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Aims. The purpose of the present study is to research the origin of planetarycompanions by using a precise radial velocity (RV) survey.  Methods. The high-resolution spectroscopy of the fiber-fed BohyunsanObservatory Echelle Spectrograph (BOES) at Bohyunsan Optical AstronomyObservatory (BOAO) is used from September 2008 to June 2012.  Results. We report the detection of two exoplanets in orbit around HD 208527and HD 220074 exhibiting periodic variations in RV of 875.5 +/- 5.8 and 672.1+/- 3.7 days. The RV variations are not apparently related to the surfaceinhomogeneities and a Keplerian motion of the planetary companion is the mostlikely explanation. Assuming possible stellar masses of 1.6 +/- 0.4 and 1.2 +/-0.3 M_Sun, we obtain the minimum masses for the exoplanets of 9.9 +/- 1.7 and11.1 +/- 1.8 M_Jup around HD 208527 and HD 220074 with an orbital semi-majoraxis of 2.1 +/- 0.2 and 1.6 +/- 0.1 AU and an eccentricity of 0.08 and 0.14,respectively. We also find that the previously known spectral classification ofHD 208527 and HD 220074 was in error: Our new estimation of stellar parameterssuggest that both HD 208527 and HD 220074 are M giants. Therefore, HD 208527and HD 220074 are so far the first candidate M giants to harbor a planetarycompanion.

Planetary companions orbiting M giants HD 208527 and HD 220074