The characterization of exoplanets relies on that of their host star. However, stellar evolution models cannot always be used to derive the mass and radius of individual stars, because many stellar internal parameters are poorly constrained. Here, we use the probability density functions (PDF) of directly measured parameters to derive the joint...
-
July 2, 2018 (v1)Conference paperUploaded on: December 4, 2022
-
July 2014 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
January 20, 2014 (v1)Journal article
We describe the data flow in the operation of the VEGA/CHARA instrument. After a brief summary of the main characteristics and scientific objectives of the VEGA instrument, we explain the standard procedure from the scientific idea up to the execution of the observation. Then, we describe the different steps done after the observation, from the...
Uploaded on: December 3, 2022 -
February 2015 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
May 14, 2019 (v1)Conference paper
Exoplanets' properties are directly linked to that of their host star. This is even more true in the case of transiting exoplanets, where the planetary radius cannot be derived if the stellar radius is unknown. Interferometry seems the best technique in this context, as it provides in a quasi-direct way and with exquisite precision the stellar...
Uploaded on: December 4, 2022 -
December 2016 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
February 2016 (v1)Journal article
Context. Accurate stellar parameters are needed in numerous domains of astrophysics. The position of stars on the Hertzsprung-Russell diagram is an important indication of their structure and evolution, and it helps improve stellar models. Furthermore, the age and mass of stars hosting planets are required elements for studying exoplanetary...
Uploaded on: February 28, 2023 -
November 2019 (v1)Journal article
Context. The harvest of exoplanet discoveries has opened the area of exoplanet characterisation. But this cannot be achieved without a careful analysis of the host star parameters. Aims: The system of HD 219134 hosts two transiting exoplanets and at least two additional non-transiting exoplanets. We revisit the properties of this system using...
Uploaded on: December 4, 2022 -
2012 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
2012 (v1)Journal article
International audience
Uploaded on: December 3, 2022