Who expected this?!!!: Binary stars with planets have more iron than single stars with planets! This one is a little harder to explain than the last correlation I found in 2012: The iron abundance of stars with planets is correlated with orbital eccentricity, in a manner depending on the orbital period (See 2012 September 5 post at http://astrostuart.blogspot.hk/2012/09/planet-flow-versus-low-tidal-friction.html.)
I am seeking collaborators on this new paper which I am now passing around for comments from colleagues in final preparation for submission.
