Computer Science
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop11617h&link_type=abstract
HST Proposal ID #11617. Cycle 17
Computer Science
Scientific paper
The HATNet project has discovered a transiting planet that is an extremely valuable target for reflected light observations {Bakos et al. 2006}. HAT-P-1b, with mass M_p=0.53 +/- 0.04 M_Jup, and radius R_p=1.20 +/- 0.05 R_Jup {Winn et al. 2007}, has a density comparable to that of HD 209458b. However, HAT-P-1b's P=4.46536 day orbital period is longer than that of HD 209458b. It is expected that the cloud composition and particulate size distribution of HAT-P-1b will differ from that of HD 209458b, due to the larger semimajor axis and lower effective temperature of HAT-P-1b. The resulting geometric albedo for HAT-P-1b should be larger than that of HD 209458b. Furthermore, HAT-P-1 orbits one component of a wide binary {ADS 16402A and ADS 16402B are G0V stars with 11.2" at 1.39 pc}, making this an ideal target for ultra-precise differential photometry. Therefore, we propose ACS/HRC slitless grism photometry near times of its secondary eclipse to make the first detection of reflected light from an extrasolar planet. Note: this program was awarded DD time in Cycle 15 but the observations were not executed before the ACS failed. Holman and Bakos are co-PIs on this proposal.;
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