Beyond the stellar-halo mass relation: links between the dark matter halo and galaxy size and the total globular cluster population.

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• Mike Hudson (Waterloo)
• Friday 09 June 2017, 11:30-12:30
• Kavli LMR, IoA.

If you have a question about this talk, please contact Martin Haehnelt.

I will discuss recent results that allow us to measure dark matter halo masses for stacked samples via weak gravitational lensing. The non-linear stellar-to-halo mass relation is now well understood empirically, although the physical mechanisms behind it are still uncertain. I will review the most recent results from our CFHT LenS survey. However there remains considerable scatter in this relation which must be linked to other parameters of the galaxy. I will discuss new unpublished results on the dependence of halo mass on galaxy size at fixed stellar mass.

The second part of the talk will discuss the surprising link between the mass in globular clusters and the mass of the dark matter halo, as well as a new correlations between the size of the GC system and halo mass.

If time permits, as a bonus topic I will discuss our weak lensing map of dark matter filaments between Luminous Red Galaxies.

This talk is part of the Galaxies Discussion Group series.

This talk is included in these lists:

• Cambridge Astronomy Talks
• Combined External Astrophysics Talks DAMTP
• Cosmology, Astrophysics and General Relativity
• Galaxies Discussion Group
• Institute of Astronomy Talk Lists
• Kavli Institute for Cosmology Talk Lists
• Kavli LMR, IoA

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