The Hubble PanCET Program: Emission Spectrum of Hot Jupiter HAT-P-41b

Guangwei Fu*, David K. Sing, Drake Deming, Kyle Sheppard, Hannah R Wakeford, Thomas Mikal-Evans, Munazza K. Alam, Leonardo A. Dos Santos, Mercedes López-Morales, Joshua D. Lothringer

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

1 Citation (Scopus)
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Abstract

We present the most complete emission spectrum for inflated hot Jupiter HAT-P-41b combining new Hubble Space Telescope Wide Field Camera/G141 spectrum from the Hubble Panchromatic Comparative Exoplanet Treasury program with archival Spitzer eclipse observations. We found a near blackbody-like emission spectrum, which is best fitted with an isothermal temperature–pressure (TP) profile, that agrees well with the dayside heat redistribution scenario assuming zero Bond albedo. The noninverted TP profile is consistent with the nondetection of near-UV/optical absorbers in the transit spectra. We do not find any evidence for significant H− opacity nor a metal-rich atmosphere. HAT-P-41b is an ideal target that sits in the transitioning parameter space between hot and ultra-hot Jupiters, and future James Webb Space Telescope observations will help us to better constrain the thermal structure and chemical composition.
Original languageEnglish
Article number190
JournalThe Astronomical Journal
Volume163
Issue number4
DOIs
Publication statusPublished - 25 Mar 2022

Bibliographical note

Publisher Copyright:
© 2022. The Author(s). Published by the American Astronomical Society.

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