Rotating Molecular Gas Disks around Protostellar Jet Sources

Details Rotating Molecular Gas Disks around Protostellar Jet Sources Rotating Molecular Gas Disks around Protostellar Jet Sources

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999alma.confe..75w&link_type=abstract

Science with the Atacama Large Millimeter Array (ALMA), Associated Universities, Inc., held October 6-8, 1999 at Carnegie Instit

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Molecular Dust, Protostellar, Accretion, Excitation, Rotation, Jets, Outflow

Scientific paper

Large millimeter arrays such as ALMA provide a means to map the warm dust and molecular gas in regions encircling protostellar accretion zones. Line observations, in particular, provide the means not only for excitation studies but for kinematical studies of the protostellar environment. Radio and millimeter interferometers are already being used to trace infall, rotation, and outflow of dense gas. Recently, flattened large (~10,000 AU) molecular gas disks around protostars were detected and show strong evidence for rotation (Zhang et al. 1998, Wiseman et al. 1998). We present here our most recent VLA ammonia maps showing flattened gas disks with velocity gradients indicative of rotation around the sources of the jets HH111, HH211 and HH212. We discuss interaction with the jets and outflows. We also discuss how line maps from ALMA and radio interferometers complement each other. Wiseman, J., Wootten, A., Zinnecker, H., & McCaughrean, M. 1998, in The Physics and Chemistry of the Interstellar Medium, abstract book of the 3rd Cologne-Zermatt Symposium, ed. V. Ossenkopf Wiseman, J., Fuller, G., & Wootten, A. 1999, in preparation Zhang, Q., Hunter, T., & Sridharan, T. 1998, ApJ, 505, L151

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