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5. SUMMARY

In this review, we presented results from parallel and other deep HST surveys. In Section 2, we summarized HST's morphological evidence for the evolution of different galaxy types for 19 ltapprox B ltapprox 27.5 mag: early types (E/S0's and Sabc's) evolved the least since z ltapprox 1, and late types (Sd/Irr's+Mergers) most rapidly. With better restframe ANN's, these results can be extended in the HDF and in future deep NICMOS and ACS images for B ltapprox 29 or H ltapprox 25 mag. This will cover the bulk of galaxies in the range z ~ 1-3. In Section 2 we summarized the WFPC2 F410M medium band searches for faint compact Lyalpha emitting objects at z appeq 2.4. The unexpected success of finding these objects provides an important confirmation of CDM theories, leads us to the question whether or not all high z star-forming systems are obscured by dust, and provides clues as to where the long sought Lyalpha emitting primeval galaxies may be hiding - in many small pieces. The existence of any larger scale structure at z appeq 2-3 clearly begs further investigation. In Section 3, the radio galaxy 53W002 provided important clues as to how a luminous early-type galaxy seen today may have formed. For this object at least, this may have started with jet-induced star-formation (with an aligned cone associated with its AGN), soon followed by the formation of an r1/4-like bulge and within a few Gyr by a massive disk, which may get destroyed later by subsequent mergers with the surrounding sub-galactic objects.

We thank Lee Armus, Nick Scoville, and Dave Burstein for helpful discussion, Doug VanOrsow, Harry Ferguson, Ray Lucas, and the ST ScI staff for their continuous help in these projects, and ST ScI for an inspiring HDF Symposium. Spectroscopic observations were obtained at the Multiple Mirror Telescope Observatory, a joint facility of the University of Arizona and the Smithsonian Institution. Kitt Peak National Observatory is operated by the Association of Universities for Research in Astronomy, Inc., under contract with the NSF. From 1994-1997, much of this work was supported by NASA grants GO-5308.0*-93A, GO-5985.0*-94A & GO-6610.0*-95A (to RAW and WCK), GO.2684.03.94A (to RAW), and GO-6609.0*-95A & AR.6385.01.95A (to RAW and SCO) from ST ScI, which is operated by AURA, Inc., under NASA contract NAS5-26555.

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