High resolution submillimeter observations of massive protostars

Details High resolution submillimeter observations of massive protostars High resolution submillimeter observations of massive protostars

Jan 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ap%26ss.313...53b&link_type=abstract

Astrophysics and Space Science, Volume 313, Issue 1-3, pp. 53-57

Astronomy and Astrophysics

Astrophysics

6

Astrochemistry, Stars: Formation

Scientific paper

We describe results from recent Submillimeter Array observations of massive protostellar objects (CepheusA-East, NGC7538 IRS1, and G5.89-0.39) with resolutions ranging from 0.8″ to 2″. A wide range of spectral and continuum properties are observed, with one unifying theme: at these resolutions all of the studied sources reveal multiple submillimeter cores. Some are observed to have cm-wavelength counterparts, and others not, suggesting a range of evolutionary stages coexisting in close proximity. In the presence of such complexity and multiplicity of sources, these data suggest that the interpretation of diagnostics such as kinematic velocity gradients and temperatures that are strongly dependent on spatial resolution should be approached cautiously.

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