Disks around Main Sequence Stars: Cycle 4 Carryover

Details Disks around Main Sequence Stars: Cycle 4 Carryover Disks around Main Sequence Stars: Cycle 4 Carryover

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994hst..prop.5700b&link_type=abstract

HST Proposal ID #5700

Physics

Hst Proposal Id #5700 Interstellar Medium Circumstellar Matter

Scientific paper

We propose to examine the circumstellar disk around Beta Pictoris in order to determine its radial profile, and hence (in combination with IRAS data) to fix its albedo and temperature profile. These observations will extend previous extensive ground based coronagraphic investigations, and modelling by the authors. The data will enable us to understand better the central clearing in the disk and whether it is caused by sublimation or possible planet formation. The observations will also constrain the geometric properties of the disk including its inclination angle, vertical thickness and radial profile. Such observations limit models for the dynamics of the disk, including its velocity dispersion and hence mass distribution, and radial mass transport mechanisms. If density waves or clear zones are observed, they will give indirect evidence for the presence of massive bodies (planets) in the disk. The observations involve a judicious use of roll deconvolution and PSF modelling in order to allow the central stellar image and associated scattered light to be subtracted.

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