ExoplANETS-A: A virtual observatory database for host stars and planetary systems
Astronomy and Astrophysics, vol. 688, pp. A45
Abstract
Context. ExoplANETS-A is an EU Horizon-2020 project with the primary objective of establishing new knowledge on exoplanet atmospheres. Intimately related to this topic is the study of the host stars’ radiative properties in order to understand the environment in which exoplanets lie. Aims. The aim of this work is to exploit archived data from space-based observatories and other public sources to produce uniform sets of stellar data that can establish new insight into the influence of the host star on the planetary atmosphere. We have compiled X-ray and UV luminosities, which affect the formation and the atmospheric properties of the planets, and stellar parameters, which impact the retrieval process of the planetary atmosphere’s properties and its errors. Methods. Our sample is formed of all transiting-exoplanet systems observed by HST or Spitzer. It includes 205 exoplanets and their 114 host stars. We have built a catalogue with information extracted from public, online archives augmented by quantities derived by the Exoplanets-A work. With this catalogue we have implemented an online database that also includes X-ray and OHP spectra and TESS light curves. In addition, we have developed a tool, exoVOSA, that is able to fit the spectral energy distribution of exoplanets. Results. We give an example of using the database to study the effects of the host star high energy emission on the exoplanet atmosphere. The sample has a planet radius valley that is located at 1.8 R⊕, in agreement with previous studies. Multiplanet systems in our sample were used to test the photoevaporation model and we find that out of 14 systems, only one significant case poses a contradiction to it (K2-3). In this case, the inner planet of the system is above the radius gap while the two exterior planets are both below it. This indicates that some factor not included in the photoevaporation model has increased the mass-loss timescale of the inner planet. In summary, the exoplanet and stellar resources compiled and generated by ExoplANETS-A form a sound basis for current JWST observations and for future work in the era of Ariel.
Authors 15
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Affiliation as printed
Centro de Astrobiología (CSIC-INTA), ESAC Campus, 28692 Villanueva de la Cañada, Madrid, Spain
Centro de Astrobiología (CSIC-INTA), ESAC Campus, E-28692 Villanueva de la Cañada, Madrid, Spain
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University of Vienna · University of Leicester · Commissariat à l'Énergie Atomique et aux Énergies Alternatives · CEA Paris-Saclay - Etablissement de Saclay · Max Planck Institute for Astronomy · Instituto Nacional de Técnica Aeroespacial · CEA Paris-Saclay · Centro de Astrobiología · University College London
Affiliation as printed
School of Physics & Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK
CAB-INTA, Madrid, Spain;
CEA Saclay, Paris, France;
MPIA, Hei-delberg, Germany;
School of Physics & Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, United Kingdom
Universitat Wien, Austria
University College London, U.K.; University of Le-icester, U.K.; SRON, Utrecht, NL;
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University of Vienna · University of Leicester · Commissariat à l'Énergie Atomique et aux Énergies Alternatives · CEA Paris-Saclay - Etablissement de Saclay · Max Planck Institute for Astronomy · Instituto Nacional de Técnica Aeroespacial · CEA Paris-Saclay · Centro de Astrobiología · University College London
Affiliation as printed
School of Physics & Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK
CAB-INTA, Madrid, Spain;
CEA Saclay, Paris, France;
MPIA, Hei-delberg, Germany;
School of Physics & Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, United Kingdom
Universitat Wien, Austria
University College London, U.K.; University of Le-icester, U.K.; SRON, Utrecht, NL;
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Affiliation as printed
Centro de Astrobiología (CSIC-INTA), ESAC Campus, 28692 Villanueva de la Cañada, Madrid, Spain
Centro de Astrobiología (CSIC-INTA), ESAC Campus, E-28692 Villanueva de la Cañada, Madrid, Spain
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Affiliation as printed
Centro de Astrobiología (CSIC-INTA), ESAC Campus, 28692 Villanueva de la Cañada, Madrid, Spain
Centro de Astrobiología (CSIC-INTA), ESAC Campus, E-28692 Villanueva de la Cañada, Madrid, Spain
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Affiliation as printed
Centro de Astrobiología (CSIC-INTA), ESAC Campus, 28692 Villanueva de la Cañada, Madrid, Spain
Centro de Astrobiología (CSIC-INTA), ESAC Campus, E-28692 Villanueva de la Cañada, Madrid, Spain
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Affiliation as printed
Centro de Astrobiología (CSIC-INTA), ESAC Campus, 28692 Villanueva de la Cañada, Madrid, Spain
Centro de Astrobiología (CSIC-INTA), ESAC Campus, E-28692 Villanueva de la Cañada, Madrid, Spain
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University of Vienna · University of Leicester · Commissariat à l'Énergie Atomique et aux Énergies Alternatives · CEA Paris-Saclay - Etablissement de Saclay · Max Planck Institute for Astronomy · Instituto Nacional de Técnica Aeroespacial · CEA Paris-Saclay · Centro de Astrobiología · University College London
Affiliation as printed
School of Physics & Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK
CAB-INTA, Madrid, Spain;
CEA Saclay, Paris, France;
MPIA, Hei-delberg, Germany;
School of Physics & Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, United Kingdom
Universitat Wien, Austria
University College London, U.K.; University of Le-icester, U.K.; SRON, Utrecht, NL;
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Centre National de la Recherche Scientifique · Université Paris Cité · Commissariat à l'Énergie Atomique et aux Énergies Alternatives · Université Paris-Saclay · Astrophysique, Instrumentation et Modélisation
Affiliation as printed
Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM, 91191 Gif-sur-Yvette cedex, France
Exoplanet Atmosphere New Emission
Université Paris-Saclay, Université Paris cité, CEA, CNRS, AIM, 91191, Gif-sur-Yvette cedex, France
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Affiliation as printed
Centro de Astrobiología (CSIC-INTA), ESAC Campus, 28692 Villanueva de la Cañada, Madrid, Spain
Centro de Astrobiología (CSIC-INTA), ESAC Campus, E-28692 Villanueva de la Cañada, Madrid, Spain
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Centre National de la Recherche Scientifique · Université Paris Cité · Commissariat à l'Énergie Atomique et aux Énergies Alternatives · Université Paris-Saclay · Astrophysique, Instrumentation et Modélisation
Affiliation as printed
Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM, 91191 Gif-sur-Yvette cedex, France
Exoplanet Atmosphere New Emission
Université Paris-Saclay, Université Paris cité, CEA, CNRS, AIM, 91191, Gif-sur-Yvette cedex, France
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Affiliation as printed
Department of Astrophysics, University of Vienna, Türkenschanzstr. 17, 1180 Vienna, Austria
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Affiliation as printed
Centro de Astrobiología (CSIC-INTA), ESAC Campus, 28692 Villanueva de la Cañada, Madrid, Spain
Centro de Astrobiología (CSIC-INTA), ESAC Campus, E-28692 Villanueva de la Cañada, Madrid, Spain
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Affiliation as printed
Department of Astrophysics, University of Vienna, Türkenschanzstr. 17, 1180 Vienna, Austria
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Radboud University Nijmegen · Space Research Organisation Netherlands
Affiliation as printed
Department of Astrophysics/IMAPP, Radboud University, PO Box 9010, 6500 GL Nijmegen, The Netherlands
SRON Netherlands Institute for Space Research, Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
Department of Astrophysics/IMAPP, Radboud University, PO Box 9010, 6500 GL Nijmegen,The Netherlands
SRON Netherlands Institute for Space Research, Niels Bohrweg 4, NL-2333 CA Leiden, the Netherlands
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