Coronagraphic Imaging of Debris Disks Containing Gas

Details Coronagraphic Imaging of Debris Disks Containing Gas Coronagraphic Imaging of Debris Disks Containing Gas

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop11596r&link_type=abstract

HST Proposal ID #11596. Cycle 17

Physics

Scientific paper

We recently found a new sample of edge-on debris disks using the Spitzer Space Telescope. These disks are particularly valuable because they have observable circumstellar gas as well as dust. They double the small number of debris disks that can be used to study gas-dust interactions in optically-thin disks, as well as the evolution of circumstellar gas during the terrestrial planet-forming phase. We propose HST-ACS coronagraphic imaging of the two closest disks from our sample, in order to image light scattered from the dust disks in a broad optical bandpass. These observations will provide a wealth of information about the disks, including their sizes, radial surface brightness profiles, and basic morphologies {ring-like or smooth disk}. They may also reveal dust structures {e.g. clumps} that are often seen in optical images of debris disks and may be generated by the influence of unseen planets. This proposed program is a crucial step towards full characterization of the circumstellar material in two important debris disks.;

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