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Proper Motions of Stellar Jets as Observed with HST: The Movies

Hartigan, P. M.

The brightest stellar jets are close enough that they exhibit definite proper motions over a period of a few years when observed with the Hubble Space Telescope (HST). Results for the HH 1, HH 34, HH 47, and HH 111 jets, based on H alpha and [S II] HST images separated by about five years, are now available. A new interpolation algorithm for movin…

Multipolar Bubbles, Point-Symmetry, and Jets in Dying Stars

Sahai, R.; Morris, M. R.

The imaging of young planetary and pre-planetary nebulae (YPNe and PPNe) with unprecedented high angular resolution and dynamic range using the Hubble Space Telescope (HST), has shown that most of these objects are highly aspherical, with complex multipolar morphologies. The complexity, organization and symmetry of the morphological structures has…

Eta Carinae: Bullet Streams and Colliding Wind Shocks

Currie, D. G.

Eta Carinae, the most massive and most luminous star in our Galaxy, erupted in 1842 with an energy rivaling a supernova. It ejected approximately two solar masses of material to form an extended bipolar nebula (the homunculus), a variety of massive ``bullets'' (NN and NS knots and the South Bar) and the ``spikes'' (long narrow strings of bullets).…