BIPOLAR JETS FROM EXTREMELY YOUNG STARS OBSERVED IN MOLECULAR-HYDROGEN EMISSION

Images in the 1-0 S(1) line of molecular hydrogen at 2.12 mu m of six extremely young stellar objects are presented: NGC 1333 IRAS 2 and 4, L1551 IRS 5 and NE, L1634, and IRAS 08076-3556. In an cases, we find H -2 1-0 S(1) line emission from bipolar jets of various degrees of coll imation. In two sources (L1634 and IRAS 08076-3556), morphological arg uments strongly suggest that previously made identifications of the ou tflow source with near-infrared sources have to be revised. In L1634 w e find evidence for a second, previously undetected outflow. IRAS 0807 6-3556 may also have a second outflow, although our data are less conc lusive. The outflow in L1551 NE and the double outflow associated with NGC 1333 IRAS 2 are confirmed by our imaging data. Multiple outflow a ctivity is seen toward all of the regions imaged here. We speculate th at the formation of small groups of stars within one outlfow lifetime is a rather common occurrence.