Physics
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...9e...5l&link_type=abstract
Supernovae: One Millennium After SN1006, 26th meeting of the IAU, Joint Discussion 9, 17-18 August 2006, Prague, Czech Republic,
Physics
Scientific paper
Optical and UV emission from SN1006 is observed on the periphery of the SNR, particularly in the NW, and arises as material from interstellar gas is ionized behind the shock front. The shapes of the emission lines have been used to infer a shock velocity of about 2900 km/s and to show that the electron and ion temperatures are close to that expected from standard shock theory. The combination of the shock velocity and the proper motion of the filaments in the NE accurately locates SN1006 at a distance of 2.2 kpc, some 550 pc above the plane of the disk. At UV wavelengths, ejecta from SN1006 has also been observed in as broad absorption lines of Si, Ca and Fe in the spectra the light of the Schweitzer-Middleditch star and several quasars. The observations appear to limit the mass of Fe in SN1006 to less than 0.16 M[sun], much less than expected from models of Ia supernovae. In this brief review of the UV and optical properties of SN1006, I will review how these observations yield a fairly consistent description of SN1006, and suggest what further observations might be undertaken to extend our understanding of SN1006 in its second millennium.
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