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Hubble Space Telescope Images and Follow-Up Spectroscopy of the Orion Nebula

O'Dell, C. R.; Wen, Zheng; Hester, J. J.

Recently published HST images of the Orion nebula reveal elephant-trunk structures, an apparent jet of material, and fine-scale structure in the Herbig-Haro object HH2, which is located at the base of an elephant trunk. High-resolution spectroscopy shows that the apparent jet is actually an ionization front seen edge-on. HH2 shows a complex struct…

Life at the Edge: Emission From the H II Region/Photodissociation Region Interface

Hester, J. J.

Preliminary results of an imaging survey of Galactic H II regions are presented and discussed with respect to the character of low-ionization potential lines and the structure of the H II region/photodissociation region (PDR) interface. A model of (S II) emission is developed according to the preliminary results and the interpretation of the struc…

The First Year With the Hubble Space Telescope

Maran, S. P.; Kinney, A. L.

supports many very significant scientific investigations during its early orbital operations, despite the limitations imposed by an unexpected spherical aberration in the primary mirror. These early results, gathered primarily with the HST cameras and spectrographs, are reviewed, with emphasis on extragalactic, stellar, and nebular astronomy.