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| Titel |
TArget PrioritizAtion routineS for CHEOPS observations: A grid of planet upper atmosphere models |
| VerfasserIn |
Daria Kubyshkina, Nikolay Erkaev, Luca Fossati, Helmut Lammer, Patricio Cubillos, Monika Lendl |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250141523
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| Publikation (Nr.) |
 EGU/EGU2017-5044.pdf |
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| Zusammenfassung |
| Most of the recent detailed exoplanet studies are focused on the so-called hot Jupiters, since
the smaller planets remain to be difficult to observe. At the same time, low-mass planets in
the habitable zone of bright stars appear to be more interesting in terms of habitability studies
and the quest of an Earth twin. In the last years, the Kepler mission has revealed hundreds of
such intermediate mass (between Earth and Neptune) planets, and the upcoming
CHEOPS mission accounts them as primary targets. The large number of planets so far
discovered and the time-constrained nature of CHEOPS observations indicates the
need of a prioritization scheme, possibly based on the inference of the unknown
planet fundamental parameters, such as the planetary radius for planets discovered
with the radial velocity method. To this end, we elaborated a grid of hydrodynamic
planet upper atmosphere models for planets within this range of parameters: stellar
mass (0.4 − 1.3 Msun), equilibrium (surface) planet temperature (300 − 2000 K),
EUV flux (up to 105 erg⋅ cm−2 s−1), planet radius (1 − 10 Earth radii) and mass
(1 − 40 Earth masses). Interpolation over the grid provides a fast estimation of the
upper atmosphere parameters for any possible target planet inside the parameter
space. We will then couple the grid with planet evolution models to greatly upgrade
what currently available. The grid will be made available through a dedicated web
site. We will present the grid, the first results obtained from its analysis, and future
plans. |
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