Hamuy Wackenhut, Mario; Pinto, Philip A.; Maza Sancho, José; Suntzeff, Nicholas B.; Phillips, M. M.; Eastman, Ronald G.; Smith, R. C.; Corbally, C. J.; Burstein, D.; Li, Yong; Ivanov, Valentin; Moro Martin, Amaya; Strolger, L. G.; De Souza, R. E.; Dos Anjos, S.; Green, Elizabeth M.; Pickering, T. E.; González, Luis; Antezana, Roberto; Wischnjewsky, Marina; Galaz, Gaspar, 1967-; Roth, M.; Person, S. E.; Schommer, R. A. (2001-09-10)
We present optical and infrared spectroscopy of the first 2 months of evolution of the Type II supernova SN 1999em. We combine these data with high-quality optical/infrared photometry beginning only 3 days after shock ...
