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The Growth of Massive Galaxies Since z=2
Pieter G. van Dokkum, Katherine E. Whitaker, Gabriel Brammer +11
We study the growth of massive galaxies from z=2 to the present using data from the NEWFIRM Medium Band Survey. The sample is selected at a constant number density of n=2x10^-4 Mpc…
Star formation rates and stellar masses of z=7-8 galaxies from IRAC observations of the WFC3/IR ERS and the HUDF field
I. Labbe, V. Gonzalez, R. J. Bouwens +9
We investigate the Spitzer/IRAC properties of 36 z~7 z-dropout galaxies and 3 z~8 Y-dropout galaxies derived from deep/wide-area WFC3/IR data of the Early Release Science, the ultr…
The Dead Sequence: A Clear Bimodality in Galaxy Colors from z=0 to z=2.5
G. B. Brammer, K. E. Whitaker, P. G. van Dokkum +9
We select 25,000 galaxies from the NEWFIRM Medium Band Survey (NMBS) to study the rest-frame U-V color distribution of galaxies at 0 < z < 2.5. The five unique NIR filters of the N…
Ultradeep Infrared Array Camera Observations of sub-L* z~7 and z~8 Galaxies in the Hubble Ultra Deep Field: the Contribution of Low-Luminosity Galaxies to the Stellar Mass Density and Reionization
I. Labbe, V. Gonzalez, R. J. Bouwens +9
We study the Spitzer Infrared Array Camera (IRAC) mid-infrared (rest-frame optical) fluxes of 14 newly WFC3/IR-detected z=7 z_{850}-dropout galaxies and 5 z=8 Y_{105}-dropout galax…
How Massive are Massive Compact Galaxies?
Adam Muzzin, Pieter van Dokkum, Marijn Franx +3
Using a sample of nine massive compact galaxies at z ~ 2.3 with rest-frame optical spectroscopy and comprehensive U through 8um photometry we investigate how assumptions in SED mod…
The Stellar Mass Density and Specific Star Formation Rate of the Universe at z~7
Valentino Gonzalez, Ivo Labbe, Rychard J. Bouwens +4
We use a robust sample of 11 z~7 galaxies (z-dropouts) to estimate the stellar mass density of the universe when it was only ~750 Myr old. We combine the very deep optical to near-…