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I have a star system of large red dwarf around 50% of sun's mass, which has gas giant or ice giant orbiting in the habitable zone. The gas(ice) giant has terrestrial like moon which is habitable. That means that humans could live on it without technology.
Is my system possible?
I'm not attached to anything about the mass of the gas giant from Neptune to larger then Jupiter. Nor about the the type of the terrestrial planet as long as it's surface gravity is similar to Earth's.