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| Postdoctoral positions in observational astrophysics at CNRS / IRAP, Toulouse, France | Closing date: 2026-09-30
Contact: Jean-Francois Donati |
| We invite applications for two 2+1yr postdoctoral positions in stellar and exoplanet research at the Institut de Recherche en Astrophysique et Planétologie (IRAP) located in Toulouse, France, within the SPIRou science consortium locally coordinated by Drs JF Donati and C Moutou. | | ▸ more | The first project aims at modeling the planetary systems and magnetic topologies of M dwarfs, monitored with the SPIRou near-infrared spectropolarimeter at the Canada-France-Hawaii Telescope (CFHT) since 2019 in the framework of the SPIRou Large Programs. The goal is to exploit SPIRou data collected for a few tens of M dwarfs of various masses, to (i) study the radial velocity curves and filter out activity to unveil / constrain their planetary systems , (ii) analyse the spectropolarimetric data with Zeeman-Doppler imaging (ZDI) to reconstruct the evolving stellar magnetic topologies and characterize the underlying dynamo processes.
The second project aims at modeling the magnetic topologies and accretion processes of pre-main sequence low-mass (T Tauri) stars, also monitored with SPIRou at CFHT since 2019. The goal is to analyze existing and future SPIRou data for a number of T Tauri stars of various masses, ages and accretion rates, to (i) model the spectropolarimetric data with ZDI, reconstruct the evolving stellar magnetic topologies and characterize the magnetospheric accretion processes taking place between the inner accretion disk and the stellar surface, and (ii) study the radial velocity curves and filter out activity to unveil and characterize potential close-in massive planets.
Forthcoming observations will also include, in addition to SPIRou near-infrared spectra, optical spectra simultaneously collected with the ESPaDOnS spectropolarimeter at CFHT, further broadening the panel of available diagnostics for both projects. The work will take place at IRAP with Drs JF Donati and C Moutou, starting Q4 2026 (preferably) or Q1 2027.
In addition to a PhD in astrophysics, the candidates must have a solid background in stellar spectropolarimetry and / or velocimetry to efficiently analyze spectra collected with SPIRou and ESPaDOnS.
The candidates should provide by 2026 September 30 the following documents (PDF only, via a file server):
* a motivation letter (<2p),
* a description of past and current research statements (<5p),
* a CV (<2p)
* a publication list,
* 3 reference letters sent by the mentors (same deadline)
to Drs JF Donati (jean-francois.donati @ cnrs.fr) and C Moutou (claire.moutou @ cnrs.fr).
Short-listed candidates will be invited for an on-line interview ~2 weeks after the deadline.
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