The M-regression estimator has recently been widely used to build spectral estimators in time series models. In this paper, we extend approach when the data follow a periodic autoregressive moving average process. We introduce an of parameters based on classical Whittle estimator. finite sample size performances proposed are analyzed under scenarios PARMA processes with and without additive out...

Planet formation is sensitive to the conditions in protoplanetary disks, for which scaling laws as a function of stellar mass are known. We aim test whether observed population planets around low-mass stars can be explained by these trends, or if separate channels needed. address this question confronting state-of-the-art planet synthesis model with sample M dwarfs HARPS and CARMENES radial vel...