Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...212.1004d&link_type=abstract
American Astronomical Society, AAS Meeting #212, #10.04; Bulletin of the American Astronomical Society, Vol. 40, p.202
Astronomy and Astrophysics
Astronomy
1
Scientific paper
The Extrasolar Planet Observation and Characterization (EPOCh) investigation is a component of the EPOXI mission, recently selected as a Mission of Opportunity for the Discovery program. EPOCh will use the CCD detector of the High Resolution Instrument on the Deep Impact spacecraft to perform high precision visible light photometry of five bright transiting planet systems. The observations were acquired in Jan-May 2008, during the cruise to comet Hartley-2. EPOCh is searching for reflected light from the giant transiting planets at secondary eclipse, and for the signatures of rings and moons. EPOCh will also be sensitive to terrestrial planets in these systems, using two detection methods. First, EPOCh will search for direct transit events caused by approximately Earth-sized planets, particularly "hot Earths" that are predicted to be captured in low order mean motion resonances with the giant planets. Second, EPOCh will perform transit timing measurements for the giant planets, and search for timing variations due to terrestrial planet perturbers. EPOCh observed our Earth in a global synoptic view, characterizing its properties as an astronomical object, so as to support future extrasolar terrestrial planet imaging missions.
A'Hearn Michael
Ballard Sarah
Barry Richard
Charbonneau David
Christiansen Jesper
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