Séminaires

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18 février 2020

Properties of exoplanets and systems with Kepler

Le 1 juin 2015 De 10h30 à 12h00 Jason SteffenNorthwestern University NASA's Kepler mission has revolutionized the field of exoplanets and its discoveries give new insights into our theories of planet formation and dynamical evolution. With over 4000 planet candidates and 1000...

18 février 2020

Long-lived double-bars in galaxies

Le 24 avril 2015 De 10h30 à 12h00 Hervé WOZNIAK Observatoire astronomique de Strasbourg  Double-barred galaxies account for almost one third of all barred galaxies, suggesting that nuclear/inner stellar bars, which are embedded in large-scale primary bars, are long-lived...

18 février 2020

Gravitational lensing: A Swiss knife to dissect galaxies !

Le 17 avril 2015 De 10h30 à 12h00 Dominique Sluse Department of Astrophysics, Geophysics, Oceanography, Liège, Belgium   Strong gravitational lensing is a major tool of modern extragalactic astrophysics. The lensing phenomenon can be used as a natural telescope to magnify...

18 février 2020

The Crab pulsar and its nebula: Surprises in gamma-rays

Le 10 avril 2015 De 10h30 à 12h00 Rolf Buehler DESY Zeuthen   The Crab nebula and its pulsar (referred to together as “Crab”) have historically played a central role in astrophysics. True to their legacy, several unique discoveries have been made recently. The Crab was...

18 février 2020

Diffuse interstellar bands in the Galaxy and beyond

Le 27 mars 2015 De 10h30 à 12h00 Ana MONREAL-IBERO Observatoire de Paris  Diffuse Interstellar Bands (DIBs) are non-stellar weak absorption features found in the spectra of stars viewed trough one or several clouds of interstellar medium (ISM). Identified for the first time...

18 février 2020

Big Data, The Cannon & The Bulge

Le 20 mars 2015 De 14h00 à 15h00 Melissa NESS MPIA, Heidelberg  I will present The Cannon, a method that uses a model built directly from the spectra of only 550 stars, to determine stellar parameters (of Teff, log g, [Fe/H] and [alpha/Fe]) for 150,000 stars in the APOGEE...

18 février 2020

Shedding light on the dark side of our Universe

Le 13 mars 2015 De 10h30 à 12h00 Ippocratis SALTAS Center of Astronomy and Astrophysics, University of Lisbon, PortugalThe main topic of this talk will be the challenges one faces when trying to explain the observed late-time acceleration of our Universe both from a theoretical...

18 février 2020

The MESSIER satellite: unveiling galaxy formation

Le 16 février 2015 De 14h00 à 15h00 David VALLS-GABAUD LERMA, Obs. Paris The MESSIER satellite has been designed to explore the extremely low surface brightness universe at UV and optical wavelengths. The two driving science cases target the mildly- and highly non-linear...

18 février 2020

Data and Analysis Centre for Exoplanets

Le 13 février 2015 De 10h30 à 12h00 Nicolas BUCHSCHACHER Observatoire de Genève The Data Analysis Center for Exoplanets (DACE) is a facility based at the University of Geneva (CH) dedicated to extrasolar planets data visualisation, exchange and analysis. DACE is a platform...