Search for HH-objects and emission stars in star formation regions. VI. Herbig-Haro objects and emission stars in the region of the GM 1-64 and GM 2-4 nebulae

Three new Herbig-Haro and 12 emission stars, mainly belonging to the T Tau class, have been discovered in a study of the region of the GM 1-64 and GM 2-4 nebulae in the direction of the galactic anticenter. GM 1-64 and GM 2-4 are typical cometary nebulae illuminated by emission stars. In GM 2-4 the central star is surrounded by a dense dust envelope and is observed only in the IR. Two stellar-like sources which are bright in the IR are found in this same region and can be regarded as young, Class 1 stars. One of them (CPM 19) is surrounded by a compact group of fainter PMS objects. It is found that CPM 19 shows up clearly in the optical range and undergoes large amplitude brightness variations.