9 papers
A Matched Catalogue i-dropout galaxies at z~6 in the Hubble Ultra Deep Field
Andrew J Bunker, Elizabeth R. Stanway
A recent preprint by Yan & Windhorst (astro-ph/0407493) independently repeats our selection of candidate z~6 galaxies in the Hubble Ultra Deep Field (astro-ph/0403223). The agreeme…
Star Formation at Redshift One: Preliminary results from an H-alpha Survey
M. Doherty, A. Bunker, R. Sharp +5
We present the first successful demonstration of multi-object near-infrared spectroscopy on high redshift galaxies. Our objective is to address the true star formation history of t…
Stellar Populations and Galaxy Morphology at High Redshift
Andrew Bunker, Hyron Spinrad, Daniel Stern +4
In this article we investigate the morphology and stellar populations of high-redshift galaxies through multi-waveband HST imaging and ground-based spatially-resolved spectroscopy.…
The Deepest Spectrum of the Universe? Constraints on the Lyman Continuum Background at High Redshift
Andrew J. Bunker, Francine R. Marleau, James R. Graham
We describe an ongoing experiment to search for the meta-galactic Lyman-continuum background at z~2-3. We are obtaining one of the deepest optical spectra ever, using LRIS/Keck-II…
A Serendipitous Search for Hy-Redshift Ly Emission: A Case Study of Two Sources at
Curtis Manning, Daniel Stern, Hyron Spinrad +1
In the course of our on-going search for serendipitous high-redshift LyA emission in deep archival Keck spectra, we discovered two LyA emission line candidates in a moderate disper…
Limits on the star formation rates of z>2 damped Ly-alpha systems from H-alpha spectroscopy
Andrew J. Bunker, Stephen J. Warren, D. L. Clements +2
We present the results of a long-slit K-band spectroscopic search with CGS4 on UKIRT for H-alpha emission from the objects responsible for high-redshift (z > 2) damped Ly-alpha abs…