MYStIX first results: Spatial structures of massive young stellar clusters
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Observations of the spatial distributions of young stars in star-forming regions can be linked to the theory of clustered star formation using spatial statistical methods. The MYStIX project provides rich samples of young stars from the nearest high-mass star-forming regions. Maps of stellar surface density reveal diverse structure and subclustering. Young stellar clusters and subclusters are fit with isothermal spheres and ellipsoids using the Bayesian Information Criterion to estimate the number of subclusters. Clustering is also investigated using Cartwright and Whitworth’s Q statistic and the inhomogeneous two-point correlation function. Mass segregation is detected in several cases, in both centrally concentrated and fractally structured star clusters, but a few clusters are not mass segregated.
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Kuhn, M.; Feigelson, E.; Getman, K.; Baddeley, Adrian; Broos, P.; Sills, A.; Bate, M.; Povich, M.; Luhman, K.; Busk, H.; Naylor, T.; King, R. (2014)The clusters of young stars in massive star-forming regions show a wide range of sizes, morphologies, and numbers of stars. Their highly subclustered structures are revealed by the MYStIX project’s sample of 31,754 young ...
Purcell, C.; Minier, V.; Longmore, S.; André, P.; Walsh, Andrew; Jones, P.; Herpin, F.; Hill, T.; Cunningham, M.; Burton, M. (2009)Context: Recent 1.2-mm continuum observations have shown the giant H II region NGC 3576 to be embedded in the centre of an extended filamentary dust-cloud. The bulk of the filament away from the H II region contains a ...
Feigelson, E.; Townsley, L.; Broos, P.; Busk, H.; Getman, K.; King, R.; Kuhn, M.; Naylor, T.; Povich, M.; Baddeley, Adrian; Bate, M.; Indebetouw, R.; Luhman, K.; McCaughrean, M.; Pittard, J.; Pudritz, R.; Sills, A.; Song, Y.; Wadsley, J. (2013)The Massive Young Star-Forming Complex Study in Infrared and X-ray (MYStIX) seeks to characterize 20 OB-dominated young clusters and their environs at distances d = 4 kpc using imaging detectors on the Chandra X-ray ...