NOAO >   Observing Info >   Approved Programs >   2010B-0116

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Proposal Information for 2010B-0116


PI: Maximilian Stritzinger, Carnegie Institution of Washington (Carnegie Obs.), mstritzinger@lco.cl
Address: Carnegie Observatories, Las Campanas Observatory, Casilla 601, La Serena, Chile

CoI: Alex Filippenko, UC Berkeley (Astronomy)
CoI: Gaston Folatelli, Universidad de Chile
CoI: Ryan Foley, Harvard-Smithsonian Center for Astrophysics
CoI: Mario Hamuy, Universidad de Chile
CoI: Weidong Li, UC Berkeley (Astronomy)
CoI: Paolo Mazzali, Max Planck Institute for Astrophysics
CoI: Mark Phillips, Carnegie Institution of Washington (Carnegie Obs.)
CoI: Giuliano Pignata, Universidad Andres Bello, Chile

Title: Multi-wavelength spectroscopic study of young Type Ia supernovae

Abstract: We request 12 hours of GMOS rapid ToO time with the aim to to obtain a detailed time-series of optical spectroscopy for two young Type Ia supernova (SN) expected to be discovered by our search programs. The GMOS spectra will be matched with multi-epoch ultraviolet spectrophotometry to be obtained simultaneous under our Swift ToO program (P.I. R. Foley), as well as other ground based optical and near-IR observations. These data will unveil an unprecedented view of the spectral energy distribution and its evolution. Through modeling the complete time-series of spectra the abundance stratification of elements in the outer half of the ejecta will be mapped out. This will allow us to determine the degree of mixing of freshly synthesized elements. Understanding the extent of mixing provides stringent constraints on the explosion process and properties of the progenitor. Such a data set will also provide the ability to search for signatures of asymmetries in the explosion, interaction between the outer ejecta and circumstellar matter, as well as the presence of unburned carbon.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



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