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
Rodrigo Luger,Rory Barnes +1 more
TL;DR: In this paper, the authors show that terrestrial planets in the habitable zones of M dwarfs older than ∼1 Gyr could have been in runaway greenhouses for several hundred million years following their formation due to the star's extended pre-main sequence phase.
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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
Christoph Mordasini,Christoph Mordasini,R. van Boekel,Paul Mollière,Th. Henning,Björn Benneke +5 more
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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Disequilibrium Carbon, Oxygen, and Nitrogen Chemistry in the Atmospheres of HD 189733b and HD 209458b
Julianne I. Moses,Channon Visscher,Jonathan J. Fortney,Adam P. Showman,Nikole K. Lewis,Caitlin A. Griffith,Stephen J. Klippenstein,Megan Shabram,A. James Friedson,Mark S. Marley,Richard S. Freedman +10 more
TL;DR: In this paper, a 1-D photochemical and thermochemical kinetics and diffusion model was developed for transiting exoplanets HD 189733b and HD 209458b to study the effects of disequilibrium chemistry on the atmospheric composition of hot Jupiters.
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A reappraisal of the habitability of planets around M dwarf stars.
Jill Tarter,Peter Backus,Rocco L. Mancinelli,Jonathan M. Aurnou,Dana E. Backman,Gibor Basri,Alan P. Boss,Andrew Clarke,Drake Deming,Laurance R. Doyle,Eric D. Feigelson,Friedmann Freund,David Grinspoon,Robert M. Haberle,Steven A. Hauck,Martin J. Heath,Todd J. Henry,Jeffery L. Hollingsworth,Manoj Joshi,Steven Kilston,Michael C. Liu,Eric Meikle,I. Neill Reid,Lynn J. Rothschild,John Scalo,Antígona Segura,Carol M. Tang,James M. Tiedje,Margaret C. Turnbull,Lucianne M. Walkowicz,Arthur L. Weber,Richard E. Young +31 more
TL;DR: It is concluded that M dwarf stars may indeed be viable hosts for planets on which the origin and evolution of life can occur and it makes sense to include M dwarfs in programs that seek to find habitable worlds and evidence of life.
Journal ArticleDOI
Roche lobe effects on the atmospheric loss from "Hot Jupiters"
Nikolai V. Erkaev,Yu. N. Kulikov,Helmut Lammer,Franck Selsis,D. Langmayr,G. F. Jaritz,Helfried K. Biernat,Helfried K. Biernat +7 more
TL;DR: In this article, the effect of the Roche lobe on the atmospheric loss from short-periodic gas giants was investigated and reasonably accurate approximate formulas to estimate atmospheric loss enhancement due to the action of tidal forces on a hot Jupiter and to calculate the critical temperature for the onset of geometrical blow-off.
Journal ArticleDOI
Observations of Mass Loss from the Transiting Exoplanet HD 209458b
Jeffrey L. Linsky,Hao Yang,Cynthia S. Froning,James C. Green,John T. Stocke,Steven N. Osterman +5 more
TL;DR: In this paper, the authors used the Cosmic Origins Spectrograph on the Hubble Space Telescope (HST) to obtain moderate-resolution, high signal/noise ultraviolet spectra of HD 209458 and its exoplanet HD 208458b during transit, both orbital quadratures, and secondary eclipse.
Journal ArticleDOI
Physical and chemical aeronomy of HD 209458b
TL;DR: The physical and chemical aeronomy of the hot Jupiter HD 209458b has been investigated in this paper, where the escape and composition of the irradiated atmosphere were modeled by solving the equations of mass, momentum and energy conservation.