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Message SF2A No 803 - 27/08/18


Message SF2A No 803 - 27/08/18

1. Wavefront sensing & control in the ELT/VLT Era Workshop, Paris, October 22 to 24 2018
2. Rappel : Radiative signatures from the cosmos meeting, Paris, 23-26 October
3. Décès de Jean Kovalevsky

1. Wavefront sensing & control in the ELT/VLT Era Workshop, Paris, October 22 to 24 2018

We are pleased to announce the workshop "Wavefront sensing & control in the ELT/VLT Era", that will take place at Université Paris Diderot, Amphitheater Alan Turing, Paris, on October 22-24 2018.

Wavefront sensing (WFS) and Control are at the heart of Adaptive Optics (AO) and often dictate the performance. Various challenges are raised by the astrophysics programs like the characterization of exoplanets, the study of the stellar populations or the observation of the very first galaxies, for instance. For such programs, the requirements are to sense and control the wave-front in wide field of view, to combine natural and laser guide stars, to hunt for high sensitivity or high dynamics.

The Workshop website is https://tinyurl.com/WFSC-paris

Registrations are open.

Abstract submission deadline is September, 7th, 2018

Transmis par Gerard Rousset

2. Rappel : Radiative signatures from the cosmos meeting, Paris, 23-26 October

https://radcosmos.sciencesconf.org/

The program is now online but there is still place for a limited number of contributions (posters).

This conference is devoted to state-of-the-art modern tools used to diagnose the properties of emitting astrophysical objects and to predict their structure. Radcosmos will thus focus on the topology, composition, dynamics, distance, morphology of different cosmic objects, from extrasolar planets up to Active Galactic Nuclei, and the information provided by radiation.

The program covers different aspects like : Fundamental radiative transfer and modeling techniques, Exoplanet atmospheres, Cool stars & brown dwarfs, Hot stars & degenerate stars, Binaries, Supernovae, Stellar population synthesis, Accretion disks.

Abstracts submission has been extended to 1th October.

Transmis par Chantal Stehlé

3. Décès de Jean Kovalevsky

Nous avons appris le dĂ©cès de Jean Kovalevsky, Ă  89 ans, vendredi 17 aoĂ»t. Astronome Ă©mĂ©rite Ă  l’Observatoire de la CĂ´tĂ© d’Azur, il Ă©tait un spĂ©cialiste renommĂ© de mĂ©canique cĂ©leste, de gĂ©odĂ©sie spatiale et d’astromĂ©trie. Jean Kovalevsky s’Ă©tait battu sans relâche pour la sĂ©lection et la prĂ©paration de la mission spatiale Hipparcos, apportant une contribution majeure Ă  son retentissant succès. Il a par ailleurs Ă©tĂ© le premier directeur du CERGA, de 1974 Ă  1982. Une nĂ©crologie dĂ©taillĂ©e est disponible sur le site de l’ESA : https://www.cosmos.esa.int/web/gaia/jean-kovalevsky

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