A Hot Saturn Planet Orbiting HD 88133, from the N2K Consortium
/ Authors
D. Fischer, G. Laughlin, R. P. Butler, G. Marcy, J. Johnson, G. Henry, J. Valenti, S. Vogt, M. Ammons, S. Robinson
and 13 more authors
G. Spear, J. Strader, Peter Edward Driscoll, A. Fuller, T. Johnson, E. Manrao, C. McCarthy, M. Muñoz, K. Tah, J. Wright, S. Ida, B. Sato, D. Minniti
/ Abstract
The N2K consortium is carrying out a distributed observing campaign with the Keck, Magellan and Subaru telescopes, as well as the automatic photometric telescopes of Fairborn Observatory, in order to search for short-period gas giant planets around metal-rich stars. We have established a reservoir of more than 14,000 main sequence and subgiant stars, closer than 110 pc, brighter than V=10.5 and with $0.4 0.1$ dex for this survey. We outline the strategy and report the detection of a planet orbiting the metal-rich G5IV star HD 88133 with a period of 3.41 days, semi-velocity amplitude, K=35.7 \mse and \msini = 0.29 \mjupe. Photometric observations reveal that HD 88133 is constant on the 3.415-day radial velocity period to a limit of 0.0005 mag. Despite a transit probability of 15.6%, our photometry rules out the shallow transits predicted by the large stellar radius.
Journal: arXiv: Astrophysics