Holly S. Thomas, G. A. Fuller
Abstract
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Aims.The presence of depletion (freeze-out) of CO around low-mass protostars is well established. Here we observe 84 candidate young high-mass sources in the rare isotopologues C17O and C18O to investigate whether there is evidence for depletion towards these objects.
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Aims.The presence of depletion (freeze-out) of CO around low-mass protostars is well established. Here we observe 84 candidate young high-mass sources in the rare isotopologues C17O and C18O to investigate whether there is evidence for depletion towards these objects.
Key concepts: Isotopologue, Protostar, Astrophysics, Physics, Radiative transfer, Abundance (ecology), Astrochemistry, Line (geometry)