HAT-P-13: effect of third companion on interior structure determination

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HAT-P-13: effect of third companion on interior structure determination

Post by Lazarus on 24th September 2013, 5:21 pm

Wasn't sure whether this is more a planetology or a mechanics topic...

Becker & Batygin, Dynamical Measurements of the Interior Structure of Exoplanets
http://arxiv.org/abs/1309.5363

Looks at the question of whether the third companion HAT-P-13 "d" will affect the interior structure determination for the innermost planet. Looks like it won't.

Their figure 5 seems to suggest the third object must lie between about 3 and 30 AU. Using the mass/semimajor axis relationship, I get a range of 0.9 to 90 Jupiter masses.

Lazarus
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