--------------------------------------------- PLANET ANOMALY UPDATE 2005 #9-1 (issued 22-Jul, 12:20 UT) --------------------------------------------- Caustic passage of finite source in OGLE 2005-BLG-226 Dear Colleagues, PLANET data collected with the Danish 1.54m at ESO LaSilla (Chile) between HJD=2453573.523 (22-Jul, 0:33 UT) and HJD=2453573.807 (22-Jul, 7:22 UT), OGLE data extending this range to earlier epochs including HJD=2453573.473 (21-Jul, 23:21 UT), and PLANET data from the Perth 0.6m near Bickley (Western Australia) taken between HJD=2453573.939 (22-Jul, 10:32 UT) and HJD=2453574.006 (22-Jul, 12:08 UT) favour the finite source passing over several caustic lines at once (e.g. near a cusp) rather than the light curve being due a the caustic entering a single fold line. By estimating the source to have taken 9-15 hours from the caustic entry to the observed peak near HJD=2453573.75 (22-Jul, 6:00 UT), assuming rough symmetry in agreement with the most recent data, a caustic exit is expected between HJD=2453574.12 (22-Jul, 14:50 UT) and HJD=2453574.38 (22-Jul, 21:10 UT). A light curve plot and data files for this event can be retrieved from our webpages. Event: OGLE 2005-BLG-226 RA (J2000): 17:44:40.53 Dec (J2000): -34:09:08.8 The baseline I magnitude reported by the OGLE team is 16.66 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.