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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 5.

Further results from the retrievals on the mock data set. The top panel shows the mock data set at full resolution (0.01 μm), and also with HR 8799b-like data coverage (circles). The mock data set and best-fit spectrum overlap exactly (to within the resolution of the plot). The insert shows the retrieved temperature–pressure profile. The bottom panel shows the retrieved posterior distributions of C/O, assuming different models (see Table 1). The solid and dotted curves are for HR 8799b-like and HR 8799e-like data coverage. The broader posterior distributions of C/O associated with HR 8799e-like data coverage are primarily due to the lack of K-band data.

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