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arXiv · 2105.08410

Evolution of the atomic component in protostellar outflows

T. Sperling·J. Eislöffel·B. Nisini·T. Giannini·C. Fischer·A. Krabbe
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Abstract

We present SOFIA/FIFI-LS observations of three Class 0 and one Class I outflows (Cep E, HH 1, HH 212, and L1551 IRS5) in the far-infrared [O I]63mum and [O I]145mum transitions. Spectroscopic [O I]63mum maps enabled us to infer the spatial extent of warm, low-excitation atomic gas within these protostellar outflows. If proper shock conditions prevail, the instantaneous mass-ejection rate is directly connected to the [O I]63mum luminosity. In order to unravel evolutionary trends, we analysed a set of 14 Class 0/I outflow sources that were spatially resolved in the [O I]63mum emission. We compared these data with a sample of 72 Class 0/I/II outflow sources that have been observed with Herschel (WISH, DIGIT, WILL, GASPS surveys) without spatially resolving the [O I]63mum line.

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T. Sperling, J. Eislöffel, B. Nisini, T. Giannini, C. Fischer, A. Krabbe. 2021-05-18. Evolution of the atomic component in protostellar outflows. https://doi.org/10.1051/0004-6361%2F202040048

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