The obliquity and atmosphere of the ultra-hot Jupiter TOI-1431b (MASCARA-5b): A misaligned orbit and no signs of atomic or molecular absorptions
Article
Article Title | The obliquity and atmosphere of the ultra-hot Jupiter TOI-1431b (MASCARA-5b): A misaligned orbit and no signs of atomic or molecular absorptions |
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ERA Journal ID | 1050 |
Article Category | Article |
Authors | Stangret, M. (Author), Palle, E. (Author), Casasayas-Barris, N. (Author), Oshagh, M. (Author), Bello-Arufe, A. (Author), Luque, R. (Author), Nascimbeni, V. (Author), Yan, F. (Author), Orell-Miquel, J. (Author), Sicilia, D. (Author), Malavolta, L. (Author), Addison, B. C. (Author), Buchhave, L. A. (Author), Bonomo, A. S. (Author), Borsa, F. (Author), Cabot, S. H. C. (Author), Cecconi, M. (Author), Fischer, D. A. (Author), Harutyunyan, A. (Author), Mendonca, J. M. (Author), Nowak, G. (Author), Parviainen, H. (Author), Sozzetti, A. (Author) and Tronsgaard, R. (Author) |
Journal Title | Astronomy and Astrophysics: a European journal |
Journal Citation | 654, pp. 1-13 |
Article Number | A73 |
Number of Pages | 13 |
Year | 2021 |
Publisher | EDP Sciences |
Place of Publication | France |
ISSN | 0004-6361 |
1432-0746 | |
Digital Object Identifier (DOI) | https://doi.org/10.1051/0004-6361/202040100 |
Web Address (URL) | https://www.aanda.org/articles/aa/abs/2021/10/aa40100-20/aa40100-20.html |
Abstract | Ultra-hot Jupiters are defined as giant planets with equilibrium temperatures larger than 2000 K. Most of them are found orbiting bright A-F type stars, making them extremely suitable objects to study their atmospheres using high-resolution spectroscopy. Recent studies show a variety of atoms and molecules detected in the atmospheres of this type of planets. Here we present our analysis of the newly discovered ultra-hot Jupiter TOI-1431 b/MASCARA-5 b, using two transit observations with the HARPS-N spectrograph and one transit observation with the EXPRES spectrograph. Analysis of the Rossiter-McLaughlin effect shows that the planet is in a polar orbit, with a projected obliquity λ = −155_−10^+20 degrees. Combining the nights and applying both cross-correlation methods and transmission spectroscopy, we find no evidences of Ca I, Fe I, Fe II, Mg I, Na I, V I, TiO, VO or Hα in the atmosphere of the planet. Our most likely explanation for the lack of atmospheric features is the large surface gravity of the planet. |
Keywords | planets and satellites: individual: TOI-1431b; planets and; satellites: individual: MASCARA-5b; planets and satellites: atmospheres; techniques: spectroscopic; Astrophysics - Earth and Planetary; Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Institute of Astrophysics of the Canary Islands, Spain |
Technical University of Denmark, Denmark | |
Museum of the Astronomical Observatory of Padua, Italy | |
Georg August University of Gottingen, Germany | |
INAF - Catania Astrophysical Observatory, Italy | |
Centre for Astrophysics | |
National Institute for Astrophysics, Italy | |
Brera Astronomical Observatory, Italy | |
Yale University, United States | |
INAF - Astrophysical Observatory of Turin, Italy | |
University of Denmark, Denmark | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6wv2/the-obliquity-and-atmosphere-of-the-ultra-hot-jupiter-toi-1431b-mascara-5b-a-misaligned-orbit-and-no-signs-of-atomic-or-molecular-absorptions
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