W. L. Freedman

The Carnegie Supernova Project: Analysis of the First Sample of Low-Redshift Type-Ia Supernovae (2009)

Folatelli, Gaston, Phillips, M. M., Burns, Christopher R., Contreras, Carlos, Hamuy, Mario, Freedman, W. L., ...

We present the analysis of the first set of low-redshift Type Ia supernovae (SNe Ia) by the Carnegie Supernova Project. Well-sampled, high-precision optical (ugriBV) and near-infrared (NIR; YJHKs)...

The Carnegie Supernova Project: First Photometry Data Release of Low-Redshift Type Ia Supernovae (2009)

Contreras, Carlos, Hamuy, Mario, Phillips, M. M., Folatelli, Gaston, Suntzeff, Nicholas B., Persson, S. E., ...

The Carnegie Supernova Project (CSP) is a five-year survey being carried out at the Las Campanas Observatory to obtain high-quality light curves of ~100 low-redshift Type Ia supernovae in a...

M32: Is There An Ancient, Metal-Poor Population? (2009)

Fiorentino, G., Monachesi, A., Trager, S., Lauer, T., Saha, A., Mighell, K., ...

We observed two fields near M32 with the ACS/HRC on board the Hubble Space Telescope, located at distances of about 1.8' and 5.4' (hereafter F1 and F2, respectively) from the center of M32. To obtain...

SN 2003bg: The First Type IIb Hypernova (2009)

Hamuy, Mario, Deng, Jinsong, Mazzali, Paolo A., Morrell, Nidia I., Phillips, Mark M., Roth, Miguel, ...

Optical and near-infrared photometry and optical spectroscopy are reported for SN 2003bg, starting a few days after explosion and extending for a period of more than 300 days. Our early-time spectra...