2022AJ....163..190F

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.