Mathematics – Logic
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545405m&link_type=abstract
American Astronomical Society, AAS Meeting #215, #454.05; Bulletin of the American Astronomical Society, Vol. 42, p.469
Mathematics
Logic
1
Scientific paper
Initial results from an optical spectroscopic survey of the young supernova remnant Cassiopeia A (Cas A) will be presented. Radial velocities and relative emission line strengths for Cas A's optical ejecta were extracted from 125 long slit spectra spaced 3-5 arcseconds apart covering the wavelength region 3500-8000 Angstroms (resolution 6-10 Angstroms) obtained on the MDM 2.4m telescope. These data were used to make a three dimensional kinematic reconstruction of the remnant's optical emission which we then compare with 3D Doppler reconstructions of Cas A using Spitzer infrared data and Chandra X-ray data to fill in the remnant's true global structure. This combined data set yields a detailed look at the morphological and kinematic structures of a young CCSN remnant across a wide range of temperature and density regimes. We will also show data on Cas A's NE and SW streams of high-velocity ejecta (aka ''jets'') which lead to an understanding of their nature and relation to the remnant's overall dynamics.
Fesen Robert
Milisavljevic Dan
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