Transcending Voyager: A Deeper Look at Neptune's Ring-Moon System

Details Transcending Voyager: A Deeper Look at Neptune's Ring-Moon System Transcending Voyager: A Deeper Look at Neptune's Ring-Moon System

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004hst..prop10398s&link_type=abstract

HST Proposal ID #10398

Computer Science

Hst Proposal Id #10398 Solar System

Scientific paper

We will use the High Resolution Channel {HRC} of ACS to study the inner rings, arcs and moons of Neptune with a sensitivity that exceeds that achieved by Voyager 2 during its 1989 flyby. Our study will reveal any moons down to V magnitude 25.5, to address a peculiar truncation in the size distribution of inner moons and to look for the "shepherds" and source bodies for Neptune's dusty rings. {For comparison, Neptune's smallest known moon is Naiad, at magnitude 23.9}. Recent ground-based studies show that the mysterious arcs in the Adams Ring continue to shift and change, and may be fading away entirely. We will obtain the visual-band data uniquely necessary to determine whether the arcs are fading. Long-term monitoring of the arcs at high resolution and sensitivity will reveal their gradual changes more clearly and enable us to assess the role of Galatea, whose resonances are widely believed to confine the arcs.

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