2004/06/30 by M. Tafalla, J. Santiago, D. Johnstone +1 · 2 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1051/0004-6361:200400015
published as Astron.Astrophys. 423 (2004) L21-L24 · 5pages, 3 figures. Accepted by Astronomy and Astrophysics Letters. v2 clarfies relation with HH390 thanks to private communication from John Bally and Josh Walawender
arxiv created 2004/07/02 · openalex publication_date 2004/07/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
We present the first case of a highly collimated, extremely high velocity bipolar outflow in Taurus. It is powered by the low-luminosity (0.4 ) source IRAS 04166+2706 and contains gas accelerated up to 50 km s-1 with respect to the ambient cloud both toward the blue and the red (uncorrected for projection). At the highest velocities, the outflow collimation factor exceeds 20, and the gas displays a very high degree of spatial symmetry. This very fast gas presents multiple maxima, and most likely arises from the acceleration of ambient material by a time-variable jet-like stellar wind. When scaled for luminosity, the outflow parameters of IRAS 04166 are comparable to those of other extremely high velocity outflows like L1448, indicating that even the very quiescent star-formation mode of Taurus can produce objects powering very high energy flows ().