Search for giant planets in M 67. IV. Survey results

  title={Search for giant planets in M 67. IV. Survey results},
  author={Anna Brucalassi and Johannes Koppenhoefer and Roberto P. Saglia and Luca Pasquini and Mar'ia Teresa Ruiz and Piercarlo Bonifacio and Luigi R. Bedin and Mattia Libralato and K. Biazzo and Claudio H. F. Melo and Christophe Lovis and Sofia Randich},
  journal={Astronomy and Astrophysics},
Context. We present the results of a seven-year-long radial velocity survey of a sample of 88 main-sequence and evolved stars to reveal signatures of Jupiter-mass planets in the solar-age and solar-metallicity open cluster M67. Aims. We aim at studying the frequency of giant planets in this cluster with respect to the field stars. In addition, our sample is also ideal to perform a long-term study to compare the chemical composition of stars with and without giant planets in detail. Methods. We… 
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