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arXiv · 0909.3828

The Spitzer c2d Survey of Nearby Dense Cores VII: Chemistry and Dynamics in L43

Jo-Hsin Chen·Neal J. Evans II·Jeong-Eun Lee·Tyler L. Bourke
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Abstract

We present results from the Spitzer Space Telescope and molecular line observations of 9 species toward the dark cloud L43. The Spitzer images and molecular line maps suggest it has a starless core and a Class I protostar evolving in the same environment. CO depletion is seen in both sources, and DCO+ lines are stronger toward the starless core. With a goal of testing the chemical characteristics from pre- to protostellar stages, we adopt an evolutionary chemical model to calculate the molecular abundances and compare with our observations. Among the different model parameters we tested, the best-fit model suggests a longer total timescale at the pre-protostellar stage, but with faster evolution at the later steps with higher densities.

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Jo-Hsin Chen, Neal J. Evans II, Jeong-Eun Lee, Tyler L. Bourke. 2009-09-21. The Spitzer c2d Survey of Nearby Dense Cores VII: Chemistry and Dynamics in L43. https://doi.org/10.1088/0004-637x/705/2/1160

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