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A Molecular Line Scan in the Hubble Deep Field North: Constraints on the CO Luminosity Function and the Cosmic H2 Density
F. Walter, R. Decarli, M. Sargent +19
We present direct constraints on the CO luminosity function at high redshift and the resulting cosmic evolution of the molecular gas density, (z), based on a blind mole…
Contamination of Broad-Band Photometry by Nebular Emission in High Redshift Galaxies: Investigations with Keck's MOSFIRE Near-Infrared Spectrograph
Matthew A. Schenker, Richard S. Ellis, Nick P. Konidaris +1
Earlier work has raised the potential importance of nebular emission in the derivation of the physical characteristics of high redshift Lyman break galaxies. Within certain redshif…
Deep LBT/LUCI Spectroscopy of a Lyman-alpha Emitter Candidate at z ~ 7.7
Linhua Jiang, Fuyan Bian, Xiaohui Fan +5
We present deep spectroscopic observations of a Lyman-alpha emitter (LAE) candidate at z ~ 7.7 using the infrared spectrograph LUCI on the 2 x 8.4m Large Binocular Telescope (LBT).…
Ultra-faint Ultraviolet Galaxies at z~2 Behind the Lensing Cluster Abell 1689: the Luminosity Function, Dust Extinction and Star Formation Rate Density
Anahita Alavi, Brian Siana, Johan Richard +8
We identified the z~2 Lyman break galaxies using deep HST ultraviolet (F275W/F336W) imaging of Abell 1689. Because of the imaging depth and the large magnification provided by the…
Keck Spectroscopy of Gravitationally Lensed z=4 Galaxies: Improved Constraints on the Escape Fraction of Ionizing Photons
Tucker Jones, Richard S. Ellis, Matthew A. Schenker +1
The fraction of ionizing photons that escape from young star-forming galaxies is one of the largest uncertainties in determining the role of galaxies in cosmic reionization. Yet tr…
The CASSOWARY spectroscopy survey: A new sample of gravitationally lensed galaxies in SDSS
Daniel P. Stark, Matthew Auger, Vasily Belokurov +7
Bright gravitationally lensed galaxies provide our most detailed view of galaxies at high redshift. Yet as a result of the small number of ultra-bright z~2 lensed systems with conf…