Marie Skłodowska-Curie Actions

Post-doctoral Research Fellowship: MSCA-IF 2017 at the Department of Theoretical and Cosmic Physics

    01/09/2018 12:30 - Europe/Brussels
    H2020 / Marie Skłodowska-Curie Actions
    Spain, Granada
    International Project Office
    Promotion & Advisory Unit

Professor Juan Carlos Suárez, from the Department of Theoretical and Cosmic Physics at the University of Granada, welcomes postdoctoral candidates interested in applying for a Marie Skłodowska-Curie Individual Fellowships (MSCA-IF) in this university. Applicants must comply with the Mobility Rule (more information in the participant guide: http://sl.ugr.es/097k).

The “Stellar Evolution and Nuclesynthesis” team is located at the Sciences Faculty (University of Granada) and belongs to “Física Teórica y del Cosmos” dept. The group has strong expertise in the study of AGB stars, SN progenitors, stellar structure (asteroseismology) evolution (impact of nuclear processes), study of supernovae, and planetary dynamics. The team also participates in technological projects, in particular in the installation and exploitation of the infrared telescope IRAIT at Dome C in Antarctica. The group developed and built the optical systems of this telescope in collaboration with the Spanish enterprise NTE-SENER S.A. Profile of de supervisor: Juan Carlos Suárez is a senior post-doc scientist (“Ramón y Cajal” fellowship) and lecturer (Bachelor and Master). He is expert in asteroseismology of rotating stars, with more than 70 SCI papers (2000 citations, H=27). His main lines of research are the study of the internal structure of intermediate-mass stars, their internal physical processes in particular rotation through the analysis of the stellar pulsation–rotation interaction, and the analysis of photometric light curves. He is a Spanish delegates of the PLATO2.0 (ESA) mission, member of the mission board, coordinator of the design, construction and integration of the PLATO2.0’s main electronic units (MEU), conducted at the IAA-CSIC, and leader of several science WPs. Dr. Suárez is PI of a financed project of the Spanish Ministry of Science, and project scientist of the TOUCAN project (leaded by the Spanish Virtual Observatory at CAB-INTA-CSIC).

Asteroseismology of fast rotating stars

The analysis of intermediate-mass (A-F type) stars (1.5 – 3 solar masses) revealed the presence of periodic patterns in their oscillation spectra. These patterns were found to be compatible with the expected large separation (Dn) for these stars, and similar to those found in solar-like stars. A solid confirmation came from the scaling relation found between the observed Dn and the mean density computed for a sample of well-known stars (including binary stars) at different rotation rates. This pattern has become a fundamental parameter of the oscillation spectrum of these stars, which provides an accurate constraint on the stellar modelling.

This project seeks to perform a systematic study of this new observable among intermediate-mass stars observed from both space and ground-base instruments, in preparation for the forthcoming missions TESS and PLATO. In particular we will study δ Scuti - γ Doradus pulsators, in order to probe the deep interior (g-modes), in addition to the envelope.  Furthermore, those stars can be fast rotators (40 < Vsini < 130 km/s). In that case, the period spacing varies with the pulsation period in g-mode domain, and we want to study its behaviour in the p-mode frequency domain. We will combine seismic diagnostics based on both g- and p-modes to bring valuable constraints on the whole interior of our hybrid target stars. We seek for candidates to work on one or more of the following tasks: 1) analysis of lightcurves (time series analysis); 2) asteroseismic modelling (1D/2D evolution models, perturbative/non-perturbative oscillation computations); 3) systematic search for periodic patterns (large separation, rotation, etc.); 4) combining periodic patterns information to precisely determine fundamental parameters of stars.

Research Area:

  • Physics (PHY)

For a correct evaluation of your candidature, please send the documents below to Professor (jcsuarez@ugr.es):

  • CV
  • Letter of recommendation (optional)