NOAO > Observing Info > Approved Programs > 2011B-0503
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NOAO > Observing Info > Approved Programs > 2011B-0503 |
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PI: Dan Milisavljevic, Dartmouth College, danmil@dartmouth.edu
Address: Department of Physics and Astronomy, 6127 Wilder Laboratory, Hanover, NH, 03755-3528, USA
CoI: Alicia Soderberg, Harvard University
CoI: Roger Chevalier, University of Virginia
CoI: Robert Kirshner, Harvard University
CoI: Robert Fesen, Dartmouth College
CoI: Elena Pian
CoI: Paolo Mazzali
CoI: Claes Fransson
CoI: Stephan Hachinger
Title: Resolving SN Ejecta Asymmetries with High-Dispersion Spectra
Abstract:
The connection between gamma-ray bursts and stripped-envelope supernovae is
well established in broad terms. Clearly some massive stars are able to give
rise to relativistic jets at the moment of explosion. A more fundamental
question has become whether ejecta asymmetries are inherent to all
stripped-envelope supernovae. Nebular spectroscopy of supernovae ( > 2 months
post explosion) probe the deepest layers within the explosion and may reveal
strong deviations from the expected spherical "onion-structure". Along this
line, recent low resolution nebular spectra have revealed evidence for ejecta
asymmetries, but the extent of the asymmetries and a deeper understanding
require higher resolution. Here we propose for high-dispersion nebular
spectra of the nearest stripped envelope SNe designed to directly address
this puzzle.
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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NOAO > Observing Info > Approved Programs > 2011B-0503 |
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