Emission line variability in accretion disks

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

Abstract

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)