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Relative Photometry of HAT-P-1b Occultations

Author(s): Béky, Bence; Holman, Matthew J; Gilliland, Ronald L.; Bakos, Gaspar Aron; Winn, Joshua N; et al

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dc.contributor.authorBéky, Bence-
dc.contributor.authorHolman, Matthew J-
dc.contributor.authorGilliland, Ronald L.-
dc.contributor.authorBakos, Gaspar Aron-
dc.contributor.authorWinn, Joshua N-
dc.contributor.authorNoyes, Robert W-
dc.contributor.authorSasselov, Dimitar D-
dc.date.accessioned2019-04-10T19:31:10Z-
dc.date.available2019-04-10T19:31:10Z-
dc.date.issued2013-06en_US
dc.identifier.citationBéky, Bence, Holman, Matthew J, Gilliland, Ronald L, Bakos, Gáspár Á, Winn, Joshua N, Noyes, Robert W, Sasselov, Dimitar D. (2013). Relative Photometry of HAT-P-1b Occultations. \aj, 145 (166 - 166. doi:10.1088/0004-6256/145/6/166en_US
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1qd8t-
dc.description.abstractWe present Hubble Space Telescope ( HST ) Space Telescope Imaging Spectrograph observations of two occultations of the transiting exoplanet HAT-P-1b. By measuring the planet to star flux ratio near opposition, we constrain the geometric albedo of the planet, which is strongly linked to its atmospheric temperature gradient. An advantage of HAT-P-1 as a target is its binary companion ADS 16402 A, which provides an excellent photometric reference, simplifying the usual steps in removing instrumental artifacts from HST time-series photometry. We find that without this reference star, we would need to detrend the lightcurve with the time of the exposures as well as the first three powers of HST orbital phase, and this would introduce a strong bias in the results for the albedo. However, with this reference star, we only need to detrend the data with the time of the exposures to achieve the same per-point scatter, therefore we can avoid most of the bias associated with detrending. Our final result is a 2 σ upper limit of 0.64 for the geometric albedo of HAT-P-1b between 577 and 947 nm.en_US
dc.language.isoen_USen_US
dc.relation.ispartofAstronomical Journalen_US
dc.rightsFinal published version. This is an open access article.en_US
dc.titleRelative Photometry of HAT-P-1b Occultationsen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1088/0004-6256/145/6/166-
dc.date.eissued2013-05-13en_US
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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