1. mgwalker@umich.edu dSph Masses Matthew Walker – IoA, Cambridge with Mario Mateo - U. Michigan Edward Olszewski - U. Arizona Jorge Peñarrubia - IoA Wyn Evans - IoA Gerry Gilmore - IoA --Stay tuned for Joe Wolf’s talk too-- Extreme Star Formation in Dwarf Galaxies Ann Arbor, 28 July, 2009

2. mgwalker@umich.edu Velocity Dispersion Profiles Walker etal (arXiv:0906.0341)

3. mgwalker@umich.edu Kinematics with the Jeans Equation 1) Jeans Eq. (spherical) 3) Adopt Hernquist Halo Model --> NFW Cusp --> Core Free Parameters V_max, r_scale, alpha, gamma, beta=constant 2) Solution in terms of observables

4. mgwalker@umich.edu Fornax: Vmax = 20 +/- 4 km/s arXiv:0906.0341

5. mgwalker@umich.edu M(rhalf) for 8 “classical” dSphs arXiv:0906.0341 Robust to large ranges for r0, alpha, gamma, beta

6. mgwalker@umich.edu Simple Mass Estimator Jeans Eq. Isotropy, flat vdisp profile -->

7. mgwalker@umich.edu Simple Mass Estimator

8. mgwalker@umich.edu Simple Mass Estimator c.f. Strigari et al. 2008

9. mgwalker@umich.edu Data for 28 Satellites arXiv:0906.0341

10. mgwalker@umich.edu A Universal Mass Profile? arXiv:0906.0341

11. mgwalker@umich.edu Velocity Dispersion vs. Size arXiv:0906.0341

12. mgwalker@umich.edu Universal Mass Profile? arXiv:0906.0341

13. mgwalker@umich.edu Scatter wrt Universal Profile and M 300 arXiv:0906.0341

14. mgwalker@umich.edu