PI: Dina Drozdov, Clemson University, firstname.lastname@example.org
Address: Physics Department, 118 Kinard Laboratory, Clemson, South Carolina 29634-0978, USA
CoI: Mark Leising, Clemson University
CoI: Peter Milne, Steward Observatory
CoI: Ginger Bryngelson, Francis Marion University
Title: Probing Type Ia Supernovae at Late Epochs
Abstract: We continue and supplement the study of late light curves of nearby Type Ia supernovae (SNe Ia) in the optical and near-infrared (NIR). Our aim is to investigate the color evolution and power at late epochs (>600 days past maximum) for SN 2011fe and SN 2012cg. SN 2011fe was the brightest supernovae in the past 30 years, and SN 2012cg was the brightest in 2012, making both excellent candidates for light echoes. We will also extend the light curve of SN 2012ht. Our previous studies have shown the importance of late light curves, especially in the NIR, where a plateau in brightness has been observed. Observations of normal SNe Ia in these wavelengths will allow us to not only extend our studies, but also investigate the thermodynamics of the ejecta and the distribution of the supernova material, which can put constraints on the explosion mechanisms. The apparent excess power output at late times is also of interest.
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