Granzer, Thomas

Contact Email: tgranzer@aip.de
Institute: Astrophysikalisches Institut Potsdam (AIP)
An der Sternwarte 16 D-14482 Germany
First Coauthor: Klaus G. Strassmeier
Institute: AIP
Presenting Thesis: Yes
Subject Area: Star Clusters, Associations
Waveband: Optical
Technique: Computational Astrophysics
Presentation: Poster Display
Title: Spotted Stars in the Pleiades and the Orion Nebular Cluster
Abstract: We present the results of extensive MHD simulations aiming to predict star spot patterns on stars in two well-known stellar clusters, the Pleiades (100 Myr) and the Orion Nebular Cluster (2 Myr). The emergence of thin magnetic flux tubes is studied from their origin at the base of the convective zone up to the photosphere of the stars considered. The mass/rotational grid of the stellar models is wide enough to cover all stellar types where theory predicts the possibility of star spot formation. In particular, masses between 4.0 M$_\odot$and 0.4 M$_\odot$and rotational rates from 0.25 $\Omega_\odot$ to 25 $\Omega_\odot$ are considered.
Special emphasis is given to the differences of the results for the two clusters and, following from these differences, possible observational strategies are outlined.