Observatoire de la Côte d'Azur Observatoire de la Côte d'Azur
    • Aurélien Crida

    Crida Aurélien

    Aurélien Crida

    Details
    Crida Aurélien

    Maître de Conférences  (Assistant Professor)

     Supervisor of MAUCA (Master in Astrophysics at University Côte d'Azur)

     UMR LAGRANGE - Equipe planétologie

       office: PHC N-06

      phone:  +33 4 92 00 30 52
      email:

       address:
    P.H.C.
    Boulevard de l'Observatoire
    CS 34229
    06304 Nice Cedex 4

       secondary address:
    Bâtiment H. Fizeau
    Campus Valrose
    28, Avenue Valrose
    06108 Nice Cedex 2
    Bureau : 01-014
    Tél. : +33492076311

     

       Research interests :

    My field of interest is planet formation in general. More specifically, I work on the migration of planets, and on the origin of their satellites, and I am also interested in the characterisation of exoplanets.

    Planetary migration is due to the gravitational interaction between the planets and the proto-planetary disk in which they are born. On the theory and the causes of planetary migration, I (have) work(ed) on aspects such as the corotation torque, the opening of a gap, and mainly the type II migration of giant planets, but also on the structure of the protoplanetary disk. On the applications and consequences, I (have) study(ied) how several planets get caught in resonance, in particular in the case of the solar system, and on the inclination of the final planetary system with respect to the disk and to the equatorial plane of the star.

    The satellites of Saturn are interacting with the main rings in a way very much similar to planets with a proto-planetary disk, and therefore, they migrate outwards. We have shown that this implies that the regular satellites of Saturn are actually born from the rings (which are likely several billion years old) as they spread beyond the Roche radius. This process explains the mass-distance distribution of the satellites, and applies also to the satellite systems of Uranus, Neptune, the Earth and Mars.

     

       Selected publications :

    On the width and shape of gaps in protoplanetary disks
    Crida, A.; Morbidelli, A.; Masset, F., 2006, Icarus, 181, 587-604
    doi : 10.1016/j.icarus.2005.10.007 ;  http://adsabs.harvard.edu/abs/2006Icar..181..587C ;  PDF

    Minimum Mass Solar Nebulae and Planetary Migration
    Crida, A. 2009, ApJ, 698, 606-614
    doi: 10.1088/0004-637X/698/1/606 ; http://adsabs.harvard.edu/abs/2009ApJ...698..606C ; PDF

    Formation of Regular Satellites from Ancient Massive Rings in the Solar System
    Crida, A.; Charnoz, S., 2012, Science, 338, 1196-1199
    doi: 10.1126/science.1226477 ; http://adsabs.harvard.edu/abs/2012Sci...338.1196C ; PDF ; Article + SI

    Spin-orbit angle distribution and the origin of (mis)aligned hot Jupiters
    Crida, A.; Batygin, K., 2014, A&A, 567, A42
    doi: 10.1051/0004-6361/201323292 ; http://adsabs.harvard.edu/abs/2014A%26A...567A..42C  ; PDF

    Mass, Radius, and Composition of the Transiting Planet 55 Cnc e: Using Interferometry and Correlations
    Crida, A.; Ligi, R.; Dorn, C.; Lebreton, Y., 2018, ApJ, 860, 122
    doi: 10.3847/1538-4357/aabfe4 ; http://adsabs.harvard.edu/abs/2018ApJ...860..122C  ; PDF
    + doi: 10.3847/2515-5172/aae1f6 ; http://adsabs.harvard.edu/abs/2018RNAAS...2c.172C  ; PDF

    Are Saturn's rings actually young?
    Crida, A.; Chanorz, S.; Hsu, H-W.; Dones, L., 2019, Nature Astronomy, 3, 967-970
    doi: 10.1038/s41550-019-0876-y ; https://ui.adsabs.harvard.edu/abs/2019NatAs...3..967C ; PDF

    Pages Personnelles

    Site Lagrange


     

    Observatoire de la Côte d’Azur - Boulevard de l’Observatoire
    CS 34229 - F 06304 NICE Cedex 4
    Tél. : +33 (0)4 92 00 30 11 - Fax : +33 (0)4 92 00 30 33
    Copyright © 2015 - oca.eu - Tout droit réservé.

    Logo Lagrange observatoire côte d'azur     logo MESR    logo UNS

    Aller au haut