Stéphane Courteau

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Mass Modeling: Dutton etal (2005) • Ingredients: – Hα + HI rotation curves (Blais-Ouellette 2000) – R-band surface brightness profile – gas density profile – adiabatic contraction Blumenthal et al. (1986) (verified by Jesseit etal 2002; Wilson 2003; Gnedin etal 2004; Sellwood & McGaugh 2005; Kazantzidis etal 2005) – (disk thickness, oblate halos) € • Assume disk M/L and invert light profile ⇒ V disk 2 2 2 2 Vobs = Vdisk + Vgas + Vhalo rM(r) = const • Free parameters: disk M/L, halo (α, c, V 200)
Effect of Adiabatic Contraction (same disk ϒ d) Final Initial (NFW) Without adiabatic contraction, χ 2 = 1.7, v 200 = 91, c = 14.8 Dutton et al (2005)
Page 1 and 2: Nearly Normal Galaxies in a ΛCDM U
Page 3 and 4: Ascona/Terschelling Highlights •
Page 5 and 6: The outer regions of M31 Worthey, E
Page 11 and 12: NGC 4656: small bulge and prominent
Page 13 and 14: Ascona/Terschelling Highlights Disk
Page 15 and 16: Interpretations of disk truncations
Page 17 and 18: 0.15 µm 0.4-0.8 µm 1.2-2.2 µm 3.
Page 19 and 20: ΛCDM Formation Models • Failures
Page 21: ΛCDM Formation Models • predicti
Page 25 and 26: Moving Forward in Mass Modeling Req
Page 29 and 30: An argument for pure stellar disks
Page 31 and 32: Residual Correlations Courteau et a
Page 33 and 34: Comparison With Models • Simple e
Page 36 and 37: Evidence for Sub-Maximal Disks •
Page 38 and 39: SparsePak Study of Barred Galaxies
Page 40 and 41: € Scaling Relations of Galaxies
Page 42 and 43: λ = halo spin c = halo conc. m d =

Stéphane Courteau

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