| Abstract
| - We report the detection of three new extrasolar planets orbiting the solar type stars HD 85390, HD 90156 and HD 103197 with the HARPS spectrograph mounted on the ESO 3.6-m telescope at La Silla observatory. HD 85390 has a planetary companion with a projected intermediate mass (42.0 M⊕) on a 788-day orbit ( a = 1.52 AU) with an eccentricity of 0.41, for which there is no analog in the solar system. A drift in the data indicates the presence of another companion on a long-period orbit, which is however not covered by our measurements. HD 90156 is orbited by a warm Neptune analog with a minimum mass of 17.98 M⊕ (1.05 $M_{eptune}$), a period of 49.8 days ( a = 0.25 AU), and an eccentricity of 0.31. HD 103197 has an intermediate-mass planet on a circular orbit ( P = 47.8 d, M sin i = 31.2 M⊕). We discuss the formation of planets of intermediate mass (~30-100 M⊕), which should be rare inside a few AU according to core accretion formation models.
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