77 citations · 146 across the 5 of their papers we have counts for
8 papers · 1 filter
Is the Optically Unidentified Radio Source, FIRST J121839.7+295325, a Dark Lens?
R. E. Ryan, S. H. Cohen, R. A. Windhorst +2
We present evidence that the optically unidentified radio source, FIRST J121839.7+295325, may be strongly lensing a background galaxy. We estimate the redshift of the assumed gravi…
"GiGa": the Billion Galaxy HI Survey -- Tracing Galaxy Assembly from Reionization to the Present
R. A. Windhorst, S. H. Cohen, N. P. Hathi +2
In this paper, we review the Billion Galaxy Survey that will be carried out at radio--optical wavelengths to micro--nanoJansky levels with the telescopes of the next decades. These…
Emission-Line Galaxies from the PEARS Hubble Ultra Deep Field: A 2-D Detection Method and First Results
Amber N. Straughn, Gerhardt R. Meurer, Norbert Pirzkal +11
The Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) grism PEARS (Probing Evolution And Reionization Spectroscopically) survey provides a large dataset of low-resolut…
Galaxy Mergers at z>1 in the HUDF: Evidence for a Peak in the Major Merger Rate of Massive Galaxies
R. E. Ryan, S. H. Cohen, R. A. Windhorst +1
We present a measurement of the galaxy merger fraction and number density from observations in the Hubble Ultra Deep Field for 0.5<z<2.5. We fit the combination of broadband data a…
Constraining the Distribution of L- & T-Dwarfs in the Galaxy
Russell E. Ryan, Nimish P. Hathi, Seth H. Cohen +1
We estimate the thin disk scale height of the Galactic population of L- & T-dwarfs based on star counts from 15 deep parallel fields from the Hubble Space Telescope. From these obs…
Searching for z ~ 6 Objects with the HST Advanced Camera for Surveys: Preliminary Analysis of a Deep Parallel Field
Haojing Yan, Rogier A. Windhorst, Seth H. Cohen
Recent results suggest that z ~ 6 marks the end of the reionization era. A large sample of objects at z ~ 6, therefore, will be of enormous importance, as it will enable us to obse…