Molecular hydrogen flows along Ori A cloud

With this paper we aim to associate each flow with its progenitor and associated molecular core, so that the characteristics of the outflows and outflow sources can be established. We present wide-field near-infrared images of Orion A, obtained with the Wide Field Camera, WFCAM, on the United Kingdom Infrared Telescope.

Broad-band K and narrow-band H_2_ 1-0S(1) images of a contiguous ~8 square degree region are compared to mid-IR photometry from the Spitzer Space Telescope and (sub)millimetre dust-continuum maps obtained with the MAMBO and SCUBA bolometer arrays. Using previously-published H_2_ images, we also measured proper motions for H_2_ features in 33 outflows, and use these data to help associate flows with existing sources and/or dust cores.