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GRB 021004: A Possible Shell Nebula around a Wolf-Rayet Star Gamma-Ray Burst Progenitor
N. Mirabal, J. P. Halpern, R. Chornock +2
The rapid localization of GRB 021004 by the HETE-2 satellite allowed nearly continuous monitoring of its early optical afterglow decay, as well as high-quality optical spectra that…
23 High Redshift Supernovae from the IfA Deep Survey: Doubling the SN Sample at z>0.7
Brian J. Barris, John Tonry, Stephane Blondin +29
We present photometric and spectroscopic observations of 23 high redshift supernovae spanning a range of z=0.34-1.03, 9 of which are unambiguously classified as Type Ia. These supe…
Color-selected galaxies at z~6 in the Great Observatories Origins Deep Survey
M. Dickinson, D. Stern, M. Giavalisco +15
We report early results on galaxies at z~6, selected from Hubble Space Telescope imaging for the Great Observatories Origins Deep Survey. Spectroscopy of one object with the Advanc…
Photometry and Spectroscopy of GRB 030329 and Its Associated Supernova 2003dh: The First Two Months
T. Matheson, P. M. Garnavich, K. Z. Stanek +4
We present extensive optical and infrared photometry of the afterglow of gamma-ray burst (GRB) 030329 and its associated supernova (SN) 2003dh over the first two months after detec…
Identification of Type Ia Supernovae at Redshift 1.3 and Beyond with the Advanced Camera for Surveys on HST
Adam G. Riess, Louis-Gregory Strolger, John Tonry +15
We present discoveries of SNe Ia at z > 1 and the photometric diagnostic used to discriminate them from other types of SNe detected during the GOODS Hubble Space Telescope Treasury…
Optical Photometry and Spectroscopy of the SN 1998bw-like Type Ic Supernova 2002ap
Ryan J. Foley, Marina S. Papenkova, Brandon J. Swift +6
We present optical photometric and spectral data of the peculiar Type Ic SN 2002ap. Photometric coverage includes UBVRI bands from 2002 January 30, the day after discovery, through…