Infrared and Millimetric Study of the Young Outflow Cepheus E

The Cepheus E outflow has been studied in the mid and far infrared using theISO CAM and LWS instruments, and at millimetric wavelengths using OVRO. In thenear and mid-IR, its morphology is similar to that expected for a jet drivenoutflow, where the leading bow shocks entrain and accelerate the surroundingmolecular gas. As expected, fine structure atomic/ionic emission lines arisefrom the bow shocks, at both the Mach Disk and the stagnation tip, whereJ-shocks are dominant. The H2, H2O and CO molecular emission could arisefurther `downstream' at the bow shock wings where the shocks (v = 8-35 km/s)are oblique and more likely to be C-type. The 13CO emission arises fromentrained molecular gas and a compact high velocity emission is observed,together with an extended low velocity component that almost coincidesspatially with the H2 near-IR emission. The millimetric continuum emissionshows two sources. We identify one of them with IRAS 23011+6126, postulating isthe driver of the Cepheus E outflow; the other, also an embedded source, islikely to be driving one of other outflows observed in the region.Comment: 47 pages, 13 figure