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Le 5 juin 2015 De 10h30 à 12h00 Mathieu BARTHELEMY IPAG, Grenoble Les aurores polaires sont des phénomènes lumineux visibles généralement autour des pôles. Ces phénomènes sont présents sur Terre mais également sur d'autres planètes. Nous aborderons les...
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...
Le 21 mai 2015 De 10h30 à 12h00 Amphithéâtre de la Grande Coupole Michel MAYOR Observatoire Astronomique de l'Université de Genève During the last 20 years, an important fraction of the 2000 exoplanets presently known have been discovered by Doppler spectroscopy. ...
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...
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...
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...
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...
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...
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...
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...