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Magnesium Silicate Clouds in the Atmosphere of HD 209458b from a Rule-based Tree-structured Data Reduction

  • Authors: Katy L. Chubb, David Grant, Hannah R. Wakeford, Sarah E. Moran, Natasha E. Batalha, Arika Egan, Charlotte Fairman, Diana Powell, Kevin B. Stevenson, Lili Alderson, Peter Gao, Tiffany Kataria, Nikole K. Lewis, Ryan J. MacDonald, Mark Marley, Elijah Mullens, David K. Sing, Jeff A. Valenti

Katy L. Chubb et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 1.

Broadband light curve obtained by binning our 5–12 μm MIRI/LRS data. The start of the data is trimmed, leaving a long and stable pretransit baseline with minimal systematics. The best-fit transit model is shown in orange, where the dashed line represents an extrapolation of this model and depicts the missed transit information due to erroneous observation timing due to an incorrect orbital ephemeris. Inset panel: a zoom-in of the ingress data with the same axis labels as the main figure.

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