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Correlations Between X-ray Emission and Accretion Tracers in a COUP Subsample of T Tauri Stars

B. Silva, R. Azevedo, J. F. Gameiro, D. F. M. Folha

Abstract
Using data from FLAMES-GIRAFFE/VLT in two different bands (optical and infrared) we derived for 60 stars at least one accretion tracer. The accretion tracers used were: CaII infrared triplet, HeI 5875, Na-D and optical veiling. All these stars are from a subsample of COUP; therefore their X-rays properties are well known. In this work we correlate the (COUP) X-ray properties of these classical T Tauri stars with their spectral accretion tracers, finding that there is a correlation between the X-ray hardness ratio and the optical veiling.

SIMBOL-X: FOCUSING ON THE HARD X-RAY UNIVERSE: Proceedings of the 2nd International Simbol-X Symposium.

AIP Conference Proceedings
Volume 1126, Page 373
2009 May

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Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia