Laboratoire d’Études du Rayonnement et de la Matière en Astrophysique et Atmosphères

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LERMA Detailed Presentation

12 January 2019

LERMA presentation

LERMA (Laboratory for Studies of Radiation and Matter in Astrophysics and Atmospheres) is a research entity operated by CNRS and 3 higher education institutions: Observatoire de Paris (OP), (...)

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11 January 2019

Management team

Director: Jean-Hugues FILLION
jean-hugues.fillion @ sorbonne-universite.fr
Deputy Director: Franck LE PETIT
franck.lepetit @ obspm.fr
Technical Director : Jean-Michel KRIEG (...)

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11 January 2019

Administrative team

The administrative team of LERMA is composed of 7 agents who work closely with the administrative services of the CNRS (Ile de France-Meudon delegation (DR5) and INSU), the Paris Observatory (...)

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29 October 2014

Main partners and collaborations

LERMA develope numerous collaborations both national and international
Major agencies and institutions in charge of space missions and major ground-based facilities having collaborations with (...)

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Séminaires à venir

Vendredi 17 janvier 2020, 14h00
Salle de l'atelier, Paris
The role of feedback- and accretion-driven turbulence in galaxy build-up
résumé :
Cosmological models describe accurately the growth of large scale, dark matter-dominated, structures, but largely fail to reproduce the baryon content and physical properties of galaxies. Why? Essentially because the build-up of galaxies is regulated by a complex interplay between gravitational collapse, galaxy merging and feedback related to AGN and star formation, for which we still miss a robust theory. The energy released by these processes has to dissipate for gas to cool, condense, and form stars. How gas cools is thus a key to understand galaxy formation and why it such an inefficient process. In this seminar, I will discuss a few examples where turbulence driven by gas accretion, feedback, and galaxy interactions, which is largely ignored in models of galaxy formation, and captured in current simulations only over a limited range of scales, may have a major impact on galaxy and halos properties.

Vendredi 24 janvier 2020, 14h00
Salle de l'atelier, Paris
The accretion-ejection connection in planet-forming disks. New perspectives from high angular resolution observations
Vendredi 7 février 2020, 14h00
Salle de l'atelier, Paris
Redistribution of angular momentum from core to disk scales in Class 0 stars
Mathilde GAUDEL
Tous les séminaires...