150 citations · 770 across the 29 of their papers we have counts for
7 papers · 1 filter
Spectroscopic Confirmation of Faint Lyman Break Galaxies at Redshifts Four and Five in the Hubble Ultra Deep Field
James E. Rhoads, Sangeeta Malhotra, Norbert Pirzkal +6
We present the faintest spectroscopically confirmed sample of redshift four and five Lyman break galaxies to date. The sample is based on slitless grism spectra of the Hubble Ultra…
Redshifts of Emission Line Objects in the Hubble Ultra Deep Field
Chun Xu, Norbert Pirzkal, Sangeeta Malhotra +16
We present redshifts for 115 emission line objects in the Hubble Ultra Deep Field (HUDF) identified through the GRism ACS Program for Extragalactic Science (GRAPES) project using t…
Evidence for a Massive Post-Starburst Galaxy at z ~ 6.5
B. Mobasher, M. Dickinson, H. C. Ferguson +26
We present results from a search for high-redshift J--band ``dropout'' galaxies in the portion of the GOODS southern field that is covered by extremely deep imaging from the Hubble…
GRAPES, Grism Spectroscopy of the Hubble Ultra Deep Field: Description and Data Reduction
N. Pirzkal, C. Xu, S. Malhotra +19
We present deep unbiased spectroscopy of the Hubble Ultra Deep Field (UDF) carried out using the slitless grism spectroscopy mode of the Advance Camera for Surveys on the Hubble Sp…
A wide field survey at the Northern Ecliptic Pole: II. Number counts and galaxy colours in B_j, R, and K
M. W. Kuemmel, S. J. Wagner
We present a medium deep survey carried out in the three filters B_j, R and K. The survey covers homogeneously the central square degree around the Northern Ecliptic Pole (NEP) dow…
Multi-color Classification in the Calar Alto Deep Imaging Survey
C. Wolf, K. Meisenheimer, H. -J. Röser +12
We use a multi-color classification method introduced by Wolf, Meisenheimer & Roeser (2000) to reliably identify stars, galaxies and quasars in the up to 16-dimensional color space…
Steps toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XII. Ground-Based Monitoring of 3C 390.3
M. Dietrich, B. M. Peterson, P. Albrecht
Results of a ground-based optical monitoring campaign on 3C 390.3 in 1994-95 are presented. The broad-band fluxes (B, V, R, and I), the spectrophotometric optical continuum flux F(…