ALMA observations of the young protostellar system Barnard 1b: signatures of an incipient hot corino in B1b-S.

ABSTRACT: The Barnard 1b core shows signatures of being at the earliest stages of low-mass star formation, with two extremely young and deeply embedded protostellar objects. Hence, this core is an ideal target to study the structure and chemistry of the first objects formed in the collapse of prestellar cores. We present ALMA Band 6 spectral line observations at ~0.6″ of angular resolution towards Barnard 1b. We have extracted the spectra towards both protostars, and used a Local Thermodynamic Equilibrium (LTE) model to reproduce the observed line profiles. B1b-S shows rich and complex spectra, with emission from high energy transitions of complex molecules, such as CH3OCOH and CH3CHO, including vibrational level transitions. We have tentatively detected for the first time in this source emission fr

SUBMITTER: Marcelino N 

PROVIDER: S-EPMC6914381 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature