9532(  1) - 12/06/01 12:42  - [  1]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      9532
                                                       Version: 1
                                                       Check-in Date: 06-Dec-2001
                                                                      11:46:37

1.Proposal Title:
Testing the magnetically and line-driven disk wind models of winds in cataclysmic
variables
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2. Proposal For  3. Cycle
AR               11
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4. Investigators
                                                                                     Contact?
    PI: Daniel Proga                      JILA, University of Colorado
   CoI: Prof. Janet Drew                  Imperial College                              N
   CoI: Dr. Knox Long                     Space Telescope Science Institute             N
   CoI: Dr. Achim Feldmeier               Universitat Potsdam                           N

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5. Abstract

We propose a comprehensive program to study outflows from accretion disks in
cataclysmic variables (CVs). These binary stars have been extensively observed with
HST. Previous studies, including our own, show that such disks can produce winds
driven by line radiation pressure. However, despite great progress in both
observational and theoretical studies, many basic properties of the outflows are
still poorly known. For example, the mass-loss rates, and the roles of radiation
pressure versus magnetic forces in launching/accelerating/shaping the outflows, are
very uncertain. We will continue to use the multi-dimensional, time-dependent,
magneto-hydrodynamical code ZEUS to compute, from first principles, the structures
of winds driven from accretion disks by line radiation pressure with and without
magnetic fields. Results of the project will provide basic dynamical and kinematical
properties of disk winds. We will use these properties to calculate theoretical wind
diagnostics, such as line profiles, for direct comparison with UV observations taken
with HST.
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                                                9532(  1) - 12/06/01 12:42  - [  2]

            Summary Form for Proposal  9532

  Item                         Used in this proposal
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  Proposal Category            AR
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