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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…
Searching for Variables in One of the WHAT Fields
Avi Shporer, Tsevi Mazeh, Amit Moran +2
We present preliminary results on a single field observed by WHAT, a small-aperture short focal length automated telescope with an 8.2 deg x 8.2 deg field of view, located at the W…
Photometric Analysis of the Optical Counterpart of the Black Hole HMXB M33 X-7
Avi Shporer, Joel Hartman, Tsevi Mazeh +1
Aims: Study the high-mass X-ray binary X-7 in M33 using broad-band optical data. Methods: We used recently published CFHT r' and i' data for variable stars in M33 to extract the li…
Photometric follow-up of the transiting planet WASP-1b
Avi Shporer, Omer Tamuz, Shay Zucker +1
We report on photometric follow-up of the recently discovered transiting planet WASP-1b. We observed two transits with the Wise Observatory 1m telescope, and used a variant of the…
Long-Term V-Band Monitoring of the Bright Stars of M33 at the Wise Observatory
Avi Shporer, Tsevi Mazeh
We have conducted a long-term V-band photometric monitoring of M33 on 95 nights during four observing seasons (2000 - 2003). A total number of 6418 lightcurves of bright objects in…
Refined parameters of the planet orbiting HD 189733
G. A. Bakos, H. Knutson, F. Pont +13
We report on the BVRI multi-band follow-up photometry of the transiting extrasolar planet HD 189733b. We revise the transit parameters and find planetary radius RP = 1.154+/- 0.032…