Optical and Near-Infrared Shocks in the L988 Cloud Complex

We have searched the Lynds 988 dark cloud complex for optical (Hα and [Sii]) and near-IR (H2 2.12 µm) shocks from protostellar outflows. We find 20 new Herbig-Haro objects and 6 new H2 shocks (MHO objects), 3 of which are cross detections. Using the morphology in the optical and near-IR, we connect several of these shocks into at least 5 distinct outflow systems and identify their source protostars from catalogs of infrared sources. Two outflows in the cloud, from IRAS 21014+5001 and IRAS 21007+4951, are in excess of 1 pc in length. The IRAS 21007+4951 outflow has carved a large cavity in the cloud through which background stars can be seen. Also, we have found an optical shock which is the counterflow to the previously discovered “northwest outflow ” from LkHα 324SE. Subject headings: ISM: Herbig-Haro objects – ISM: jets and outflows – ISM: individual (Lynds 988) – stars: formation 1