GBT22B-163

Mind the gap: connecting the scales between filaments and protostars

Abstract

At large scales, filaments and clumps are ubiquitous in molecular clouds, both quiescent and actively forming stars. In small, core to envelope scales, there has been a recent trend of finding infalling flows of material ("streamers") towards protoplanetary disks. However, there are no extended gas observations of the intermediate scales to understand if the larger scale filaments influence the mass accretion process. We propose to observe C18O(1-0) molecular emission with GBT Argus targeting a clustered star formation region in NGC 1333. There is a bright mass reservoir in previous C18O observations with coarser resolution that does not coincide with dense core positions. However, the weaker, filamentary emission in C18O has similar kinematics to previous NH3 maps with GBT and VLA. The proposed observations will allow us to study the kinematics of the extended gas emission, not observed in dense gas tracers like NH3, and ultimately connect the large scale filaments with protostars in the immediate vicinity. For this purpose, we request 18 hours of the Argus receiver.

Investigators

Name	Institution
Maria Teresa Valdivia Mena *	European Southern Observatory
Dominique Segura-Cox	Illinois at Urbana-Champaign, University of; Max-Planck-Institut für extraterrestrische Physik; Rochester, University of; Texas at Austin, University of
Paola Caselli	Max-Planck-Institut für extraterrestrische Physik; Leeds, University of
Jaime Pineda	Max-Planck-Institut für extraterrestrische Physik

* indicates the PI