Feeding a Protostar with 10 000 au Scale Streamers

Dense cores are the places where stars formed within supersonic Molecular Clouds. These dense regions ( n ∼ 10 5 cc) cold T ∼10 K) and display subsonic levels of turbulence (Mach 0.5), represent initial conditions for both star disk formation. However, influence parental core properties on formation process is still not well constrained, it therefore crucial to study with interferometers better understand connection. We present NOEMA observations a Class 0 object, which has been suggested under gravitational instability (GI) (asymmetrical features in ALMA high resolution dust continuum emission). Our new data reveal previously unseen large scale (∼10,000 au, or 33′′) streamer fresh gas from surrounding down scales. This almost perpendicular outflow, contains material turbulence, unperturbed by outflow. Based total mass free-fall timescale, we estimate infall rates scales, clearly show that accretion via can have an important role Moreover, these results observed asymmetries could also be driven asymmetric flows instead GI. result shows power importance studying provide complete proper picture