Evidence of energy-, recombination-, and photon-limited escape regimes in giant planet H/He atmospheres
| Autor: | Pedro J. Amado, Manuel López-Puertas, Luisa Lara, Jose A. Caballero, Enric Palle, M. Salz, Jorge Sanz-Forcada, Ignasi Ribas, Th. Henning, Ansgar Reiners, Lisa Nortmann, Andreas Quirrenbach, D. Montes, M. Lampón, S. Czesla, A. Sánchez-López, Karan Molaverdikhani |
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| Přispěvatelé: | European Commission, European Research Council, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737, Centro de Excelencia Científica Severo Ochoa Instituto de Astrofísica de Andalucía , SEV-2017-0709, Centro de Excelencia Científica Severo Ochoa Instituto de Astrofísica de Canarias, SEV-2015-0548, Lampón, M. [0000-0002-0183-7158], López Puertas, M. [0000-0003-2941-7734], Sánchez López, A. [0000-0002-0516-7956], Lara, L. M. [0000-0002-7184-920X], Sanz Forcada, J. [0000-0002-1600-7835], Molaverdikhani, K. [0000-0002-0502-0428], Caballero, J. A. [0000-0002-7349-1387], Nortmann, L. [0000-0001-8419-8760], Amado, P. J. [0000-0001-8012-3788], Montes, D. [0000-0002-7779-238X], Ribas, I. [0000-0002-6689-0312], Consejo Superior de Investigaciones Científicas (CSIC), Junta de Andalucía, European Regional Development Fund (ERDF), Deutsche Forschungsgemeinschaft (DFG), Agencia Estatal de Investigación (AEI), Ministerio de Economía y Competitividad (MINECO), Generalitat de Catalunya, European Research Council (ERC) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Astrofísica
010504 meteorology & atmospheric sciences FOS: Physical sciences chemistry.chemical_element Astrophysics 7. Clean energy 01 natural sciences 0103 physical sciences Planets and satellites: atmospheres Absorption (electromagnetic radiation) Planets and satellites: individual: GJ 3470 b 010303 astronomy & astrophysics Helium 0105 earth and related environmental sciences Hydrodynamic escape Earth and Planetary Astrophysics (astro-ph.EP) Physics Advection individual: HD 209458 b [Planets and satellites] individual: HD 189733 b [Planets and satellites] Giant planet Astronomy and Astrophysics Planets and satellites: individual: HD 189733 b Exoplanet Planets and satellites: gaseous planets Planets and satellites: individual: HD 209458 b Astronomía gaseous planets [Planets and satellites] chemistry individual: GJ 3470 b [Planets and satellites] 13. Climate action Space and Planetary Science atmospheres [Planets and satellites] Planetary mass Recombination Astrophysics - Earth and Planetary Astrophysics |
| Zdroj: | E-Prints Complutense. Archivo Institucional de la UCM instname Astronomy & Astrophysics, 648, 1-9 Digital.CSIC: Repositorio Institucional del CSIC Consejo Superior de Investigaciones Científicas (CSIC) E-Prints Complutense: Archivo Institucional de la UCM Universidad Complutense de Madrid DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial Astronomy & Astrophysics Manuel López-Puertas Digital.CSIC. Repositorio Institucional del CSIC |
| Popis: | Hydrodynamic escape is the most efficient atmospheric mechanism of planetary mass loss and has a large impact on planetary evolution. Three hydrodynamic escape regimes have been identified theoretically: energy-limited, recombination-limited, and photon-limited. However, no evidence of these regimes had been reported until now. Here, we report evidence of these three regimes via an analysis of a helium I triplet at 10 830 Å and Lyα absorption involving a 1D hydrodynamic model that allows us to estimate hydrogen recombination and advection rates. In particular, we show that HD 209458 b is in the energy-limited regime, HD 189733 b is in the recombination-limited regime, and GJ 3470 b is in the photon-limited regime. These exoplanets can be considered as benchmark cases for their respective regimes. © ESO 2021. CARMENES is an instrument for the Centro Astronomico Hispano-Aleman (CAHA) at Calar Alto (Almeria, Spain), operated jointly by the Junta de Andalucia and the Instituto de Astrofisica de Andalucia (CSIC). CARMENES was funded by the Max-Planck-Gesellschaft (MPG), the Consejo Superior de Investigaciones Cientificas (CSIC), the Ministerio de Economia y Competitividad (MINECO) and the European Regional Development Fund (ERDF) through projects FICTS-2011-02, ICTS-2017-07-CAHA-4, and CAHA16-CE-3978, and the members of the CARMENES Consortium (Max-Planck-Institut fur Astronomie, Instituto de Astrofisica de Andalucia, Landessternwarte Konigstuhl, Institut de Ciencies de l'Espai, Institut fur Astrophysik Gottingen, Universidad Complutense de Madrid, Thuringer Landessternwarte Tautenburg, Instituto de Astrofisica de Canarias, Hamburger Sternwarte, Centro de Astrobiologia and Centro Astronomico Hispano-Aleman), with additional contributions by the MINECO, the Deutsche Forschungsgemeinschaft through the Major Research Instrumentation Programme and Research Unit FOR2544 "Blue Planets around Red Stars", the Klaus Tschira Stiftung, the states of Baden-Wurttemberg and Niedersachsen, and by the Junta de Andalucia. We acknowledge financial support from the Agencia Estatal de Investigacion of the Ministerio de Ciencia, Innovacion y Universidades and the ERDF through projects ESP2016-76076-R, ESP2017-87143-R, BES-2015-074542, PID2019-110689RB-I00/AEI/10.13039/501100011033, PGC2018-099425-B-I00, PID2019-109522GB-C51/2/3/4, PGC2018-098153-B-C33, AYA2016-79425-C3-1/2/3-P, ESP2016-80435-C2-1-R, and the Centre of Excellence "Severo Ochoa" and "Maria de Maeztu" awards to the Instituto de Astrofisica de Canarias (SEV-2015-0548), Instituto de Astrofisica de Andalucia (SEV-2017-0709), and Centro de Astrobiologia (MDM-2017-0737), and the Generalitat de Catalunya/CERCA programme. T.H. acknowledges support from the European Research Council under the Horizon 2020 Framework Program via the ERC Advanced Grant Origins 832428. A.S.L. acknowledges funding from the European Research Council under the European Union's Horizon 2020 research and innovation program under grant agreement No 694513. |
| Databáze: | OpenAIRE |
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