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CDFS SA12 SA15

Morphologies & Star Formation Histories of Massive Galaxies at z > 1.3. CDFS SA12 SA15. P. McCarthy & The GDDS Team. Venice 2006. Star Formation Histories. Juneau et al. The Most Massive Galaxies. ~ 25% z = 0 mass density. Glazebrook et al. Spectral Types at z > 1.3. Star Forming.

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CDFS SA12 SA15

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  1. Morphologies & Star Formation Histories of Massive Galaxies at z > 1.3 • CDFS • SA12 • SA15 P. McCarthy & The GDDS Team Venice 2006

  2. Star Formation Histories Juneau et al.

  3. The Most Massive Galaxies ~ 25% z = 0 mass density Glazebrook et al.

  4. Spectral Types at z > 1.3 Star Forming Pure Passive

  5. Color Evolution Spectral Classes Passive Intermediate Composite Young

  6. Old Galaxies at 1.3 < z < 1.8 <z>=1.3

  7. Old Galaxies at 1.3 < z < 1.8 <z>=1.3 <z>=1.8

  8. Old Galaxies at 1.3 < z < 1.8 <z>=1.3 <z>=1.8 <z>=0.3

  9. Old Galaxies at 1.3 < z < 1.8 <z>=1.3 <z>=1.8 2Gyr Pegase Model

  10. Old Galaxies at 1.3 < z < 1.8 Age Fitting of 20 individual Galaxies 1.3 < z < 2.0 <zf> ~ 2.5 [Fe/H] > 0 E(B-V) ~ 1 <zf> ~ 4 [Fe/H] = 0

  11. Star Forming Galaxies 1.3 < z < 2.0 ACS F814W

  12. Pure Passive Systems ACS F814W NICMOS F160W 75-80% Spheroids

  13. Surface Brightness Profiles Z = 1.84 0.3 < Re< 1 Z = 1.32

  14. Size Distribution Little or no evolution in the size distribution

  15. Kormendy Relation at 1.3 < z < 2 Rest Frame V-Band Kormendy Diagram

  16. Kormendy Relation at 1.3 < z < 2 Passive Evolution ~1 mag per unit redshift

  17. Kormendy Relation at 1.3 < z < 2 Passive Evolution 1 mag per unit redshift Z ~ 1 Radio Galaxies Best et al. Zirm et al.

  18. Wider or Deeper Surveys? Wider IMACS on the 6.5m Baade Telescope 27 Diameter field of view

  19. 350-500 slits per mask R ~ 1000 Nod & Shuffle sky subtraction

  20. Basics ``Up-Sizing Giant Magellan Telescope 24m Aperture 18 x 18 VMOS 7 x 7 NIRMOS

  21. Conclusions • Massive Red Galaxies to z ~ 2 show little Evolution in: • Colors and Spectral Features • Luminosities & Stellar Masses • Morphologies and Sizes • Structural Scaling Laws Where are the progenitors? Not just early formation…. Early assembly? see talks by Eyles, Mobasher, Wiklind

  22. Intermediate Age Populations

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