NOAO >   Observing Info >   Approved Programs >   2011A-0456

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Proposal Information for 2011A-0456


PI: Joseph Gallagher, University of Cincinnati Raymond Walters College, gallagjl@uc.edu
Address: Department of Mathematics, Physics, and Computer Science, Raymond Walters College, University of Cincinnati, 9555 Plainfield Rd., Blue Ash, OH 45236, USA

CoI: Geoffrey Clayton, Louisiana State University
CoI: Jennifer Andrews, Louisiana State University
CoI: Ben Sugerman, Goucher College
CoI: Michael Barlow, University College London
CoI: Barbara Ercolano, University of Exeter
CoI: Roger Wesson, University College London
CoI: Joanna Fabbri, University College London
CoI: Margaret Meixner, STScI
CoI: Masaaki Otsuka, STScI
CoI: Douglas Welch, McMaster University

Title: A Search for Dust Formation in the CSM Around SN 2010hq

Abstract: Past studies of SNe II have revealed evidence of dust formation in the ejecta 300-600 days after explosion. However, the mass of dust synthesized is several orders of magnitude less than that needed to explain observed dust quantities at high-z. Recent studies of SNe exhibiting strong circumstellar interaction have found evidence of dust formation in the CSM as early as 50 days after explosion and have suggested that the addition of this new mechanism may reconcile this inconsisitency. We propose to obtain optical imaging and spectroscopy with GMOS-N, along with near- and mid- infrared photometry using NIRI and Michelle, of SN 2010hq to search for signs of CSM-interaction and to investigate the mechanism for early dust formation in its CSM. Taken together with the observations of SN 2010hq that are currently underway in 2010B, this program will provide thorough coverage during the expected window of early dust formation. This will be a vast improvement over previous studies that have had very limited temporal and wavelength coverage, and it will allow us to test the suggestion that these early-dust-forming SNe are producing significantly more dust and are a viable explaination for the large quantities of dust observed in the early universe.


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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