Spatially Resolved Spectroscopy of HR 4796A's Dust Ring

Details Spatially Resolved Spectroscopy of HR 4796A's Dust Ring Spatially Resolved Spectroscopy of HR 4796A's Dust Ring

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004hst..prop10168w&link_type=abstract

HST Proposal ID #10168

Computer Science

Hst Proposal Id #10168 Ism

Scientific paper

HST's high-contrast capabilities provide exciting imaging of circumstellar debris disks with complex structures. In particular, broad-band imaging using the coronagraphs in NICMOS and STIS has elucidated the disk morphology of HR 4796A exquisitely, but can only provide colors, not detailed compositional information on its dust. With spectra, we will measure the detailed albedo of the disk dust over a large wavelength range and search for interstellar medium-like molecules and water ice. We will also use our spatially resolved spectra for very high angular resolution profiles of the disk width to constrain models for planets circling inside the dust. We have demonstrated in a previous program how to use STIS for spatially resolved disk spectroscopy. We now propose to use our technique to study HR 4796A.

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