High resolution submillimeter observations of massive protostars

C. L. Brogan, T. R. Hunter, R. Indebetouw, C. J. Chandler, Y. L. Shirley, R. Rao, A. P. Sarma

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)53-57
Number of pages5
JournalAstrophysics and Space Science
Volume313
Issue number1-3
DOIs
StatePublished - Jan 1 2008

Keywords

  • Astrochemistry
  • Stars: formation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Brogan, C. L., Hunter, T. R., Indebetouw, R., Chandler, C. J., Shirley, Y. L., Rao, R., & Sarma, A. P. (2008). High resolution submillimeter observations of massive protostars. Astrophysics and Space Science, 313(1-3), 53-57. https://doi.org/10.1007/s10509-007-9598-1