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Titanium oxide and ...
Titanium oxide and chemical inhomogeneity in the atmosphere of the exoplanet WASP-189 b
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- Prinoth, Bibiana (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Hoeijmakers, Jens (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Kitzmann, Daniel (author)
- University of Bern
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- Sandvik, Elin (author)
- Lund University
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- Seidel, Julia V. (author)
- European Southern Observatory Santiago
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- Lendl, Monika (author)
- University of Geneva
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- Borsato, Nicholas (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Thorsbro, Brian (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Anderson, David R. (author)
- University of Warwick
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- Barrado, David (author)
- CSIC Centro de Astrobiologia (INTA)
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- Kravchenko, Kateryna (author)
- Max Planck Institute for Extraterrestrial Physics
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- Allart, Romain (author)
- University of Montreal
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- Bourrier, Vincent (author)
- University of Geneva
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- Cegla, Heather M. (author)
- University of Warwick
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- Ehrenreich, David (author)
- University of Geneva
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- Fisher, Chloe (author)
- University of Bern
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- Lovis, Christophe (author)
- University of Geneva
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- Guzmán-Mesa, Andrea (author)
- University of Bern
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- Grimm, Simon (author)
- University of Bern
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- Hooton, Matthew (author)
- University of Bern
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- Morris, Brett M. (author)
- University of Bern
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- Oreshenko, Maria (author)
- Swiss Federal Institute of Technology
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- Pino, Lorenzo (author)
- INAF - Osservatorio Astrofisico di Arcetri
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- Heng, Kevin (author)
- INAF - Osservatorio Astrofisico di Arcetri
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(creator_code:org_t)
- 2022-01-27
- 2022
- English.
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In: Nature Astronomy. - : Springer Science and Business Media LLC. - 2397-3366. ; 6:4, s. 449-457
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Abstract
Subject headings
Close
- The temperature of an atmosphere decreases with increasing altitude, unless a shortwave absorber that causes a temperature inversion exists. Ozone plays this role in the Earth’s atmosphere. In the atmospheres of highly irradiated exoplanets, the shortwave absorbers are predicted to be titanium oxide (TiO) and vanadium oxide (VO). Detections of TiO and VO have been claimed using both low-, and high- spectral-resolution observations, but subsequent observations have failed to confirm these claims or overturned them. Here we report the unambiguous detection of TiO in the ultra-hot Jupiter WASP-189 b using high-resolution transmission spectroscopy. This detection is based on applying the cross-correlation technique to many spectral lines of TiO from 460 to 690 nm. Moreover, we report detections of metals, including neutral and singly ionized iron and titanium, as well as chromium, magnesium, vanadium and manganese (Fe, Fe+, Ti, Ti+, Cr, Mg, V, Mn). The line positions of the detected species differ, which we interpret as a consequence of spatial gradients in their chemical abundances, such that they exist in different regions or dynamical regimes. This is direct observational evidence for the three-dimensional thermochemical stratification of an exoplanet atmosphere derived from high-resolution ground-based spectroscopy.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Prinoth, Bibiana
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Hoeijmakers, Jen ...
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Kitzmann, Daniel
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Sandvik, Elin
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Seidel, Julia V.
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Lendl, Monika
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show more...
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Borsato, Nichola ...
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Thorsbro, Brian
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Anderson, David ...
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Barrado, David
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Kravchenko, Kate ...
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Allart, Romain
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Bourrier, Vincen ...
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Cegla, Heather M ...
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Ehrenreich, Davi ...
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Fisher, Chloe
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Lovis, Christoph ...
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Guzmán-Mesa, And ...
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Grimm, Simon
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Hooton, Matthew
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Morris, Brett M.
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Oreshenko, Maria
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Pino, Lorenzo
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Heng, Kevin
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show less...
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- NATURAL SCIENCES
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Nature Astronomy
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Lund University