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The Transit Light Curve Project. V. System Parameters and Stellar Rotation Period of HD 189733
Joshua N. Winn, Matthew J. Holman, Gregory W. Henry +8
We present photometry of HD 189733 during eight transits of its close-in giant planet, and out-of-transit photometry spanning two years. Using the transit photometry, we determine…
The N2K Consortium VI: Doppler Shifts Without Templates and Three New Short-Period Planets
John A. Johnson, Geoffrey W. Marcy, Debra A. Fischer +7
We present a modification to the iodine cell Doppler technique that eliminates the need for an observed stellar template spectrum. For a given target star, we iterate toward a synt…
The Orbit and Occultations of KH 15D
Joshua N. Winn, Catrina M. Hamilton, William J. Herbst +4
The unusual flux variations of the pre-main-sequence binary star KH 15D have been attributed to occultations by a circumbinary disk. We test whether or not this theory is compatibl…