--------------------------------------------- PLANET ANOMALY UPDATE 2005 #10-3 (issued 28-Jul, 18:05 UT) --------------------------------------------- OGLE 2005-BLG-327: Caustic exit now underway - Planetary origin? Dear Colleagues, PLANET data from the Canopus 1.0m near Hobart (Tasmania) and the Danish 1.54m at ESO LaSilla (Chile) as well as OGLE data taken during the night that started on 27-Jul show that the observed rise in OGLE 2005-BLG-327 steepened significantly, reaching about 0.7 mag/day. Latest Tasmanian data from the subseqent night initially show a continuation of this trend, followed by a flattening, suggesting that the expected caustic exit is in progress and the associated peak has been reached. A first exploration of parameter space (by D. Kubas) revealed the possibility that the observed anomaly results from a jovian planet orbiting the lens star, while there is a roughly similar probability for a more moderate mass ratio between the components of the considered binary lens. Continued monitoring of the event is necessary in order to confirm or reject the hypothesis of a planet and for being able to put tight constraints on its properties. Light curve plot and PLANET data for this event are available on our webpages. Event: OGLE 2005-BLG-327 RA (J2000): 17:59:05.53 Dec (J2000): -31:47:58.2 The baseline I magnitude reported by the OGLE team is 19.99 For more information: PLANET: http://planet.iap.fr OGLE: http://www.astrouw.edu.pl/~ftp/ogle/ -------------- On behalf of the PLANET collaboration Martin Dominik %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% If you prefer not to receive further PLANET Anomaly Alerts, please send an e-mail to planet@iap.fr.