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Extrasolar planet detections with gravitational microlensing

Published online by Cambridge University Press:  01 October 2007

Shude Mao ,
Eamonn Kerins  and
Nicholas J. Rattenbury
Shude Mao
Affiliation:
Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL, UK email: ([email protected], [email protected], [email protected])
Eamonn Kerins
Affiliation:
Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL, UK email: ([email protected], [email protected], [email protected])
Nicholas J. Rattenbury
Affiliation:
Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL, UK email: ([email protected], [email protected], [email protected])
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Abstract

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Microlensing light curves due to single stars are symmetric and typically last for a month. So far about 4000 microlensing events have been discovered in real-time, the vast majority toward the Galactic centre. The presence of planets around the primary lenses induces deviations in the usual light curve which lasts from hours (for an Earth-mass [M⊕] planet) to days (for a Jupiter-mass [Mj] planet). Currently the survey teams, OGLE and MOA, discover and announce microlensing events in real-time, and follow-up teams (together with the survey teams) monitor selected events intensively (usually with high magnification) in order to identify anomalies caused by planets. So far four extrasolar planets have been discovered using the microlensing technique, with half a dozen new planet candidates identified in 2007 (yet to be published). Future possibilities include a network of wide-field 2m-class telescopes from the ground (which can combine survey and follow-up in the same setup) and a 1m-class survey telescope from space.

Keywords

gravitational lensingGalaxy: centreplanetary systems
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S249: Exoplanets: Detection, Formation and Dynamics , October 2007 , pp. 25 - 30
Copyright
Copyright © International Astronomical Union 2008

References

Alcock, C., et al. 1993, Nature, 365, 621CrossRefGoogle Scholar
Alcock, C., et al. 2001, Nature, 414, 617CrossRefGoogle Scholar
Aubourg, E., et al. 1993, Nature, 365, 623CrossRefGoogle Scholar
Beaulieu, J.-P., et al. 2006, Nature, 439, 437CrossRefGoogle Scholar
Bennett, A. & Rhie, S. H. 1992, ApJ, 472, 660CrossRefGoogle Scholar
Bennett, D. P., Anderson, J., & Gaudi, B. S. 2007a, ApJ, 660, 781CrossRefGoogle Scholar
Bennett, D. P., et al. 2007b, arXiv:0704.0454Google Scholar
Bond, I. A., et al. 2004, ApJ, 606, L155CrossRefGoogle Scholar
Calchi Novati, S. et al. 2005, A&A, 443, 911Google Scholar
Cassan, A., Sumi, T., & Kubas, D. 2008, in: Sun, Y.-S., Ferraz-Mello, S. & Zhou, J.-L., (eds.), Exoplanets: Detection, Formation and Dynamics, Proc. IAU Symposium No. 249 (Suzhou, China), p. 31CrossRefGoogle Scholar
Chung, S.-J., Kim, D., Darnley, M. J., Duke, J. P., Gould, A., Han, C., Jeon, Y.-B., Kerins, E., Newsam, A., & Park, B.-G. 2006, ApJ, 650, 432CrossRefGoogle Scholar
Crotts, A. P. S. 1992, ApJ, 399, 43CrossRefGoogle Scholar
Darnley, M. J., Kerins, E., Newsam, A., Duke, J. P., Goud, A., Han, C., Ibrahimov, M. A., Im, M., Jeon, Y.-B., Karimov, R. G., Lee, C.-U., & Park, B.-G. 2007, ApJ, 661, L45CrossRefGoogle Scholar
Di Stefano, R., Mao, S., 1996, ApJ, 457, 93CrossRefGoogle Scholar
Dominik, M. 1999, A&A, 349, 108Google Scholar
Dominik, M. 2007, MNRAS, 377, 1679CrossRefGoogle Scholar
Dominik, M., Rattenbury, N. J., Allan, A., Mao, S. et al. , 2007 MNRAS, 380, 792CrossRefGoogle Scholar
Dong, S., DePoy, D. L., Gaudi, B. S., Gould, A., et al. 2006, ApJ, 642, 842CrossRefGoogle Scholar
Gaudi, B. S. & Gould, A. 1997, ApJ, 486, 85CrossRefGoogle Scholar
Gaudi, B. S., et al. 2002, ApJ, 566, 463CrossRefGoogle Scholar
Gaudi, B. S. 2007, in: Fischer, D., Rasio, F., Thorsett, S. and Wolszczan, A. (eds.), Extreme Solar Systems (ASP Conference Series), arXiv:0711.1614Google Scholar
Gould, A. 1996, ApJ, 470, 201CrossRefGoogle Scholar
Gould, A. & Loeb, A. 1992, ApJ, 396, 104CrossRefGoogle Scholar
Gould, A. & Gaucherel, C. 1997, ApJ, 477, 580CrossRefGoogle Scholar
Gould, A., et al. 2006, ApJ, 644, L37CrossRefGoogle Scholar
Gould, A., Gaudi, B. S., & Bennett, D. P 2007, arXiv:0704.0767Google Scholar
Griest, K. & Safizadeh, N. 1998, ApJ, 500, 37CrossRefGoogle Scholar
Ida, S. & Lin, D. N. C. 2004, ApJ, 616, 567CrossRefGoogle Scholar
de Jong, J. et al. 2006, A&A, 446, 855Google Scholar
Kerins, E. 2006, MNRAS, 365, 1099CrossRefGoogle Scholar
Kiraga, M. & Paczynski, B. 1994, ApJ, 430, L101CrossRefGoogle Scholar
Kozlowski, S., Wozniak, P. R., Mao, S., Smith, M. C., Sumi, T., Vestrand, W. T., & Wyrzykowski, L. 2006, MNRAS, 370, 435CrossRefGoogle Scholar
Kozlowski, S., Wozniak, P. R., Mao, S., & Wood, A. 2007, ApJ, in pressGoogle Scholar
Mao, S., Smith, M. C., Wozniak, P., Udalski, A., Szymanski, M., Kubiak, M., Pietrzyski, G., Soszyski, I., & Zebrun, K. 2002, MNRAS, 329, 349CrossRefGoogle Scholar
Mao, S. & Paczynski, B. 1991, ApJ, 374, L37CrossRefGoogle Scholar
Muraki, Y., Sumi, T., Abe, F., Bond, I. et al. 1999, Progress of Theoretical Physics, 133, 233CrossRefGoogle Scholar
Paczynski, B. 1986 ApJ, 304, 1CrossRefGoogle Scholar
Paczynski, B. 1996 ARAA, 34, 419CrossRefGoogle Scholar
Rattenbury, N. J., Bond, I. A., Skuljan, J., & Yock, P. C. M. 2002, MNRAS, 335, 159CrossRefGoogle Scholar
Rattenbury, N. J. 2006, Modern Physics Letters A, 21, 919CrossRefGoogle Scholar
Rattenbury, N. J., Mao, S.Debattista, V. P., Sumi, T., Gerhard, O., & de Lorenzi, F. 2007, MNRAS, 378, 1165CrossRefGoogle Scholar
Rattenbury, N. J., Mao, S., Sumi, T., & Smith, M. C. 2007 MNRAS, 378, 1064CrossRefGoogle Scholar
Snodgrass, C., Horne, K., & Tsapras, Y. 2004, MNRAS, 351, 967CrossRefGoogle Scholar
Stanek, K. Z., Udalski, A., Szymanski, M., Kaluzny, J., Kubiak, M., Mateo, M., & Krzeminski, W. 1997, ApJ, 477, 163CrossRefGoogle Scholar
Udalski, A., Szymański, M., Kałużny, J., Kubiak, M., & Mateo, M. 1992, Acta Astronomica, 42, 253Google Scholar
Udalski, A., et al. 2005, ApJ, 628, L109CrossRefGoogle Scholar