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69 papers · 1 filter
Biases and Uncertainties in Physical Parameter Estimates of Lyman Break Galaxies from Broad-band Photometry
Seong-Kook Lee, Rafal Idzi, Henry C. Ferguson +3
We investigate the biases and uncertainties in estimates of physical parameters of high-redshift Lyman break galaxies (LBGs), such as stellar mass, mean stellar population age, and…
Daylight operation of a free space, entanglement-based quantum key distribution system
Matthew P. Peloso, Ilja Gerhardt, Caleb Ho +2
Many quantum key distribution (QKD) implementations using a free space transmission path are restricted to operation at night time in order to distinguish the signal photons used f…
A cool starspot or a second transiting planet in the TrES-1 system?
M. Rabus, R. Alonso, J. A. Belmonte +6
We investigate the origin of a flux increase found during a transit of TrES-1, observed with the HST. This feature in the HST light curve cannot be attributed to noise and is suppo…
AzTEC Millimetre Survey of the COSMOS Field - II. Source Count Overdensity and Correlations with Large-Scale Structure
J. E. Austermann, I. Aretxaga, D. H. Hughes +9
We report an over-density of bright sub-millimetre galaxies (SMGs) in the 0.15 sq. deg. AzTEC/COSMOS survey and a spatial correlation between the SMGs and the optical-IR galaxy den…
A Map of the Integrated Sachs-Wolfe Signal from Luminous Red Galaxies
Benjamin R. Granett, Mark C. Neyrinck, István Szapudi
We construct a map of the time derivative of the gravitational potential traced by SDSS Luminous Red Galaxies. The potential decays on large scales due to cosmic acceleration, leav…
Spectroscopy of High-Redshift Supernovae from the ESSENCE Project: The First Four Years
R. J. Foley, T. Matheson, S. Blondin +23
We present the results of spectroscopic observations from the ESSENCE high-redshift supernova (SN) survey during its first four years of operation. This sample includes spectra of…