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Published May 1, 2011 | Published
Journal Article Open

The Precession of the Herbig-Haro 111 Flow in the Infrared


We present Spitzer Infrared Array Camera images of the Herbig-Haro (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 ~1 M_☉ stars (one of them being the HH 111 source), in a circular orbit with a separation of ~186 AU, would produce the mirror symmetric pattern seen in the outflow.

Additional Information

© 2011 American Astronomical Society. Received 2011 February 11; accepted 2011 March 29; published 2011 April 11. This work is based in part on observations made with the Spitzer Space Telescope which is operated by the Jet Propulsion Laboratory, California Institute of Technology under NASA contract 1407. The work of A.R. and V.L. was supported by the CONACyT grants 61547, 101356, and 101975.

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Published - NoriegaCrespo2011p15495Astrophys_J_Lett.pdf


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