We report the detection of an exoplanet candidate in orbit around σ Persei from a radial velocity (RV) survey. The system exhibits periodic RV variations of 579.8 ± 2.4 days. The purpose of the survey is to search for low-amplitude and long-period RV variations in giants and examine the origin of the variations using the fiber-fed Bohyunsan Observatory Echelle Spectrograph installed at the 1.8- m telescope of Bohyunsan Optical Astronomy Observatory in Korea. We present high-accuracy RV measurements of σ Per made from December 2003 to January 2014. We argue that the RV variations are not related to the surface inhomogeneities but instead a Keplerian motion of the planetary companion is the most likely explanation. Assuming a stellar mass of 2.25 ± 0.5 M⊙, we obtain a minimum planetary companion mass of 6.5 ± 1.0 MJup, with an orbital semi-major axis of 1.8 ± 0.1 AU, and an eccentricity of 0.3 ± 0.1 around σ Per.

The purpose of this study is to suggest ways to utilize increasing immigrants to Jeju as a growth engine for local development at a time when a low birth rate and becoming an aging society are emerging as serious social problems. For this purpose, we reviewed the current conditions of people' s moving in and out of Jeju Island and analyzed immigrants opinions on settling in Jeju. Based on these reviews and analysis, we suggest ideas of short-term and long-term projects to enhance the satisfactory levels of settlers. Policy of attracting migration to Jeju is very important and also in line with establishing a free international city which Jeju Special Self-governing Province has aimed for. In order to maintain the influx of the population continuously, it is needed to have concrete and lasting pIans which reflect various types, timing and length of migration.