The “Blue-Bulge” Infall Signature toward IRAS 16293–2422

摘要: We present the first detection of "blue-bulge" infall signature toward a protostellar source. The blue-bulge can be observed in centroid velocity maps objects when dominates over rotation. This detected under wide variety source conditions. protobinary system such as IRAS 16293-2422 suggests that detailed studies gravitational collapse large number sources may now possible. Our CS J = 7 → 6 data appear to tracing gaseous material inner circumbinary core, while 5 4 and HCO+ 3 trace outer envelope static core addition core. mass accretion rate through region appears consistent with an inside-out model for Using three-dimensional radiative transfer models based on rotating, solution Terebey, Shu, & Cassen, we derive parameters cloud best-fit radius is ~39'' (0.03 pc).