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Constraints on Jupiters from observations of Galactic bulge microlensing events during 2000 |
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| Authors: | Yiannis Tsapras † Keith Horne Richard Carson Javier Méndez Alvarez Dan Batcheldor Alister W Graham Philip A James Johan Knapen Hannah Quaintrell Ignacio Gonzalez Serrano Peter Sorensen Nick Wooder |
| Institution: | School of Physics and Astronomy, University of St Andrews, St Andrews, Fife KY16 9SS;Department of Astronomy, University of Texas, Austin, TX 78712, USA;Isaac Newton Group of Telescopes (ING), Observatorio del Roque de los Muchachos, Instituto de Astrofísica de Canarias, La Palma, Spain;Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain;Astrophysics Research Institute, Liverpool John Moores University, Birkenhead CH41 1LD;Department of Physical Sciences, University of Hertfordshire, Hatfield, Herts AL10 9AB;Department of Physics and Astronomy, The Open University, Milton Keynes MK7 6AA;The Technology Partnership, Melbourn Science Park, Cambridge Road, Melbourn, Royston SG8 6EE |
| Abstract: | We present observations of eight Galactic bulge microlensing events taken with the 1.0-m Jacobus Kapteyn Telescope (JKT) on La Palma during 2000 June and July. The JKT observing schedule was optimized using a prioritizing algorithm to automatically update the target list. For most of these events we have sampled the light curves at times where no information was available from the OGLE alert team. We assume a point-source point-lens (PSPL) model and perform a maximum likelihood fit to both our data and the OGLE data to constrain the event parameters of the fit. We then refit the data assuming a binary lens and proceed to calculate the probability of detecting planets with mass ratio q = 10 |
| Keywords: | gravitational lensing techniques: photometric planetary systems Galaxy: bulge |