• Jérémy Fensch
  • Astrophysics Researcher

    Associate Professor

  • @

    ENS de Lyon

    Centre de Recherche Astrophysique de Lyon

About me

My name is Jérémy Fensch. I am an Associate Professor at ENS de Lyon and astrophysicist researcher at Centre de Recherche Astrophysique de Lyon.

My research focuses on galaxy collisions and induced formation of stars, star clusters and tidal dwarf galaxies. I am also interested in the evolution of globular clusters and the evolution of galactic structures with redshift.

To this purpose, I run and study numerical simulations, using the AMR code RAMSES. I am also involved in observational projects and use data from the VLT (FORS and MUSE) and the Hubble Space Telescope.



Selected Papers

  • The ultra-diffuse galaxy NGC 1052-DF2 with MUSE: II. The population of DF2: stars, clusters and planetary nebulae
  • Fensch J., van der Burg, R. F. J.; Jerabkova, T., Emsellem, E., Zanella, A., Agnello, A., Hilker, M., Mueller, O., Rejkuba, M., Duc, P.-A. Durrell, P., Habas, R., Lim, S., Marleau, F. R.; Peng, E. and Sanchez Janssen, R.
    2019, A&A, 625, 77
    Research highlight in Nature

  • High-redshift major mergers weakly enhance star formation.
  • Fensch J., Renaud F., Bournaud F., Duc P.-A., Agertz O., Amram P., Combes F., Di Matteo P., Elmegreen B., Emsellem E., Jog C. J., Perret V., Struck C. & Teyssier R.
    2017, MNRAS, 465, 1943
    Simulation videos


    Research experience

    Associate Professor
    ENS de Lyon
    Centre de Recherche Astrophysique de Lyon


    ESO Fellow, 2 years
    ESO-Garching, Germany


    PhD Student, 3 years
    Université Denis Diderot, Paris 7
    CEA-Saclay, France
    Thesis Manuscript


    Research assistant, 4 months
    ESO-Santiago, Chile



    Associate Professor
    192h teaching time per year
    L3/M1/M2 and agregation preparation
    ENS de Lyon


    Instructor, 2 years, total teaching time 123h
    1st year level: Statistical Methods
    2nd year level: Electrokinetics, Waves and Vibrations
    Université Denis Diderot, Paris 7



    Part iii of the Mathematical Tripos
    Master of Advanced Studies in Applied Mathematics and Theoretical Physics.
    University of Cambridge, UK
    Passed with distinction


    Diplôme d'ingénieur (French engineering degree)
    École polytechnique , Palaiseau, France