I missed the session on tuesday of "Short Talks: Structure of GCs and Their Dynamics",
fortunately the audio and video feed is here for posterity
Fujii, Varri and Waters present.
- Log in to post comments
More like this
In case you missed them, here are my selections from the psychology and neuroscience posts on ResearchBlogging.org for the past week:
Confronted with fake video evidence, nearly everyone confesses. In a simulated "crime," researchers were able to induce false confessions -- but fewer people were…
I didn't take the DSLR to March Meeting with me, but I did throw a point-and-shoot in my bag. A few of these are still just cell-phone snapshots, because I didn't have the bag with me all the time.
193/366: Stadium View
When I checked into the hotel, they told me I had a "stadium view" room on the…
Yes, about 200-something people will be participating in the Science Blogging Conference in the real space and real time, being physically present. But, both those who are here and those who are not should also participate online.
Here are the three main places to do so:
1. The Wiki
The main…
wherein you can learn about the "No Teleportation Theorem" and why there is no classical Scattering Theorem
or some such nonsense...
me, podcast with bonus video feed.
Argh.
one of the nice, but occasionally disturbing things about the Kavli Institute of Theoretical Physics is that they podcast…
In the discussion of these talks there were some interesting ideas from theorists about the data analysis of extragalactic globular cluster observations. Perhaps the most important point that may have been missed was that sufficiently deep HST observations of extragalactic globular clusters enable the determination of both the half-light radius and a radial profile shape of extragalactic globular clusters. With the assumption that these old clusters follow King models, this means that the data can constrain both the half-light radius and the concentration. Extensive simulations demonstrating this and delineating the signal-to-noise requirements were published by Carlson & Holtzman in 2001, among others. The significant dynamical range that allows this to be done can also be seen in the slides in the Waters talk.
Not all HST datasets meet these S/N requirements, but the very deep observations of M87 do. Thus the analysis of these data by Waters provides large number statistics to investigate questions about the correlations among globular cluster properties such as luminosity and parameters that follow from King models such as core, half-light, and tidal radii, along with other phenomena such as the presence of a bright X-ray binary. The measurements of the King model parameters have uncertainties, but the values are constrained by the data.