Unveiling the chemistry of hot protostellar cores with ALMA View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2008-01

AUTHORS

M. Guélin, N. Brouillet, J. Cernicharo, F. Combes, A. Wooten

ABSTRACT

High angular resolution mm-wave observations of the Orion-KL region, made with the IRAM Plateau de Bure interferometer (PdBI), reveal the presence of several cores of size 103 AU, which have distinct spectral signatures. Complex molecules such as ethanol, vinyl cyanide and dimethyl ether show different distributions and their relative abundance varies from core to core by orders of magnitude. The molecular column densities derived in the cores also differ widely from the beam-averaged column densities observed with large single-dish telescopes. Obviously, the predictions of hot core chemistry models must be checked against high resolution observations. ALMA, which allies sensitivity and high angular resolution, will be a key instrument for this type of studies. The PdBI observations were part of a search for interstellar glycine, also carried out with the IRAM 30-m telescope and the Green Bank Telescope. We derive a 3σ upper limit on the column density of glycine of 1×1015 cm−2 per 2″×3″ beam in the Orion Hot Core and Compact Ridge. More... »

PAGES

45-51

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10509-007-9684-4

DOI

http://dx.doi.org/10.1007/s10509-007-9684-4

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1036716461


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