Miguel Figueira, Katarzyna Malek, Agnieszka Pollo (National Centre for Nuclear Research)

Having an accurate estimation of the Star Formation Rate (SFR) is crucial to understand the formation and evolution of galaxies over cosmic time. Thanks to SDSS, numerous studies have been performed which highlighted our comprehension about the local Universe. To go one step further and expand our knowledge about the distant Universe, similar studies have to be undertaken at z>0.5.  We made use of VIPERS, the biggest available spectroscopic survey at z~0.7. Contrary to the local Universe, Halpha cannot be used as a SFR tracer. Therefore, different tracers have to be used in order to recover the SFR with a good accuracy. We used the CIGALE code to reconstruct the Spectral Energy Distribution from UV to FIR in order to obtain an estimation of the SFR. We exploited several SFR tracers, calibrated for the local Universe, to estimate the SFR of VIPERS galaxies. A comparison between the SFR obtained with CIGALE and the SFR estimated using different tracers is made in order to discuss the validity of SFR laws at z<0.3 extrapolated at z~0.7. We investigated which one is the most accurate and practical to use at z~0.7. Using SDSS data, the SFR values between z<0.3 and at z~0.7 are also discussed. One interesting feature of VIPERS is the observation of the [OII] line which is known to be a good SFR tracer. We examined how the metallicity affects the [OII] SFR estimations.