EPoS Contribution
EPoS Contribution
Star Formation and Globules in the Spectacular Massive Star Formation Region Cygnus OB2

Patrick M. Hartigan
Rice University, Houston, TX, USA
Although the Cygnus OB2 association is by far the dominant region of massive star formation within 3 kpc of the Sun, hosting over 120 O stars, one of the most massive stars in the galaxy, over 1000 X-ray sources, a galactic chimney, and a runaway O star, the young stellar population of the region has not been studied thoroughly owing to high extinction along the line of sight and the large area covered by the association. Using the large-format NEWFIRM camera at KPNO in H_2, we have mapped a 2-degree square region centered on the main OB cluster, and have uncovered dozens of jets, cometary globules, and nearly a thousand candidate classical T Tauri stars. The observations provide a detailed snapshot of how a massive star formation region appears once it is several million years old. The presentation will summarize evidence for fluid dynamical instabilities operating in globules, and discuss the status of an ongoing program to obtain spectral classifications for known and suspected cluster members.
Collaborators:
I. Cleeves, University of Michigan, USA
Suggested Session: Massive Stars, Molecular Clouds