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Doppler winds measurements of Saturn's atmosphere

Miguel Silva


I will give a glimpse of the work I have been developing throughout this first year of my PhD, focusing on the adaptation of the Doppler velocimetry method to measurements the zonal winds on Saturn's atmosphere. The data I handle, comes from observations carried out in 2004 with the UVES spectrograph at ESO's VLT. Our Doppler technique has provided the first ground-based characterization of the latitudinal profile of zonal wind in the atmosphere of Saturn, tools to construct the first zonal wind field map in the visible, as well as new constraints on wind variations with local time. The average zonal wind profile retrieved is consistent with data from Cassini's Visible and Infrared Mapping Spectrometer (VIMS), but with non-negligible variability in local time (longitude) and in latitude. The ongoing results are promising and can open interesting doors and perspectives in this field of investigation.

2017 October 02, 15:00

Observatório Astronómico de Lisboa (Seminar room)
Tapada da Ajuda, 1349-018 Lisboa

Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia