Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-10-29
Astrophys.J. 632 (2005) 397-420
Astronomy and Astrophysics
Astrophysics
44 pages, 26 figures, Accepted to ApJ. Changes include extinction mapping, Monte Carlo field star modeling, and Nyquist sample
Scientific paper
10.1086/432460
We present an analysis of K-band stellar distributions for the young stellar clusters GGD 12-15, IRAS 20050+2720, and NGC 7129. We find that the two deeply embedded clusters, GGD 12-15 and IRAS 20050+2720, are not azimuthally symmetric and show a high degree of structure which traces filamentary structure observed in 850 micron emission maps. In contrast, the NGC 7129 cluster is circularly symmetric, less dense, and anti-correlated to 850 micron emission, suggesting recent gas expulsion and dynamical expansion have occured. We estimate stellar volume densities from nearest neighbor distances, and discuss the impact of these densities on the evolution of circumstellar disks and protostellar envelopes in these regions.
Allen Laura E.
Gutermuth Robert A.
Megeath Thomas S.
Myers Phil C.
Pipher Judith L.
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