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arXiv · 1103.5919

The precession of the HH 111 flow in the infrared

A. Noriega-Crespo·A. C. Raga·V. Lora·K. R. Stapelfeldt·S. J. Carey
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Abstract

We present Spitzer IRAC images of the HH 111 outflow, that show a wealth of condensations/knots in both jet and counterjet. Studying the positional distribution of these knots, we find very suggestive evidence of a mirror symmetric pattern in the jet/counterjet flow. We model this pattern as the result of an orbital motion of the jet source around a binary companion. From a fit of an analytic, ballistic model to the observed path of the HH 111 system, we find that the motion in a binary with two approx. 1 Msolar stars (one of them being the HH 111 source), in a circular orbit with a separation of approx. 186 AU would produce the mirror symmetric pattern seen in the outflow.

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A. Noriega-Crespo, A. C. Raga, V. Lora, K. R. Stapelfeldt, S. J. Carey. 2011-03-30. The precession of the HH 111 flow in the infrared. https://doi.org/10.1088/2041-8205%2F732%2F1%2Fl16

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