Probing Star Formation on Large Spatial Scales with WFCAM, SPITZER and SCUBA

Computer Science

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Scientific paper

Star formation across Orion and DR21/W75 is scrutinised with the aid of degree-sized near-, mid- and far-IR observations. JHK and narrow-band H2 1-0S(1) images from the wide-field camera WFCAM at UKIRT are compared to Spitzer images and extensive 850 micron SCUBA scan maps. Together these data give a complete picture of dynamical star formation: the H2 images reveal knots and bow shocks associated with hundreds of outflows; the WFCAM JHK and Spitzer photometry uncover a distributed population of young stars and young stellar clusters; and the SCUBA data trace dense, massive, pre-stellar cores that are in some regions the precursors to massive star forming clusters. With standard techniques we map the extinction, stellar content and clustering across these regions and consider the effect star formation has on the environment as a whole.

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