Measuring Asymmetries of Ejecta in Core-Collapse SNRs

Details Measuring Asymmetries of Ejecta in Core-Collapse SNRs Measuring Asymmetries of Ejecta in Core-Collapse SNRs

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008noao.prop..562w&link_type=abstract

NOAO Proposal ID #2008A-0562

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Scientific paper

We are exploring both chemical inhomogeneities and asymmetries in the distribution of ejecta in young remnants from core-collapse SNe, concentrating on Puppis A and G292.0+1.8, two of the three such SNRs in the Galaxy. We propose to use the Hydra Spectrograph on the Blanco for a comprehensive spectroscopic survey of dozens of filaments in both remnants---most of them apparently near-pure ejecta---with sufficient resolution and signal-to-noise to give definitive measurements for the radial velocities, and with enough wavelength coverage and sensitivity that we can estimate abundances. The radial-velocity data will be combined with proper-motion measurements (complete or in progress) to obtain a 3-dimensional picture of the current distribution of ejecta. Finally, imaging from the 0.9m will extend the baseline for our ongoing proper-motion studies of these and other young SNRs.

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