I Simposio de Postgrado 2023. Ingeniería, ciencias e innovación

MÓDULO_ 01 Astronomía y Física 24 ALMA VIEW OF BIPOLAR MOLECULAR OUTFLOWS IN LOW-MASS PROTOSTARS OF THE CHAMAELEON STAR FORMING REGION 1 Departamento de Astronomía, Universidad de Chile. *Email: aiswarya@das.uchile.cl Aiswarya Arun 1* , Diego Mardones 1 ABSTRACT Bipolar outflows originate as disk winds at radii < 100 au from the central protostar and play an essential role in the ejection of angular momentum to in part moderate the protostellar mass accretion, cementing their role as an essential ingredient of the star formation process. The observed outflows are interpreted as arising from an entrainment process in which a highly collimated jet or a wide angle wind interacts with the molecular gas from the parent dense core. Studies that compare the core mass function (CMF) to the initial mass function (IMF) of stars suggest that the masses of stars are inherited from their parent core, and that there is an approximately constant core to star efficiency of ~30%.The general claim is that gas dispersal caused by outflows is the main source of this core to star efficiency. If this interpretation of the CMF studies is correct, outflows must disperse about 70% of the gas surrounding cores during their lifetimes. However, the existing studies on outflow core interactions are not enough to confirm or refute this. Hence, this study reveals the preliminary results of studies of the 16 low-mass protostars in the Chamaeleon Star-forming region using ALMA Band 6 observations using the CO, 13CO, C18O, H2CO, SiO, and N2D+ molecular lines. REFERENCES Arce et al. 2007; Pudritz & Norman, 1985; André et al. 2010; Offner et al. 2014; Alves et al.2007; Pineda et al. 2012; SeguraCox et al. 2018.