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The Watery Atmosphere of HD 209458 b Revealed by Joint K- and L-band High-resolution Spectroscopy

  • Authors: Luke Finnerty, Julie Inglis, Michael P. Fitzgerald, Daniel Echeverri, Nemanja Jovanovic, Dimitri Mawet, Geoffrey A. Blake, Ashley Baker, Randall Bartos, Benjamin Calvin, Sylvain Cetre, Jacques-Robert Delorme, Greg Doppmann, Katelyn Horstman, Chih-Chun Hsu, Joshua Liberman, Ronald A. López, Evan Morris, Jacklyn Pezzato-Rovner, Jean-Baptiste Ruffio, Ben Sappey, Tobias Schofield, Andrew Skemer, J. Kent Wallace, Nicole L. Wallack, Jason J Wang, 王劲飞, Ji Wang, 王吉, Yinzi Xin, Jerry W. Xuan

Luke Finnerty et al 2025 The Astronomical Journal 170 .

  • Provider: AAS Journals

Caption: Figure 5.

Full corner plot comparing the four-component joint retrieval with the results from each band separately. While the L band is consistent with the results from the six-component joint retrieval, the K band prefers a carbon-rich composition, and dominates the joint fit. Comparison with the L band and six- and eight-component cases indicates that this mode is a result of residuals in the K-band time series when omitting four PCs.

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