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- W2099729069 abstract "We present high angular resolution observations obtained with the Owens Valley and the IRAM Plateau de Bure millimeter-wave interferometers toward the hot core in G29.96–0.02. We observed the ground state (6–5), (6–5), vibrationally excited () (6–5), and the (1–0) rotational transitions, as well as the 2.7 mm continuum emission. Our continuum maps show evidence of a compact source barely resolved whose diameter we estimate to be about 0.06 pc and whose emission mechanism is dominated by thermal emission from warm dust. Both the ground state and the methyl cyanide lines, as well as other serendipituosly detected molecular transitions, arise from a compact source at the same position as the 2.7 mm continuum emission. The observations sample the structure and kinematics of the molecular surroundings of the hot core and from the data we estimate a gas mass of about in a region with a diameter of 0.32 pc, corresponding to an average number density of about 106 cm-3. Our data show evidence of both a temperature and density gradient in the hot core and its molecular surroundings. The density gradient, in particular, is consistent with the infalling scenario suggested by the presence of an East-West oriented velocity gradient, which is however of opposite sign in and . We tentatively interpret the velocity gradient as associated with infall, whereas the gradient, consistent with that measured in by Cesaroni et al. ([CITE]), is likely to trace a massive rotating disk." @default.
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- W2099729069 date "2003-08-01" @default.
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- W2099729069 title "High resolution observations of the hot core in G29.96–0.02" @default.
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- W2099729069 doi "https://doi.org/10.1051/0004-6361:20030832" @default.
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