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

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Presentation on theme: "CDFS SA12 SA15 Morphologies & Star Formation Histories of Massive Galaxies at z > 1.3 P. McCarthy & The GDDS Team Venice 2006."— Presentation transcript:

1 CDFS SA12 SA15 Morphologies & Star Formation Histories of Massive Galaxies at z > 1.3 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 Passive Intermediate Composite Young Spectral Classes

6 Old Galaxies at 1.3 < z < 1.8 =1.3

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

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

9 Old Galaxies at 1.3 < z < 1.8 =1.3 =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 ~ 2.5 [Fe/H] > 0 E(B-V) ~ 1 ~ 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 = 1.32 Z = < R e < 1

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? IMACS on the 6.5m Baade Telescope 27 Diameter field of view Wider

19 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 Not just early formation…. Early assembly? Where are the progenitors? see talks by Eyles, Mobasher, Wiklind

22

23 Intermediate Age Populations


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