[Baps] 2 talks this week: Aharonson on Mon, Wilner on Thu

[Sarah Stewart-Mukhopadhyay]

Harvard EPS Colloquium

Distribution, Exchange, and Topographic Control of Subsurface Ice on Mars
Oded Aharonson
Caltech

Monday, May 1
4pm Haller Hall

http://www.eps.harvard.edu/seminars/epscolloque.php

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CfA Colloquium

Protoplanetary Disks: Analogs of the Early Solar  System
Dr. David Wilner
CfA

Thursday, May 4
4 pm Phillips  Auditorium.

Abstract: The nearly circular, coplanar orbits of the  planets in our
Solar System have led astronomers for centuries to consider an  origin
within a rotating disk. Advances in observational resolution and 
sensitivity, especially at millimeter wavelengths, now provide direct
evidence  for disks of gas and dust surrounding nearby
pre-main-sequence stars, many of  which have physical properties
appropriate to the formation of Solar Systems  like our own. I will
review briefly how we know what we know about these  "protoplanetary"
disks, and I will discuss how new observations are starting to 
capture key aspects of the planet formation process, including (1)
dust  evolution towards "pebbles," and (2) inner disk holes opened by
disk-protoplanet  interactions.

http://www.cfa.harvard.edu/colloquia/latest.html