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Emission line variability in accretion disks

Grant number: 02/00369-0
Support type:Scholarships abroad - Research
Effective date (Start): June 13, 2002
Effective date (End): June 23, 2002
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
Principal Investigator:Marcos Perez Diaz
Grantee:Marcos Perez Diaz
Home Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Local de pesquisa : Cerro Tololo Inter-American Observatory, Chile  


Time-resolved spectrophotometric observations of bright, steady state accretion disks in Cataclysmic Variables (CVs) are proposed aiming the study of the fast sthocastic variability of these systems. We plan to investigate the behavior of the recombination line profile and total flux and compare the properties of flickering flares in the lines with the continuum source. The line profile variability will be analyzed in detail using Doppler Imaging techniques with the goal of locate and quantify the source(s) of line flickering in the accretion flow. Dynamical solutions for the binary system will be also obtained. (AU)