A&A 530, A100 (2011) Astronomy DOI: 10.1051/0004-6361/201016303 & c ESO 2011 Astrophysics Asteroseismic inferences on red giants in open clusters NGC 6791, NGC 6819, and NGC 6811 using Kepler S. Hekker1,2, S. Basu3, D. Stello4, T. Kallinger5, F. Grundahl6,S.Mathur7,R.A.García8, B. Mosser9,D.Huber4, T. R. Bedding4,R.Szabó10, J. De Ridder11,W.J.Chaplin2, Y. Elsworth2,S.J.Hale2, J. Christensen-Dalsgaard6 , R. L. Gilliland12, M. Still13, S. McCauliff14, and E. V. Quintana15 1 Astronomical Institute “Anton Pannekoek”, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands e-mail:
[email protected] 2 School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK 3 Department of Astronomy, Yale University, PO Box 208101, New Haven CT 06520-8101, USA 4 Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006, Australia 5 Department of Physics and Astronomy, University of British Colombia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada 6 Department of Physics and Astronomy, Building 1520, Aarhus University, 8000 Aarhus C, Denmark 7 High Altitude Observatory, NCAR, PO Box 3000, Boulder, CO 80307, USA 8 Laboratoire AIM, CEA/DSM-CNRS, Université Paris 7 Diderot, IRFU/SAp, Centre de Saclay, 91191 Gif-sur-Yvette, France 9 LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon Cedex, France 10 Konkoly Observatory of the Hungarian Academy of Sciences, Konkoly Thege Miklós út 15-17, 1121 Budapest, Hungary 11 Instituut voor Sterrenkunde, K.U. Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium 12 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA 13 Bay Area Environmental Research Institute/Nasa Ames Research Center, Moffett Field, CA 94035, USA 14 Orbital Sciences Corporation/Nasa Ames Research Center, Moffett Field, CA 94035, USA 15 SETI Institute/Nasa Ames Research Center, Moffett Field, CA 94035, USA Received 13 December 2010 / Accepted 19 April 2011 ABSTRACT Context.