Taming the Invisible Monster with COS: Eclipse Spectroscopy of Epsilon Aurigae

Details Taming the Invisible Monster with COS: Eclipse Spectroscopy of Epsilon Aurigae Taming the Invisible Monster with COS: Eclipse Spectroscopy of Epsilon Aurigae

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hst..prop12216h&link_type=abstract

HST Proposal ID #12216. Cycle 18

Computer Science

Scientific paper

We request three single orbit COS observations of the enigmatic binary epsilon Aurigae. This 27-year binary will be in total eclipse during all of 2010 and into spring 2011. COS observations are needed in order to {1} confirm, via higher S/N UV spectroscopy, the FUSE observation that a B5V star lurks inside the eclipse-causing dust disk, {2} obtain temperature and density diagnostics of the line of sight columns during eclipse for inclusion in the ongoing, panchromatic studies of this rare event, and {3} allow, in coordination with Spitzer Space Telescope observations, a detailed view of the "invisible" large eclipsing dust disk surrounding the B star. Only COS has the full UV wavelength coverage to sample two of the three components in this binary {the F and B stars} with the SNR to accomplish our scientific goals.;

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