Showing 2015 · astro-ph.EPShow all

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astro-ph.EP2015★ 224 cited

Detection of an atmosphere around the super-Earth 55 Cancri e

A. Tsiaras, M. Rocchetto, I. P. Waldmann +8

We report the analysis of two new spectroscopic observations of the super-Earth 55 Cancri e, in the near infrared, obtained with the WFC3 camera onboard the HST. 55 Cancri e orbits…

astro-ph.EP2015★ 35 cited

Energy dissipation in magnetic null points at kinetic scales

Vyacheslav Olshevsky, Andrey Divin, Elin Eriksson +2

We use kinetic particle-in-cell and magnetohydrodynamic simulations supported by an observational dataset to investigate magnetic reconnection in clusters of null points in space p…

astro-ph.EP2015★ 92 cited

Connecting the dots II: Phase changes in the climate dynamics of tidally locked terrestrial exoplanets

Ludmila Carone, Rony Keppens, Leen Decin

We investigate 3D atmosphere dynamics for tidally locked terrestrial planets with an Earth-like atmosphere and irradiation for different rotation periods ( days) and…

astro-ph.EP2015★ 2 cited

VUV-absorption cross section of CO2 at high temperatures and impact on exoplanet atmospheres

Olivia Venot, Nicolas Fray, Yves Bénilan +6

Ultraviolet (UV) absorption cross sections are an essential ingredient of photochemical atmosphere models. Exoplanet searches have unveiled a large population of short-period objec…

astro-ph.EP2015★ 34 cited

The EChO science case

Giovanna Tinetti, Pierre Drossart, Paul Eccleston +347

The discovery of almost 2000 exoplanets has revealed an unexpectedly diverse planet population. Observations to date have shown that our Solar System is certainly not representativ…

astro-ph.EP2015★ 30 cited

Analysis of combined radial velocities and activity of BD+20 1790: evidence supporting the existence of a planetary companion

M. Hernán-Obispo, M. Tuomi, M. C. Gálvez-Ortiz +17

This paper presents the simultaneous Bayesian analysis of the radial velocity and activity indices for the K5Ve active star BD+20 1790, that was proposed to host a close-in massive…

astro-ph.EP2015★ 91 cited

New chemical scheme for studying carbon-rich exoplanet atmospheres

Olivia Venot, Eric Hébrard, Marcelino Agúndez +2

Atmospheres with a high C/O ratio are expected to contain an important quantity of hydrocarbons, including heavy molecules (with more than 2 carbon atoms). To study correctly these…

astro-ph.EP2015★ 10 cited

Constraints on the gas content of the Fomalhaut debris belt. Can gas-dust interactions explain the belt's morphology?

G. Cataldi, A. Brandeker, G. Olofsson +5

Context: The 440 Myr old main-sequence A-star Fomalhaut is surrounded by an eccentric debris belt with sharp edges. This sort of a morphology is usually attributed to planetary per…