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UBVRI Light Curves of 44 Type Ia Supernovae
Saurabh Jha, Robert P. Kirshner, Peter Challis +2
We present UBVRI photometry of 44 type-Ia supernovae (SN Ia) observed from 1997 to 2001 as part of a continuing monitoring campaign at the Fred Lawrence Whipple Observatory of the…
Chemistry and Star Formation in the Host Galaxies of Type Ia Supervovae
J. S. Gallagher, P. M. Garnavich, P. Berlind +3
We study the effect of environment on the properties of type Ia supernovae by analyzing the integrated spectra of 57 local type Ia supernova host galaxies. We deduce from the spect…
Extending the Search for Counterrotating Gas and Stars in Galaxies: A Study of Late-Type Dwarfs
J. M. Guie, S. J. Kannappan, Z. Balog +1
In a previous study on gas-stellar counterrotation for a large sample of E/S0 and spiral galaxies (Kannappan & Fabricant 2001), two dwarf irregular galaxies were included, of which…
Deep Photometry of GRB 041006 Afterglow: Hypernova Bump at Redshift z=0.716
K. Z. Stanek, P. M. Garnavich, P. A. Nutzman +17
We present deep optical photometry of the afterglow of gamma-ray burst (GRB) 041006 and its associated hypernova obtained over 65 days after detection (55 R-band epochs on 10 diffe…