Getting the most out of MOST satellite data: Using wavelets to analyze young star variability?
University of Toronto
Young stars of type T Tauri show complex variability. Particularly interesting, but poorly explained, are seemingly chaotic changes resulting from accretion processes in the closest vicinity of the star. MOST satellite observations provide continuous time coverage and enable analyses of variations taking place on time scales of hours to days which have so far been difficult to study due to day/night cycles. Wavelets are a particularly useful tool for analysis of semi-periodic and stochastic noise variations. Their use will be illustrated by two recently studied cases of the nearest and brightest T Tauri star, TW Hya, and a Be/Ae star observed during the Sigma Ori campaign, HD 37806.
Date: Jeudi, le 25 mars 2010 Heure: 11:30 Lieu: Université de Montréal Pavillon Roger-Gaudry, Local D-460 Contact: Anthony Moffat