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|
|Lieu: ||Université de Montréal|
| ||Pavillon Roger-Gaudry, Local D-460|
|Contact: ||Anthony Moffat|