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ACCESS: Tentative Detection of H2O in the Ground-based Optical Transmission Spectrum of the Low-density Hot Saturn HATS-5b

  • Authors: Natalie H. Allen, Néstor Espinoza, Andrés Jordán, Mercedes López-Morales, Dániel Apai, Benjamin V. Rackham, James Kirk, David J. Osip, Ian C. Weaver, Chima McGruder, Kevin Ortiz Ceballos, Henrique Reggiani, Rafael Brahm, Florian Rodler, Nikole K. Lewis, Jonathan Fraine

Natalie H. Allen et al 2022 The Astronomical Journal 164 .

  • Provider: AAS Journals

Caption: Figure 6.

Left: simulated observations of HATS-5b with JWST NIRSpec PRISM based on our best-fit Disequilibrium, No Na, K, Clear model, shown with the Magellan/IMACS results from this paper. Note that the red open circles correspond to binned JWST data, shown for visualization purposes, but that all fitting was carried out for the unbinned data. We label features of interest as well. Right: the change in our posteriors between the Disequilibrium, No Na, K, Clear retrieval (the underlying model fed into the JWST simulations) and the new JWST retrieval, which illustrates the significant improvement in our determination of atmospheric parameters.

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