skip to main content

Title: A perfect starburst cluster made in one go: The NGC 3603 young cluster

Understanding how distinct, near-spherical gas-free clusters of very young, massive stars shape out of vast, complex clouds of molecular hydrogen is one of the biggest challenges in astrophysics. A popular thought dictates that a single gas cloud fragments into many newborn stars which, in turn, energize and rapidly expel the residual gas to form a gas-free cluster. This study demonstrates that the above classical paradigm remarkably reproduces the well-observed central, young cluster (HD 97950) of the Galactic NGC 3603 star-forming region, in particular, its shape, internal motion, and mass distribution of stars naturally and consistently follow from a single model calculation. Remarkably, the same parameters (star formation efficiency, gas expulsion timescale, and delay) reproduce HD 97950, as were found to reproduce the Orion Nebula Cluster, Pleiades, and R136. The present results therefore provide intriguing evidence of formation of star clusters through single-starburst events followed by significant residual gas expulsion.
Authors:
 [1] ;  [2]
  1. Argelander-Institut für Astronomie, Auf dem Hügel 71, D-53121 Bonn (Germany)
  2. Helmholtz-Institut für Strahlen-und Kernphysik, Auf dem Hügel 71, D-53121 Bonn (Germany)
Publication Date:
OSTI Identifier:
22356726
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 787; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; COSMIC GASES; EFFICIENCY; GALAXIES; HYDROGEN; INTERSTELLAR SPACE; MASS DISTRIBUTION; MOLECULES; NEBULAE; SPHERICAL CONFIGURATION; STAR CLUSTERS; STARS