THE STRUCTURE AND DYNAMICAL STATE OF ORION AND OTHER YOUNG STELLAR CLUSTERS

1. THE STRUCTURE AND DYNAMICAL STATE OF ORIONAND OTHER YOUNG STELLAR CLUSTERS MYStIX = Massive Young Star Forming Complex Study in Infrared and X-ray Michael A. Kuhn1, Eric D. Feigelson1, Konstantin V. Getman1, Adrian Baddeley2, LeisaK. Townsley1, Patrick S. Broos1, Matthew S. Povich3, Kevin L. Luhman1, Heather A. Busk1, Tim Naylor4, Robert R. King4, Gordon P. Garmire1 1Pennsylvania State University, USA, 2University of Western Australia, Australia 3California State Polytechnic University, USA, 4University of Exeter, UK Data available on astro-ph and at www.astro.psu.edu/mystix More MYStIX: Talk by Eric Feigelson, Poster by Konstantin Getman

2. Finding clusters of young stars using “finite mixture models” Layered structure to the Orion Nebula X-ray Selected IRE Selected

3. Typical Subcluster Properties Strong relation between core radius and central density. Similar to results interpreted by Pfalzner et al. (2009) as cluster expansion. Typical cluster cores have r=0.18 pc. Dynamical properties of subclusters. Embedded Subclusters tend to be smaller