GAMMA-RAY LINES FROM THE ORION COMPLEX

We show that the 4.44 and 6.13 MeV line emission observed with COMPTEL from Orion is consistent with gamma-ray spectra consisting of a mixture of narrow and broad lines or spectra containing only broad lines. We employed several accelerated particle compositions and showed that the current COMPTEL data in the 3-7 MeV region alone cannot distinguish between the various possibilities. However, the COMPTEL upper limits in the 1-3 MeV band favor a composition similar to that of the winds of Wolf-Rayet stars of spectral type WC. The power dissipated by the accelerated particles at Orion is about 4 x 10(38) ergs s(-1). These particles are not expected to produce significant amounts of Al-26.