Investigation of Transit Timing and an Optical Transmission Spectrum of the Hot Jupiter WASP-11 b
Year: 2026
Type: article
Abstract: WASP-11 b/HAT-P-10 b is an inflated hot Jupiter, which has a low density that makes it a good target for atmospheric studies using the transmission spectroscopy technique. In this work, we present 31 new transit light curves of WASP-11 b/HAT-P-10 b, obtained through the Spectroscopy and Photometry of Exoplanet Atmospheres Research Network. These data were analyzed along with previously published ground-based observations and space-based data from TESS . We refine the planetary parameters of WASP-11 b/HAT-P-10 b and perform a transit timing analysis using data spanning 16 yr. The updated ( O − C ) diagram shows no significant evidence of orbital decay. Transit-timing variation analysis reveals no significant signals indicative of additional planets. Atmospheric analysis using multiband optical observations indicates a strong Rayleigh scattering slope in the transmission spectra, which may originate from the planetary atmosphere itself or be influenced by contamination such as stellar activity or light from the companion star.
Source: The Astronomical Journal
Authors: Napaporn A-thano, Supachai Awiphan, Eamonn Kerins, Akshay Priyadarshi, Iain McDonald, Orarik Tasuya, Ronnakrit Rattanamala, Ing-Guey Jiang, Yogesh C. Joshi, Fan Yang, Ida Janiak, Patcharawee Munsaket, Yasir Abdul Qadir, Smanchan Chandaiam, Boonyarit Choonhakit, Suwanit Wutsang, Boonrucksar Soonthornthum, Vik S Dhillon
Institutions: National Astronomical Research Institute of Thailand, University of Manchester, The Open University, Nakhon Ratchasima Rajabhat University, National Tsing Hua University, Aryabhatta Research Institute of Observational Sciences, Centre National de la Recherche Scientifique, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Université Paris-Saclay, Astrophysique, Instrumentation et Modélisation, Institut de Recherche sur les Lois Fondamentales de l'Univers, Suranaree University of Technology, University of Turku, Instituto de Astrofísica de Canarias, University of Sheffield
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,499
OpenAlex ID: W7160614334