Direct Infall Signatures and Complex Organic Molecules toward an Isolated Embedded Protostar BHR 71

Our ALMA observations of HCO⁺ and HCN show such redshifted absorption toward an isolated core, BHR 71. Both lines show a similar redshifted absorption profile. We also found emissions of complex organic molecules (COMs) around 345 GHz from a compact region centered on the continuum source, which is barely resolved with a beam of 0″27, corresponding to ∼50 AU.