The space weather around the exoplanet GJ 436b ...
The space environment in which planets are embedded depends mainly on the host star and impacts the evolution of the planetary atmosphere. The quiet M dwarf GJ 436 hosts a close-in hot Neptune which is known to feature a comet-like tail of hydrogen atoms escaped from its atmosphere due to energetic...
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ftdatacite:10.48550/arxiv.2306.15391 2023-10-01T04:00:10+02:00 The space weather around the exoplanet GJ 436b ... Bellotti, S. Fares, R. Vidotto, A. A. Morin, J. Petit, P. Hussain, G. A. J. Bourrier, V. Donati, J. F. Moutou, C. Hebrard, E. 2023 https://dx.doi.org/10.48550/arxiv.2306.15391 https://arxiv.org/abs/2306.15391 unknown arXiv https://dx.doi.org/10.1051/0004-6361/202346675 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Solar and Stellar Astrophysics astro-ph.SR Earth and Planetary Astrophysics astro-ph.EP Space Physics physics.space-ph FOS Physical sciences ScholarlyArticle Article article-journal Text 2023 ftdatacite https://doi.org/10.48550/arxiv.2306.1539110.1051/0004-6361/202346675 2023-09-04T14:56:22Z The space environment in which planets are embedded depends mainly on the host star and impacts the evolution of the planetary atmosphere. The quiet M dwarf GJ 436 hosts a close-in hot Neptune which is known to feature a comet-like tail of hydrogen atoms escaped from its atmosphere due to energetic stellar irradiation. Understanding such star-planet interactions is essential to shed more light on planet formation and evolution theories, in particular the scarcity of Neptune-size planets below 3 d orbital period, also known as ``Neptune desert''. We aimed at characterising the stellar environment around GJ 436, which requires an accurate knowledge of the stellar magnetic field. The latter is studied efficiently with spectropolarimetry, since it is possible to recover the geometry of the large-scale magnetic field by applying tomographic inversion on time series of circularly polarised spectra. We used spectropolarimetric data collected in the optical domain with Narval in 2016 to compute the longitudinal ... : 9 pages, 8 figures, 3 tables ... Text narval narval DataCite Metadata Store (German National Library of Science and Technology) |
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Solar and Stellar Astrophysics astro-ph.SR Earth and Planetary Astrophysics astro-ph.EP Space Physics physics.space-ph FOS Physical sciences |
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Solar and Stellar Astrophysics astro-ph.SR Earth and Planetary Astrophysics astro-ph.EP Space Physics physics.space-ph FOS Physical sciences Bellotti, S. Fares, R. Vidotto, A. A. Morin, J. Petit, P. Hussain, G. A. J. Bourrier, V. Donati, J. F. Moutou, C. Hebrard, E. The space weather around the exoplanet GJ 436b ... |
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Solar and Stellar Astrophysics astro-ph.SR Earth and Planetary Astrophysics astro-ph.EP Space Physics physics.space-ph FOS Physical sciences |
description |
The space environment in which planets are embedded depends mainly on the host star and impacts the evolution of the planetary atmosphere. The quiet M dwarf GJ 436 hosts a close-in hot Neptune which is known to feature a comet-like tail of hydrogen atoms escaped from its atmosphere due to energetic stellar irradiation. Understanding such star-planet interactions is essential to shed more light on planet formation and evolution theories, in particular the scarcity of Neptune-size planets below 3 d orbital period, also known as ``Neptune desert''. We aimed at characterising the stellar environment around GJ 436, which requires an accurate knowledge of the stellar magnetic field. The latter is studied efficiently with spectropolarimetry, since it is possible to recover the geometry of the large-scale magnetic field by applying tomographic inversion on time series of circularly polarised spectra. We used spectropolarimetric data collected in the optical domain with Narval in 2016 to compute the longitudinal ... : 9 pages, 8 figures, 3 tables ... |
format |
Text |
author |
Bellotti, S. Fares, R. Vidotto, A. A. Morin, J. Petit, P. Hussain, G. A. J. Bourrier, V. Donati, J. F. Moutou, C. Hebrard, E. |
author_facet |
Bellotti, S. Fares, R. Vidotto, A. A. Morin, J. Petit, P. Hussain, G. A. J. Bourrier, V. Donati, J. F. Moutou, C. Hebrard, E. |
author_sort |
Bellotti, S. |
title |
The space weather around the exoplanet GJ 436b ... |
title_short |
The space weather around the exoplanet GJ 436b ... |
title_full |
The space weather around the exoplanet GJ 436b ... |
title_fullStr |
The space weather around the exoplanet GJ 436b ... |
title_full_unstemmed |
The space weather around the exoplanet GJ 436b ... |
title_sort |
space weather around the exoplanet gj 436b ... |
publisher |
arXiv |
publishDate |
2023 |
url |
https://dx.doi.org/10.48550/arxiv.2306.15391 https://arxiv.org/abs/2306.15391 |
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narval narval |
genre_facet |
narval narval |
op_relation |
https://dx.doi.org/10.1051/0004-6361/202346675 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.48550/arxiv.2306.1539110.1051/0004-6361/202346675 |
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1778534969177538560 |