A Search for Thermal Emission from Non-transiting Extrasolar Planets

Details A Search for Thermal Emission from Non-transiting Extrasolar Planets A Search for Thermal Emission from Non-transiting Extrasolar Planets

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21340205c&link_type=abstract

American Astronomical Society, AAS Meeting #213, #402.05; Bulletin of the American Astronomical Society, Vol. 41, p.191

Astronomy and Astrophysics

Astronomy

Scientific paper

We describe our ongoing search for the Doppler-shifted thermal emission spectra of two hot extrasolar planets. Using NIRSPEC at the Keck Observatory we obtained 100 high-resolution spectra of the tau Boo and 55 Cnc systems. Our methods are unique in several respects. First, we use well-characterized telluric lines (>8; per order) to calibrate the wavelength scale in every frame. In addition to standard techniques such as Principal Component Analysis, we use a set of telluric transmission models to remove the temporal variability of terrestrial atmospheric features. Finally, we intend to directly disentangle the faint planetary and bright stellar spectra using direct tomographic techniques, eliminating a dependence on models of these heretofore uncharacterized planets.

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