Detection of a planet in the sdB + M dwarf binary system 2M 1938+4603

摘要: We analyze 37 months of Kepler photometry 2M 1938+4603, a binary system with pulsating hot subdwarf primary and an M-dwarf companion that shows strong reflection effect. measured the eclipse timings from more than 16 000 secondary eclipses discovered periodic variation in timing signal we ascribe to third body system. also significant long-term trend may be evolutionary effect or hint bodies. Upon assumption is orbiting same plane as primary, establish it must Jupiter-mass object period 416 days at distance 0.92 AU. This mass lowest among all tertiary components detected similar systems.