IRAC warm observations of epsilon Aurigae, first half of eclipse

Details IRAC warm observations of epsilon Aurigae, first half of eclipse IRAC warm observations of epsilon Aurigae, first half of eclipse

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010sptz.prop..543s&link_type=abstract

Spitzer Proposal ID #543

Astronomy and Astrophysics

Astronomy

Scientific paper

Epsilon Aurigae is one of the most unusual and famous eclipsing binary stars in all of astronomy, the subject of studies since 1824, and long defying explanation. We are requesting less than one total hour of Spitzer IRAC time to obtain a pair of IRAC channels 1 & 2 observations, during the 2010 April window, of the enigmatic binary, epsilon Aurigae, now in totality for the first time in 27 years. The goal of these observations includes the following: (a) having demonstrated during spring 2009 that IRAC could safely and accurately measure this bright star using a special method invented for the purpose, (b) we expect to derive precise photometric flux and color information about the relative contribution of the 550K disk and the 7500K F star to the light at these IRAC channels during a very unique orbital phase.

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