In-Situ Formation of Close-In Super-Earths

by Giangore on Sun Nov 11, 2012 9:18 am

An interesting article about the formation of close in super-earths without using the migration model.

Here the paper: http://arxiv.org/abs/1211.1673

by jyril on Sun Nov 11, 2012 1:37 pm

More at the systemic blog, interesting read. I wonder how likely the formation of HZ planets is if this model is correct.

by Lazarus on Sun Nov 11, 2012 4:21 pm

Could it be that the huge population of super-Earths formed right where they are observed? If that’s the case, it makes life simpler, and it implies that the template we’re after is the Minimum Mass Extrasolar Nebula (MMEN), which can be defined by grinding up the planets that have been observed by Kepler, and which is not all that different from what one gets if one simply takes the MMSN and runs it all the way into the dust sublimation boundary at ~0.05 AU.

Leads to the question of how to get from the MMEN to the MMSN - if the main difference is the region between ~0.05 AU and ~0.5 AU was cleared out in our solar system what is the reason for that happening?

by Lazarus on Fri Feb 01, 2013 5:30 pm

Testing In Situ Assembly with the Kepler Planet Candidate Sample
http://arxiv.org/abs/1301.7431

Matches the relative frequencies of multiples pretty well but seems to underpredict the number of single-transit systems... post-formation dynamics perhaps?

In-Situ Formation of Close-In Super-Earths

In-Situ Formation of Close-In Super-Earths

Re: In-Situ Formation of Close-In Super-Earths

Re: In-Situ Formation of Close-In Super-Earths

Re: In-Situ Formation of Close-In Super-Earths