Hi EB

Hmmm... makes me think too. Mind you the HZ for 47 U Maj is about 1.3 AU out, which is rather uncomfortably close to the first planet. And to scale the Earth-equivalent will be at 0.4 AU, which would be rather warm. As Marcy and Butler point out at their site, the inner planets would probably be disrupted from forming by such a near-in Jovian.

Mind you the moons of 47 U Maj B might have methane greenhouses sufficient to keep them warm and interesting? 47 U Maj B is at an insolation equivalent of 1.6 AU, which might give it a rather smoggy look from photochemically processed methane.

The moons might be ideal for terraforming via a flurocarbon greenhouse? And they might mass in bigger than Mars!

Adam