Postdoc position "Stellar properties for asteroseismic stars"

The Interferometric Survey of Stellar Parameters (ISSP) ERC-Adv grant, started on 1 Sep 2021 for 5 years, aims at realizing and exploiting an ambitious and homogenous survey of the angular diameters of a thousand stars. It takes benefit of the recently commissioned CHARA/SPICA instrument installed on the CHARA Array, Mount Wilson Observatory (USA, CA). The survey is built to address key questions about the relation between planets and stars and to offer to the broader community a unique and primary source of direct information on a representative and large sample of stars all over the HR diagram. The ISSP team is offering three 3-year post doc positions to support the scientific programs of the survey that benefits from 200 nights of observation over the four coming years.

This position is focused on the S02 and S03 SPICA programs aiming at obtaining direct interferometric measurements of F5-K7 stars known as asteroseismic targets. This program is closely related to the ESA PLATO mission for which CHARA/SPICA aims at producing reliable interferometric measurements before the operation (extraction of non-seismic parameters of stars in the PLATO Input Catalog) and during the operation through follow-up programs. Managing these observing programs in coordination with the co-investigators of the ISSP survey will be one of the main topics of this position. The second main aspect will be to interpret the interferometric measurements together with existing stellar atmosphere models and additional data like spectroscopy and photometry for the optimal extraction of stellar radius and stellar effective temperature. It is expected that the methods that will be developed will benefit to the whole ISSP survey.