Eruptive Behavior of Magnetically Layered Protoplanetary Disks in Low-metallicity Environments

Abstract A protoplanetary disk (PPD) typically forms a dead zone near its midplane at distance of few astronomical units from the central protostar. Accretion through such magnetically layered can be intrinsically unstable and has been associated with episodic outbursts in young stellar objects. We present first investigation into effects low-metallicity environment on structure zone, as well resulting outbursting behavior PPD. conducted global numerical hydrodynamic simulations PPD formation evolution thin-disk limit. The consequences metallicity were considered via gas dust opacity disk, thickness active surface layer, temperature prestellar cloud core. show that metal-poor disks accumulate much more mass innermost regions compared to solar-metallicity counterparts. duration phase also varies metallicity; showed powerful luminosity eruptions shorter burst phase, which was confined mostly early, embedded stages evolution. lowest-metallicity higher core most significant differences. occurrence relatively rare around low-mass stars, this especially true lowest metallicities. conclude metal content have profound both terms accretion.