Emission line variability in accretion disks

Processo:	02/00369-0
Linha de fomento:	Bolsas no Exterior - Pesquisa
Vigência (Início):	13 de junho de 2002
Vigência (Término):	23 de junho de 2002
Área do conhecimento:	Ciências Exatas e da Terra - Astronomia - Astrofísica Estelar

Pesquisador responsável:	Marcos Perez Diaz
Beneficiário:	Marcos Perez Diaz

Instituição-sede:	Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brasil
Local de pesquisa :	Cerro Tololo Inter-American Observatory, Chile

Assunto(s):	Discos de acresção Espectroscopia
Resumo 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)