Interpreting the simultaneous variability of near-IR continuum and line emission in young stellar objects

D. Lorenzetti, S. Antoniucci, T. Giannini, A. Di Paola, A. A. Arkharov, V. M. Larionov

Published 2012-10-01Version 1

We present new near-infrared (IR) spectra (0.80-1.35um) of the pre-Main Sequence source PV Cep taken during a monitoring program of eruptive variables we are conducting since some years. Simultaneous photometric and spectroscopic observations are systematically carried out during outburst and quiescence periods. By correlating extinction-free parameters, such as HI recombination lines and underlying continuum, it is possible to infer on the mechanism(s) responsible for their origin. Accretion and mass loss processes have a dominant role in determining the PV Cep irregular variability of both continuum and line emission. The potentialities of the observational modality are also discussed.