Physics
Scientific paper
Feb 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007noao.prop..593r&link_type=abstract
NOAO Proposal ID #2007A-0593
Physics
Scientific paper
The SuperMACHO collaboration has discovered echoes from four ancient supernovae (SNe) in the Large Magellanic Cloud. The echoes were discovered using our SuperMACHO MOSAIC data difference images. The echo motions point to three supernova remnants (SNRs) which are listed as three of the six youngest SNRs in the LMC. These three remnants are also identified as Type Ia events, based on the X-ray spectral abundances. We have dated these echoes at 400-800 years, and we have obtained spectroscopy of the echo light, representing actual maximum- light spectroscopy of SNe which were at maximum hundreds of years ago. While we continue our analysis of the LMC data, we have realized the opportunity represented by the study of echos from historical SNe is even more fascinating for Galactic SNe, providing the possibility of getting spectroscopy of historical SNe such as SN1006, Kepler's SN, and RCW 86. We propose to obtain images of regions of significant dust concentration near these Galactic SNRs. We have already obtained f irst epoch and a few second epoch images for SN1006 and Kepler with previously scheduled time, and need additional epochs to discover the echos and measure their apparent motion.
Becker Andy
Bergmann Marcel
Clocchiatti Alejandro
Cook Kem
Damke Guillermo
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