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Constraints on Massive Star Formation: Cygnus OB2 was always an Association
Nicholas J. Wright, Richard J. Parker, Simon P. Goodwin +1
We examine substructure and mass segregation in the massive OB association Cygnus OB2 to better understand its initial conditions. Using a well understood Chandra X-ray selected sa…
Dynamical evolution of star forming regions
Richard J. Parker, Nicholas J. Wright, Simon P. Goodwin +1
We model the dynamical evolution of star forming regions with a wide range of initial properties. We follow the evolution of the regions' substructure using the Q-parameter, we sea…
Stellar Magnetic Dynamos and Activity Cycles
Nicholas J. Wright
Using a new uniform sample of 824 solar and late-type stars with measured X-ray luminosities and rotation periods we have studied the relationship between rotation and stellar acti…
The Ionized Nebula surrounding the Red Supergiant W26 in Westerlund 1
Nicholas J. Wright, Roger Wesson, Janet E. Drew +7
We present Hαimages of an ionized nebula surrounding the M2-5Ia red supergiant (RSG) W26 in the massive star cluster Westerlund 1. The nebula consists of a circumstellar shell or r…
UV-excess sources with a red/IR-counterpart: low-mass companions, debris disks and QSO selection
Kars Verbeek, Paul J. Groot, Simone Scaringi +13
We present the result of the cross-matching between UV-excess sources selected from the UV-excess survey of the Northern Galactic Plane (UVEX) and several infrared surveys (2MASS,…
The protoplanetary disks in the nearby massive star forming region Cygnus OB2
M. G. Guarcello, J. J. Drake, N. J. Wright +9
The formation of stars in massive clusters is one of the main modes of the star formation process. However, the study of massive star forming regions is hampered by their typically…