The Dynamics of Outflows from Young Stellar Objects

Details The Dynamics of Outflows from Young Stellar Objects The Dynamics of Outflows from Young Stellar Objects

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999sf99.proc..295r&link_type=abstract

Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21 - 25, 1999, Editor: T. Nakamoto, Nobeyam

Physics

Scientific paper

We have carried out high sensitivity, uniform spatial resolution observations of a sample of bipolar molecular outflows from luminous (Lbol > 100 Lodot) young stellar objects (YSOs) at a single distance. Maps in 12CO and 13CO J=2rightarrow 1 and 12CO J=1rightarrow 0 enable us to make careful corrections for spatial variations in excitation temperature and optical depth, which often are the source of uncertainty in calculations of mass and energy from molecular line information. This constitutes a homogeneous sample of outflows with which the statistical properties, such as the correlations between outflow force and power with source bolometric luminosity can be tested. Here we present a preliminary analysis of the relationship between outflow mechanical luminosity and source bolometric luminosity using this new sample, and show that contrary to existing studies we find no clear evidence for a correlation between these properties for luminous YSOs.

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