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HELIOS–RETRIEVAL: An Open-source, Nested Sampling Atmospheric Retrieval Code; Application to the HR 8799 Exoplanets and Inferred Constraints for Planet Formation

  • Authors: Baptiste Lavie, João M. Mendonça, Christoph Mordasini, Matej Malik, Mickaël Bonnefoy, Brice-Olivier Demory, Maria Oreshenko, Simon L. Grimm, David Ehrenreich, and Kevin Heng

2017 The Astronomical Journal 154 91.

  • Provider: AAS Journals

Caption: Figure 10.

Top and middle panels show the retrieved cloud particle radius and composition parameter for the HR 8799b, c, d, and e directly imaged exoplanets, where the flat line is the prior. The bottom panel shows the eddy diffusion coefficient and demonstrates that its inferred value corresponding to the peak value of the posterior distribution for ﹩{r}_{{\rm{c}}}﹩ are not unreasonable and broadly consistent with the assumed ﹩{K}_{\mathrm{zz}}﹩ values in previous studies. PDF stands for “probability density function.”

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