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arXiv · 1008.4129

Ground-based multisite observations of two transits of HD 80606b

A. Shporer·J. N. Winn·S. Dreizler·K. D. Colon·W. M. Wood-Vasey·P. I. Choi·C. Morley·C. Moutou·W. F. Welsh·D. Pollaco·D. Starkey·E. Adams·S. C. C. Barros·F. Bouchy·A. Cabrera-Lavers·S. Cerutti·L. Coban·K. Costello·H. Deeg·R. F. Diaz·G. A. Esquerdo·J. Fernandez·S. W. Fleming·E. B. Ford·B. J. Fulton·M. Good·G. Hebrard·M. J. Holman·M. Hunt·S. Kadakia·G. Lander·M. Lockhart·T. Mazeh·R. C. Morehead·B. E. Nelson·L. Nortmann·F. Reyes·E. Roebuck·A. R. Rudy·R. Ruth·E. Simpson·C. Vincent·G. Weaver·J. -W. Xie
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Abstract

We present ground-based optical observations of the September 2009 and January 2010 transits of HD 80606b. Based on 3 partial light curves of the September 2009 event, we derive a midtransit time of T_c [HJD] = 2455099.196 +- 0.026, which is about 1 sigma away from the previously predicted time. We observed the January 2010 event from 9 different locations, with most phases of the transit being observed by at least 3 different teams. We determine a midtransit time of T_c [HJD] = 2455210.6502 +- 0.0064, which is within 1.3 sigma of the time derived from a Spitzer observation of the same event.

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A. Shporer, J. N. Winn, S. Dreizler, K. D. Colon, W. M. Wood-Vasey, P. I. Choi, C. Morley, C. Moutou, W. F. Welsh, D. Pollaco, D. Starkey, E. Adams, S. C. C. Barros, F. Bouchy, A. Cabrera-Lavers, S. Cerutti, L. Coban, K. Costello, H. Deeg, R. F. Diaz, G. A. Esquerdo, J. Fernandez, S. W. Fleming, E. B. Ford, B. J. Fulton, M. Good, G. Hebrard, M. J. Holman, M. Hunt, S. Kadakia, G. Lander, M. Lockhart, T. Mazeh, R. C. Morehead, B. E. Nelson, L. Nortmann, F. Reyes, E. Roebuck, A. R. Rudy, R. Ruth, E. Simpson, C. Vincent, G. Weaver, J. -W. Xie. 2010-08-24. Ground-based multisite observations of two transits of HD 80606b. https://doi.org/10.1088/0004-637x%2F722%2F1%2F880

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