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H 2 Ir Emission in Omc at High Spatial Resolution

The Orion Molecular Cloud (OMC) is a region in which massive stars are forming. Whilst all stars undergo a period of violent ejection of material during early stages of their evolution, massive stars can have a particularly strong impact on nearby molecular clouds through shocks caused by fast outtows and the intense UV radiation emitted by the star. The region for which observations are reported here covers material to the north of the Trapezium stars in a zone to the south east of IRc2 and the Becklin-Neugebauer Object, which is known to contain very complex structures. The rovibrational line emission of vibrationally excited H 2 is a probe of strongly perturbed gas. It shows no exception to the rule of complexity in this region. A detailed analysis of this shows that there are preferred spatial scales to the structures and that contrary to other regions of the interstellar medium the structure is not a-fractal.