[Todos] CICLO DE COLOQUIOS CIENTIFICOS: Jueves 17 de Marzo de 2016 a las 14:00 hs.

[difusion en iafe.uba.ar]

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                     CICLO DE COLOQUIOS CIENTÍFICOS
                    Instituto de Astronomía y Física del Espacio
                                  CONICET-UBA
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                            Dra Carolina Von Essen
                  Characterization of exoplanet atmospheres.
       Stellar Astrophysics Centre, Department of Physics and Astronomy,
Aarhus University,
            Institut für Astrophysik Göttingen, Göttingen, Germany

                  Jueves 17 de marzo de 2016, 14:00 hs.
                           Aula del Edificio IAFE


As our Solar System planets reveal, the formation and composition of a
planetary atmosphere depends mainly on the evolutionary history of the
planet, the distance to the host star, and the position in the
proto-planetary disk in which the planet formed. Thus, by studying the
exoplanet atmospheres we can probe exoplanet formation and evolution. In
this context, primary transits present a unique opportunity to study the
properties of the exoplanet atmospheres. During these events, a fraction
of the stellar light passes through the optically thin part of the
planetary atmosphere, picking up spectral features from it. Till date,
only a few transiting exoplanet atmospheres have been characterized in
detail. Examples are HD-209458b, HD-189733b, GJ-436b, and GJ-1214b. The
first lesson learned is that exoplanet atmospheres are diverse. However,
this is based on a small number of statistics. In this talk I will give a
breve introduction on the topic and I will show you the work I have done
so far on the hot Jupiters WASP-33b, Qatar-1b, HAT-P-19b and
HAT-P-12b.