| Abstract: Circumstellar disks play a crucial role in early stellar evolution and planet formation, undergoing mass loss through accretion onto the central star, magnetically driven disk winds, and photoevaporative outflows. Despite their importance, the relative contributions and timescales of these processes remain poorly constrained due to the inherently variable nature of star–disk interactions. To investigate these mechanisms, we are conducting a multiwavelength spectroscopic study of a sample of disk-bearing young stars. In this poster, we present initial results for PDS 8, a young (~4 Myr), nearby (~140 pc) Classical T Tauri star. Using multi-epoch optical and near-infrared spectroscopy data, we characterize its stellar and accretion properties, and identify significant accretion variability, with mass accretion rates ranging from ~10⁻⁷ to 10⁻⁸ M☉ yr⁻¹. In this poster, we will discuss how this variability may be linked to changes in the inner disk structure and/or magnetospheric accretion processes. We will also highlight the importance of coordinated multi-epoch and multiwavelength observations in understanding variable accretion in young stellar systems. |
