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The Asymmetric Limbs of HD 209458 b Observed with JWST NIRCam F322W2/F444W

  • Authors: Cathal Maguire, Eva-Maria Ahrer, Charlotte Fairman, Hannah R. Wakeford, Duncan A. Christie, James Kirk, Elspeth K.H. Lee, Evert Nasedkin, Michael Radica

Cathal Maguire et al 2026 The Astrophysical Journal Letters 1010 .

  • Provider: AAS Journals

Caption: Figure 2.

The morning (left) and evening (right) transmission spectra obtained for each of our light-curve-fitting routines (detailed in Sections 3.1 and 3.2). The light curves were reduced with Eureka! (see Section 2.1.1). The transit depths obtained from the Harmonica fit are shown as unfilled diamonds, whereas the transit depths obtained from the catwoman fit are shown as filled squares. Horizontal black arrows highlight the wavelength coverage of the NIRCam F322W2 and F444W filters. The best-fit offset value from our 1.5D fiducial free-chemistry atmospheric retrieval has been applied to the F444W values for clarity.

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