THE STRUCTURE AND DYNAMICAL STATE OF ORIONAND OTHER YOUNG STELLAR CLUSTERS

Michael A. Kuhn1, Eric D. Feigelson1, Konstantin V. Getman1, Adrian Baddeley2, Leisa K. 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

MYStIX = Massive Young Star Forming Complex Study in Infrared and X-ray

More MYStIX: Talk by Eric Feigelson, Poster by Konstantin Getman

Data available on astro-ph and at www.astro.psu.edu/mystix

Finding clusters of young stars using “finite mixture models”

Layered structure to the Orion Nebula

X-ray SelectedIRE Selected

Typical Subcluster Properties

Embedded Subclusters tend to be smaller

Typical cluster cores have r=0.18 pc.

Strong relation between core radius and central density.

Similar to results interpreted by Pfalzner et al. (2009) as cluster expansion.

Dynamical properties of subclusters.