Cafe-Club, Shawn KNABEL (University of California-Los Angeles): “Breaking MAD: joint constraints on the mass profiles and orbital anisotropies of elliptical galaxies with spatially resolved kinematics”.

Shawn KNABEL (University of California-Los Angeles), who will talk about “Breaking MAD: joint constraints on the mass profiles and orbital anisotropies of elliptical galaxies with spatially resolved kinematics”.

You can find the schedule of upcoming café-clubs and the video of old ones at http://wiki.lam.fr/geco/CafeClub

Take care,
Carlo, Meriam, Mathilde
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ABSTRACT Shawn KNABEL)

We measure spatially-resolved kinematics and show preliminary models of the dynamics of 14 SLACS lenses. Using observations from Keck KCWI integral field spectroscopy and Jeans Anisotropic Modeling, we constrain the mass profile and anisotropy of large elliptical galaxies. The constraints from these non-time-delay lenses will also be used in the inference of cosmological parameters through time-delays of lensed quasars. Each galaxy is classified as a fast (regular) or slow (nonregular) rotator in comparison with the kinematics of nearby galaxies. These classifications, as well as interesting features like kinematically decoupled cores, trace distinct evolutionary paths (i.e. quenching vs dry mergers) and are important for properly handling the dynamical modeling. We begin to model the dynamics in spherical and axisymmetric coordinates and constrain radial profiles of orbital anisotropy, mass profiles, and dark matter content of the 14 galaxies. This work, within the broader strategy of the TDCOSMO collaboration, is able to overcome degeneracies in the orbital anisotropies and mass profiles that dominate the uncertainties on the inference of the Hubble constant through time-delays of lensed quasars.