Variability of young stars [Elektronische Ressource] / von Claus-Michael Scheyda

VARIABILITY OF YOUNG STARS DISSERTATION ZUR ERLANGUNG DES GRADES DOKTOR DER NATURWISSENSCHAFTEN FAKULTÄT FÜR PHYSIK UND ASTRONOMIE RUHR-UNIVERSITÄT BOCHUM VON CLAUS-MICHAEL SCHEYDA BOCHUM BOCHUM 2010 1. Gutachter: Prof. Dr. Rolf Chini; Bochum 2. Gutachter: Prof. Dr. Ralph Neuhäuser; Jena Datum der Disputation: 17.09.2010 VARIABILITY OF YOUNG STARS PHD THESIS FACULTY OF PHYSICS AND ASTRONOMY RUHR-UNIVERSITY BOCHUM CLAUS-MICHAEL SCHEYDA BOCHUM BOCHUM 2010 First referee: Prof. Dr. Rolf Chini; Bochum Second referee: Prof. Dr. Ralph Neuhäuser; Jena Date of defense: 09/17/2010 For my father TABLE OF CONTENTS Chapter I – Introduction & Overview ............................................................................................... 1 1.1 Star Formation .............................................................................................................. 1 1.2 Variable Young Stellar Objects ............... 2 1.2.1 TTauri Stars ..................................................................................................... 2 1.2.2 HAeBe Stars ..... 2 1.3 The Omega Nebula ...................................................................................................... 3 1.4 This Thesis ...................................................................................................................... 4 Chapter II – Observation & Data Reduction .................. 5 2.1 Observations ............................