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We present the results of a seven-year-long radial velocity survey of asample of 88 main-sequence and evolved stars to reveal signatures ofJupiter-mass planets in the solar-age and solar-metallicity open cluster M67.We aim at studying the frequency of giant planets in this cluster with respectto the field stars. In addition, our sample is also ideal to perform along-term study to compare the chemical composition of stars with and withoutgiant planets in detail. We analyzed precise radial velocity (RV) measurementsobtained with five different instruments. We conducted Monte Carlo simulationsto estimate the occurrence rate of giant planets in our radial velocity survey.All the planets previously announced in this RV campaign with their propertiesare summarized here: 3 hot Jupiters around the main-sequence stars YBP1194,YBP1514, and YBP401, and 1 giant planet around the evolved star S364. Twoadditional planet candidates around the stars YBP778 and S978 are also analyzedin the present work. We discuss stars that exhibit large RV variability ortrends individually. For 2 additional stars, long-term trends are compatiblewith new binary candidates or substellar objects, which increases the totalnumber of binary candidates detected in our campaign to 14. Based on theDoppler-detected planets discovered in this survey, we find an occurrence ofgiant planets of ~18.0%(+12.0/-8.0%) in the selected period-mass range. Thisfrequency is slightly higher but consistent within the errors with the estimatefor the field stars, which leads to the general conclusion that open clusterand field statistics agree. However, we find that the rate of hot Jupiters inthe cluster (~5.7%(+5.5/-3.0%)) is substantially higher than in the field.

Search for giant planets in M67 IV: survey results