Image of Alice in Wonderland at the Mad Hatter's tea party You are cordially invited to afternoon tea and biscuits wine and chocolate

Astronomy Tea Talks at Caltech

Mondays, Hameetman auditorium (Cahill)
Tea:  4.00pm
Talk: 4.15pm

Organized by:

2009 - 2010 season:
8 March 2010 Jay Anderson (STScI)

'Proper Motions at the Center of Omega Cen: Evidence for an IMBH?'

Omega Cen is the first of the traditional globular
clusters to be found to have a spread in its abundances.
I will briefly review what we know about Omega Cen's
multiple populations, and will show other clusters that
show evidence of multiplicity. Since Omega Cen is more
like a dwarf galaxy than the other globulars, it makes sense
that if any globulars house intermediate-mass black holes,
Omega Cen certainly should. Some recent observations
have shown evidence that it may in fact house a very
massive one. We will examine proper motions from HST
images taken at the cluster center to see if they can tell
us anything about a massive central object.

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Last modified on 20th Jul 2011 by Dominik A. Riechers.  

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