Close twin star system reveals a planet
More planets than we thought!
Close twin star system reveals a planet
More planets than we thought!
Everything I need to know I learned through Googling.
Interesting. I really wounldn't have expected to find a planet in a close binary system. But they didn't mention how close the planet was to it's star. A Jupiter size planet probably wouldn't harbor life, but a big moon around it might if the orbit of the planet was the right distance from the star.
According to this site:
http://cfa-www.harvard.edu/planets/gamma-Ceph.html
Minimum mass = 1.76x Jupiter
Semi-major axis: ~ 2.1 AU
Orbital period: 903 ± 6 d.
Eccentricity: 0.2 ± 0.07
The central star is a K1 subgiant with 1.6 times the mass of the Sun and 8.2 times the luminosity. It is approximately 3 billion years old and as a main sequence star it was probably an A7 with a luminosity of 10-11 times that of the Sun.
The error bars on the period of the planet's orbit, and that of the star's orbit, are too large to probably say one way or the other, but I wonder if there is a synchronism between the orbital periods? (like there is between many objects in our solar system).