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Cosmic Chronometers: Constraining the Equation of State of Dark Energy. II. A Spectroscopic Catalog of Red Galaxies in Galaxy Clusters
Daniel Stern, Raul Jimenez, Licia Verde +2
We present a spectroscopic catalog of (mostly) red galaxies in 24 galaxy clusters in the redshift range 0.17 < z < 0.92 obtained with the LRIS instrument on the Keck I telescope. H…
Cosmic Chronometers: Constraining the Equation of State of Dark Energy. I: H(z) Measurements
Daniel Stern, Raul Jimenez, Licia Verde +2
We present new determinations of the cosmic expansion history from red-envelope galaxies. We have obtained for this purpose high-quality spectra with the Keck-LRIS spectrograph of…
The Spitzer Deep, Wide-Field Survey
M. L. N. Ashby, D. Stern, M. Brodwin +30
The Spitzer Deep, Wide-Field Survey (SDWFS) is a four-epoch infrared survey of ten square degrees in the Bootes field of the NOAO Deep Wide-Field Survey using the IRAC instrument o…
Early assembly of the most massive galaxies
Chris A. Collins, John P. Stott, Matt Hilton +15
The current consensus is that galaxies begin as small density fluctuations in the early Universe and grow by in situ star formation and hierarchical merging. Stars begin to form re…