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We report the detection of a planetary companion with a minimum mass of m sini = 0.0771 M_Jup = 24.5 M_Earth to the nearby (d = 9.4 pc) M2.5V star GJ 176.The star was observed as part of our M dwarf planet search at the Hobby-EberlyTelescope (HET). The detection is based on 5 years of high-precisiondifferential radial velocity (RV) measurements using theHigh-Resolution-Spectrograph (HRS). The orbital period of the planet is 10.24d. GJ 176 thus joins the small (but increasing) sample of M dwarfs hostingshort-periodic planets with minimum masses in the Neptune-mass range. Low massplanets could be relatively common around M dwarfs and the current detectionsmight represent the tip of a rocky planet population.

An m sin i = 24 Earth Mass Planetary Companion To The Nearby M Dwarf GJ 176