A parsec-scale flow associated with the IRAS 16547-4247 radio jet

Details A parsec-scale flow associated with the IRAS 16547-4247 radio jet A parsec-scale flow associated with the IRAS 16547-4247 radio jet

2003-07-24

arxiv.org/abs/astro-ph/0307432v1

Astrophys.J.594:L131,2003

Astronomy and Astrophysics

Astrophysics

Accepted for publication in ApJL, 10 pages, 2 figures

Scientific paper

10.1086/378626

IRAS 16547-4247 is the most luminous (6.2 x 10^4 Lsun) embedded young stellar object known to harbor a thermal radio jet. We report the discovery using VLT-ISAAC of a chain of H_2 2.12 um emission knots that trace a collimated flow extending over 1.5 pc. The alignment of the H_2 flow and the central location of the radio jet implies that these phenomena are intimately linked. We have also detected using TIMMI2 an isolated, unresolved 12 um infrared source towards the radio jet . Our findings affirm that IRAS 16547-4247 is excited by a single O-type star that is driving a collimated jet. We argue that the accretion mechanism which produces jets in low-mass star formation also operates in the higher mass regime.

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