Improved stellar parameters of CoRoT-7 A star hosting two super Earths

  title={Improved stellar parameters of CoRoT-7 A star hosting two super Earths},
  author={Hans Bruntt and Magali Deleuil and Malcolm Fridlund and Roi Alonso and François Bouchy and A. P. Hatzes and Michel Mayor and Claire Moutou and Didier Queloz},
  journal={Astronomy and Astrophysics},
Context. Accurate parameters of the host stars of exoplanets are needed for interpreting the new planetary systems. The CoRoT satellite recently discovered a transiting rocky planet with a density similar to the inner planets in our solar system, a so-called super Earth. The mass was determined using ground-based follow-up spectroscopy, which also revealed a second, non-transiting super Earth. Aims. These planets are orbiting a relatively faint (m(V) = 11.7) G9V star called CoRoT-7. We wish to… 

The corona and companion of CoRoT-2a. Insights from X-rays and optical spectroscopy

CoRoT-2 is one of the most unusual planetary systems known to date. Its host star is exceptionally active, showing a pronounced, regular pattern of optical variability caused by magnetic activity.

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I calculate the physical properties of 32 transiting extrasolar planet and brown-dwarf systems from existing photometric observations and measured spectroscopic parameters. The systems studied

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Abstract Since the discovery of the transiting Super-Earth CoRoT-7b, several investigations have been made of the number and precise masses of planets present in the system, but they all yield

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High-energy irradiation of exoplanets has been identified to be a key influence on the stability of these planets’ atmospheres. So far, irradiation-driven mass-loss has been observed only in two Hot

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Context. The small radius and high density of CoRoT-7b implies that this transiting planet belongs to a different species than all transiting planets previously found. Current models suggest that

Application to Observations of Planet-Hosting Stars

In this chapter, I present the work I have done towards characterising three planetary systems: CoRoT-7, Kepler-78 and Kepler-10. CoRoT-7 is an active star host to a small hot Neptune and the first

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Modeling the interior of exoplanets is essential to go further than the conclusions provided by mean density measurements. In addition to the still limited precision on the planets’ fundamental



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The CoRoT satellite exoplanetary team announces its sixth transiting planet in this paper. We describe and discuss the satellite observations as well as the complementary ground-based observations ‐

Accurate fundamental parameters of CoRoT asteroseismic targets - The solar-like stars HD 49933, HD 175726, HD 181420, and HD 181906

Context. The CoRoT satellite has provided high-quality light curves of several solar-like stars. Analysis of these light curves provides oscillation frequencies that make it possible to probe the

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Aims. We report the discovery as well as the orbital and physical characterizations of two new transiting giant exoplanets, CoRoT-30 b and CoRoT-31 b, with the CoRoT space telescope. Methods. We

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One of the goals of the ground-based support program for the  and / satellite missions is to charac- terize suitable target stars for the part of the missions dedicated to


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Context. The CoRoT  space mission routinely provides high-precision photometric measurements of thousands of stars that have been continuously observed for months. Aims. The discovery and


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