Other
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.3901r&link_type=abstract
American Astronomical Society, 198th AAS Meeting, #39.01; Bulletin of the American Astronomical Society, Vol. 33, p.838
Other
Scientific paper
We present 0.8 to 2.5 micron spectra of the Type Ia supernova 2000cx from 8 and 7 days before maximum light. The spectra are similar to those of other type Ia SNe observed shortly after outburst in the infrared in that the continuum shape follows that of a hot blackbody upon which is superposed a small number of absorption features. The most prominent of these absorptions is due to the Mg II multiplet centered at 1.0926 microns (rest frame), but Ca II with a P-Cygni-like profile at 1.2 microns, and a weak broad Si II feature at 1.65 microns are also present. There is no evidence of the He I singlet at 2.0581 microns. Velocities in the Mg II feature extend to about 20,000 km/sec indicating that carbon burning reached the outermost layers of the progenitor. The observations were obtained at the University of California's Lick Observatory using The Aerospace Corporation's Near-Infrared Imaging Spectrograph. Support for this research was provided by The Aerospace Corporation's Internal Research and Development and MOIE Programs, and by NASA.
Armstrong T. K.
Hoeflich Peter
Lynch David K.
Mazuk Stephan M.
Puetter Richard C.
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