helioseismology). I will explain how future solar neutrino
experiments might check this discrepancy, and why it could be important to do
so. A speculative possibility is that the discrepancy is real, and connected
with a very interesting stage of solar system formation -- the last million
years of the nebular disk, when planets are thought to have formed. I will
describe what planetary probes have taught us about the planets as metal
reservoirs, and discuss the dynamics of the nebular gas that the planets must
have "scrubbed" to segregate that much metal. This leads to a
speculative possibility, that a signature of planetary formation might be
encoded in solar composition.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p align="center" class="MsoNormal">Presentation: Physical
Sciences Building II 1100 @ 3:00 pm<o:p></o:p></p>
<p align="center" class="MsoNormal">Refreshments: 1st Floor Atrium @ 2:30 pm<o:p></o:p></p>
<p align="center" class="MsoNormal"><o:p> </o:p></p>
<p align="center" class="MsoNormal">More details at http://www.physics.odu.edu<o:p></o:p></p>
<p align="center" class="MsoNormal">All are Welcome!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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