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Can Jupiters be found by monitoring Galactic bulge microlensing events from northern sites?
Authors:Yiannis Tsapras  Rachel A Street  Keith Horne  Alan Penny  Fraser Clarke  Hans Deeg  Francisco Garzon  Simon Kemp  Maria Rosa Zapatero Osorio  Alejandro Oscoz Abad  Santiago Madruga Sanchez  Carlos Eiroa  Alcione Mora  Antxon Alberdi  rew Cameron  John K Davies  Roger Ferlet  Carol Grady  Allan W Harris  Javier Palacios  reas Quirrenbach  Heike Rauer  Jean Schneider  Dolf de Winter  Bruno Merin  Enrique Solano
Institution:1School of Physics and Astronomy, University of St Andrews, Fife KY16 9SS;2Department of Astronomy, University of Texas, Austin TX 78712, USA;3Rutherford Appleton Laboratories, Chilton, Didcot, Oxon OX11 0QX;4Institute of Astronomy, Madingley Road, Cambridge CB3 0HA;5Instituto de Astrofisica de Canarias, Canary Islands, Spain;6Instituto de Astrofisica de Andalucia, Granada, Spain;7Dpto. Fisica Teorica. Universidad Autonoma de Madrid. Spain;8Joint Astronomy Center, Hilo, Hawaii, USA;9Institute d'Astrophysique, CNRS, Paris, France;10Eureka Scientific, USA;11Institute of Planetary Exploration, DLR, Berlin, Germany;12University of California, San Diego, La Jolla, CA, USA;13Observatoire de Paris, Meudon, France;14Space Research Organization of the Netherlands, Groningen, the Netherlands;15Laboratorio Astrofisica Espacial y Fisica Fundamental, Madrid, Spain
Abstract:In 1998 the EXPORT team monitored microlensing event light curves using a charge-coupled device (CCD) camera on the IAC 0.8-m telescope on Tenerife to evaluate the prospect of using northern telescopes to find microlens anomalies that reveal planets orbiting the lens stars. The high airmass and more limited time available for observations of Galactic bulge sources make a northern site less favourable for microlensing planet searches. However, there are potentially a large number of northern 1-m class telescopes that could devote a few hours per night to monitor ongoing microlensing events. Our IAC observations indicate that accuracies sufficient to detect planets can be achieved despite the higher airmass.
Keywords:gravitational lensing  techniques: photometric  planetary systems
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