Streamers feeding the SVS13-A protobinary system: astrochemistry reveals accretion shocks?
E. Bianchi, A. López-Sepulcre, C. Ceccarelli, C. Codella, L. Podio, Mathilde Bouvier, Joan Enrique-Romero, R. Bachiller, B. Leflóch
Abstract
from the systemic velocities). We investigate the origin of the molecular emission in the streamer, in light of thermal sublimation temperatures calculated using updated binding energy (BE) distributions. We propose that the observed emission is produced by an accretion shock at the interface between the accretion streamer and the disk of VLA4A. Thermal desorption is not completely excluded in case the source is actively experiencing an accretion burst.
Topics & Concepts
Submillimeter ArrayProtostarAstrophysicsPhysicsMillimeterAccretion (finance)Sublimation (psychology)AstrochemistryDeuteriumFormamideThermal desorptionAstronomyStar formationDesorptionChemistryAtomic physicsStarsInterstellar mediumGalaxyPhysical chemistryPsychologyPsychotherapistOrganic chemistryAdsorptionAstrophysics and Star Formation StudiesMolecular Spectroscopy and StructureStellar, planetary, and galactic studies