The Transit Timing and Atmosphere of Hot Jupiter HAT-P-37b

• Published in: arXiv.org 2021-12
• Main Authors: A-thano, Napaporn, Jiang, Ing-Guey, Awiphan, Supachai, Rattanamala, Ronnakrit, Li-Hsin, Su, Hengpiya, Torik, Sariya, Devesh P, Li-Chin, Yeh, Shlyapnikov, A A, Gorbachev, Mark A, Rublevski, Alexey N, Mannaday, Vineet Kumar, Thakur, Parijat, Sahu, D K, Mkrtichian, David, Griv, Evgeny
• Format: Article
• Language: English
• Subjects: Atmospheric models; Extrasolar planets; G stars; Gas giant planets; Light curve; Orbital resonances (celestial mechanics); Orbits; Outliers (statistics); Physical properties; Planetary mass; Spectrum analysis; Transit
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2112.04724

The transit timing variation (TTV) and transmission spectroscopy analyses of the planet HAT-P-37b, which is a hot Jupiter orbiting an G-type star, were performed. Nine new transit light curves are obtained and analysed together with 21 published light curves from the literature. The updated physical parameters of HAT-P-37b are presented. The TTV analyses show a possibility that the system has an additional planet which induced the TTVs amplitude signal of 1.74 \(\pm\) 0.17 minutes. If the body is located near the 1:2 mean motion resonance orbit, the sinusoidal TTV signal could be caused by the gravitational interaction of a sub-Earth mass planet with mass of 0.06 \(M_\oplus\). From the analysis of an upper mass limit for the second planet, the Saturn mass planet with orbital period less than 6 days is excluded. The broad-band transmission spectra of HAT-P-37b favours a cloudy atmospheric model with an outlier spectrum in \(B\)-filter.