Journal ArticleDynamics in Star-forming Cores (DiSCo): project overview and the first look towards the B1 and NGC 1333 regions in PerseusChen, Che-Yu; Friesen, Rachel; Li, Jialu; Schmiedeke, Anika; Frayer, David; Li, Zhi-Yun; Tobin, John; Looney, Leslie W; Offner, Stella; Mundy, Lee G; Harris, Andrew I; Church, Sarah; Ostriker, Eve C; Pineda, Jaime E; Hsieh, Tien-Hao; Lam, Ka Ho<title>ABSTRACT</title> <p>The internal velocity structure within dense gaseous cores plays a crucial role in providing the initial conditions for star formation in molecular clouds. However, the kinematic properties of dense gas at core scales (∼0.01−0.1 pc) has not been extensively characterized because of instrument limitations until the unique capabilities of GBT-Argus became available. The ongoing GBT-Argus Large Program, Dynamics in Star-forming Cores (DiSCo) thus aims to investigate the origin and distribution of angular momentum of star-forming cores. DiSCo will survey all starless cores and Class 0 protostellar cores in the Perseus molecular complex down to ∼0.01 pc scales with &lt;0.05 km s−1 velocity resolution using the dense gas tracer N2H+. Here, we present the first data sets from DiSCo towards the B1 and NGC 1333 regions in Perseus. Our results suggest that a dense core’s internal velocity structure has little correlation with other core-scale properties, indicating these gas motions may be originated externally from cloud-scale turbulence. These first data sets also reaffirm the ability of GBT-Argus for studying dense core velocity structure and provided an empirical basis for future studies that address the angular momentum problem with a statistically broad sample.</p>MNRAS2023-12-2310531520Monthly Notices of the Royal Astronomical Society527410279 to 102930035-8711https://doi.org/10.1093/mnras/stad38682107340; 2307199National Science Foundation