Program: GS-2005B-C-8

We propose a spectroscopic search for the thermal signature from the close orbiting extrasolar planet that orbits the G0V star HD75289. By adapting Doppler tomographic techniques used to search for starlight reflected from the "hot jupiters" around Upsilon Andromeda [17], Tau Bootis [18] and HD75289 [19], we intend to extend our search into the near-IR in order to detect and characterise the planet's thermal emission. The presence of such a signature has recently been confirmed by the detection of photometric thermal emission from the transiting planets TrES-1b [24] and HD209458b [25]. Due to the spectroscopic nature of our observations, a positive detection will yield the orbital inclination and hence true mass of the planet, when combined with existing radial velocity results. In addition, the resulting planet/star flux ratio will provide an opportunity to explore the atmospheric nature of these unusual objects.