SMA 850 micron Observations of CepA East -- Many Protostars, no Disk

Details SMA 850 micron Observations of CepA East -- Many Protostars, no Disk SMA 850 micron Observations of CepA East -- Many Protostars, no Disk

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20718417b&link_type=abstract

American Astronomical Society Meeting 207, #184.17; Bulletin of the American Astronomical Society, Vol. 37, p.1474

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Scientific paper

We present high angular resolution (1'' to 2'') observations toward CepheusA-East taken with the Submillimeter Array (SMA) in its compact configuration. The observations were centered near 333, 343, 336.5, and 346.5 GHz; each with 2 GHz of bandwidth. With the high angular resolution afforded by the SMA, the previously identified single dish submm source has been resolved into a number of individual components. The strongest submm emission is detected in the vicinity of HW2 and a distinct submm source is also coincident with HW3c. Surprisingly few of the other cm-λ sources are coincident with distinct submm emission, while several submm cores are detected that are not coincident with cm-λ emission. Numerous molecular lines are detected toward the HW2 region and HW3c, including a wide range of organic molecules as is typical of hot cores. Compared to other hot cores observed with similar resolution, CepA-HW2 has unusually strong SO2, and weaker lines of organic species like methyl formate. The different molecular species show a wide range of kinematic behavior toward CepA, suggesting the presence of several distinct protostars and outflows in the vicinity of HW2. No evidence is seen for the rotating disk recently reported by Patel et al. (2005).

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