The escape of heavy atoms from the ionosphere of HD209458b. I. A photochemical–dynamical model of the thermosphere
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In this paper, the authors present a hydrodynamic escape model for the upper atmosphere that includes all of the detected species in order to explain their presence at high altitudes, and to further constrain the temperature and velocity profiles.About:
This article is published in Icarus.The article was published on 2013-11-01 and is currently open access. It has received 263 citations till now. The article focuses on the topics: Hydrodynamic escape & Atmosphere.read more
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The PLATO 2.0 mission
Heike Rauer,Heike Rauer,C. Catala,Conny Aerts,Thierry Appourchaux,Willy Benz,Alexis Brandeker,Jørgen Christensen-Dalsgaard,Magali Deleuil,Laurent Gizon,Laurent Gizon,M. J. Goupil,Manuel Güdel,Eduardo Janot-Pacheco,M. Mas-Hesse,Isabella Pagano,Giampaolo Piotto,Don Pollacco,Ċ. Santos,Andrew Smith,Juan Carlos Suárez,Róbert Szabó,Stéphane Udry,V. Adibekyan,Yann Alibert,J. M. Almenara,Pau Amaro-Seoane,M. Ammler-von Eiff,Martin Asplund,E. Antonello,Sydney A. Barnes,Frédéric Baudin,K. Belkacem,Maria Bergemann,G. Bihain,Aaron C. Birch,Xavier Bonfils,Isabelle Boisse,Aldo S. Bonomo,Francesco Borsa,I. M. Brandão,Enzo Brocato,S. Brun,Matthew R. Burleigh,R. Burston,Juan Cabrera,Santi Cassisi,William J. Chaplin,Stéphane Charpinet,Cristina Chiappini,Ross P. Church,Sz. Csizmadia,Margarida S. Cunha,Mario Damasso,Mario Damasso,Melvyn B. Davies,Hans J. Deeg,Rodrigo F. Díaz,Stefan Dreizler,C. Dreyer,C. Dreyer,P. Eggenberger,David Ehrenreich,Philipp Eigmüller,Anders Erikson,Robert Farmer,Sofia Feltzing,F. De Oliveira Fialho,Pedro Figueira,T. Forveille,Malcolm Fridlund,Rafael A. García,Paolo Giommi,G. Giuffrida,G. Giuffrida,M. Godolt,J. Gomes da Silva,T. Granzer,John Lee Grenfell,A. Grotsch-Noels,E. Günther,Carole A. Haswell,A. P. Hatzes,Guillaume Hébrard,Saskia Hekker,Saskia Hekker,Ravit Helled,Kevin Heng,Jon M. Jenkins,Anders Johansen,Maxim L. Khodachenko,Kristina G. Kislyakova,Wilhelm Kley,Ulrich Kolb,Natalie A. Krivova,Friedrich Kupka,Helmut Lammer,Antonino F. Lanza,Yveline Lebreton,Demetrio Magrin,P. Marcos-Arenal,P. M. Marrese,P. M. Marrese,J. P. Marques,J. H. C. Martins,S. Mathis,Savita Mathur,S. Messina,Andrea Miglio,Josefina Montalbán,M. Montalto,Mário J. P. F. G. Monteiro,Hamed Moradi,Ehsan Moravveji,Christoph Mordasini,Thierry Morel,Annelies Mortier,Valerio Nascimbeni,Richard P. Nelson,Martin Bo Nielsen,Lena Noack,Andrew Norton,Aviv Ofir,Mahmoudreza Oshagh,R.-M. Ouazzani,Péter Pápics,V. C. Parro,Pascal Petit,Bertrand Plez,Ennio Poretti,Andreas Quirrenbach,Roberto Ragazzoni,Giuliano Raimondo,Monica Rainer,Daniel R. Reese,Ronald Redmer,Sabine Reffert,Bárbara Rojas-Ayala,Ian W. Roxburgh,Stéphanie Salmon,Alexandre Santerne,Jean Schneider,Jesper Schou,Sonja Schuh,Hannah Schunker,A. Silva-Valio,Roberto Silvotti,I. Skillen,Ignas Snellen,Frank Sohl,S. G. Sousa,Alessandro Sozzetti,Dennis Stello,Klaus G. Strassmeier,Michal Švanda,Gy. M. Szabó,Gy. M. Szabó,Andrew Tkachenko,Diana Valencia,Valérie Van Grootel,Sylvie Vauclair,Paolo Ventura,F. W. Wagner,N. A. Walton,Joerg Weingrill,Stephanie C. Werner,Peter J. Wheatley,Konstanze Zwintz +167 more
TL;DR: The PLATO 2.0 mission as discussed by the authors has been selected for ESA's M3 launch opportunity (2022/24) to provide accurate key planet parameters (radius, mass, density and age) in statistical numbers.
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Extreme Water Loss and Abiotic O2 Buildup on Planets Throughout the Habitable Zones of M Dwarfs
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Spectrally resolved detection of sodium in the atmosphere of HD 189733b with the HARPS spectrograph
TL;DR: In this article, the authors obtained a high-resolution transit spectrum of HD 189733b in the region around the resonance doublet of Nai at 589 nm, to characterize the absorption signature that was previously detected from space at low resolution.
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The imprint of exoplanet formation history on observable present-day spectra of hot Jupiters
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TL;DR: In this article, a chain of models, linking the formation of a planet to its observable present-day spectrum, is presented, including the planet's formation and migration, its long-term thermodynamic evolution, a variety of disk chemistry models, a non-gray atmospheric model, and a radiometric model to obtain simulated spectroscopic observations with James Webb Space Telescope and ARIEL.
References
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Spectral, Spatial, and Time properties of the hydrogen nebula around exoplanet HD209458b
TL;DR: In this paper, a sensitivity study of observed time and spectral variations of the stellar flux was performed and it was shown that the sensitivity of the absorption depth during transit to the assumed spectral range in the stellar line profile is very weak, leading to a transit depth in the range $(8.4-8.9)%\pm 2.0%$ for all possible wavelength ranges.
Journal ArticleDOI
A scenario of planet erosion by coronal radiation
Jorge Sanz-Forcada,Ignasi Ribas,Giuseppina Micela,A. M. T. Pollock,D. Garcia-Alvarez,Enrique Solano,Carlos Eiroa +6 more
TL;DR: In this article, the authors analyzed the current distribution of planetary mass with X-ray irradiation of the atmospheres to make an observational assessment of the consequences of erosion by coronal radiation.
Journal ArticleDOI
SPECTRAL, SPATIAL, AND TIME PROPERTIES OF THE HYDROGEN NEBULA AROUND EXOPLANET HD 209458b
TL;DR: In this paper, a sensitivity study of observed time and spectral variations of the stellar flux was performed and the authors showed that the sensitivity of the absorption depth during transit to the assumed spectral range in the stellar line profile is very weak, leading to a transit depth in the range (8.4% −8.9%) ± 2.0% for all possible wavelength ranges, and thereby confirming the initially reported absorption rate.
Journal ArticleDOI
Magnetospheric Emissions from the Planet Orbiting τ Bootis: A Multiepoch Search
TL;DR: In this paper, a likelihood method was developed for multiepoch observations and used it to constrain various radiation properties of the planet, assuming that the planet does not radiate at our observation wavelength, its typical luminosity must be less than about 1016 W, unless its radiation is highly beamed into a solid angle of Ω 1 sr.
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The upper atmosphere of the exoplanet HD 209458 b revealed by the sodium D lines: Temperature-pressure profile, ionization layer, and thermosphere
Alfred Vidal-Madjar,David K. Sing,A. Lecavelier des Etangs,Roger Ferlet,Jean-Michel Desert,Guillaume Hébrard,Isabelle Boisse,David Ehrenreich,C. Moutou +8 more
TL;DR: In this article, the authors analyzed the profile in the deep core of the NaI doublet line from HST and high-resolution ground-based spectra to further constrain the vertical structure of the HD 209458 b atmosphere.