Analyzing Surface Brightness profiles
The whole day I analyzed surface brightness profiles of the IGL. Different centers (since the IGL is not like a galaxy where a center is more or less clear), different parameters, but in all the cases residuals where too large, an obvious thing since the isophotes are clearly not elliptical and the overall shape of the IGL is very irregular. I just wanted to be 100% sure I couldn't take any physical information on that. Trying to adjust the profiles gives totally unphysical parameters.Talk at ESO by Amina Helmi about Cosmology with our own Galaxy. How streams can constrain dark matter halo shapes, formation of the galaxy and so on. Interesting things, even though different tests point toward opposite results like oblate and prolate DM halos.
posted by Cris Da Rocha @ 6:50 PM
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