Shocks and PDRs in an intermediate mass star forming globule: the case of IC1396N

Molinari, S.; Saraceno, P.; Nisini, B.; Giannini, T.; Ceccarelli, C.; White, G. J.; Caux, E. and Palla, F. (1998). Shocks and PDRs in an intermediate mass star forming globule: the case of IC1396N. In: Star Formation with the Infrared Space Observatory, 24-26 Jun 1997, Lisbon, Portugal.

URL: http://www.aspbooks.org/publications/132/390.pdf

Abstract

The dark globule IC1396N is a typical example of a star formation process induced by radiation driven implosion due to the strong UV field from a nearby O6 star. The IRAS source embedded in the globule and its associated molecular outflow have been observed with the Long Wavelength Spectrometer (LWS) on ISO revealing an extremely rich spectrum including: CO rotational lines from J=14-13 up to J=28-27, rotational lines from ortho-H2O, OH lines involving the first four rotational levels of both ladders, atomic (OI 63μm, OI 145μm) and ionic (CII 157μm, OIII 52μm, OIII 88μm) lines. A complex picture arises, where an externally illuminated PDR coexists with strong C-shocks within IC1396N and whose origin is not clear.

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