Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published September 1, 2000 | Accepted Version + Published
Journal Article Open

Star Formation in Clusters: Early Subclustering in the Serpens Core


We present high-resolution interferometric and single-dish observations of molecular gas in the Serpens cluster-forming core. Star formation does not appear to be homogeneous throughout the core, but is localized in spatially and kinematically separated subclusters. The stellar (or protostellar) density in each of the subclusters is much higher than the mean for the entire Serpens cluster. This is the first observational evidence for the hierarchical fragmentation of protocluster cores suggested by cluster formation models.

Additional Information

© 2000 The American Astronomical Society. Received 2000 March 3; accepted 2000 May 24; published 2000 August 22. We thank Cathie Clarke and the referee, Paul Ho, for comments that much improved this Letter. The Owens Valley millimeter-wave array is supported by NSF grant AST 96-13717. Research on young star and disk systems is also supported by the Norris Planetary Origins Project and NASA's Origins of Solar Systems program (through grant NAGW-4030). The FCRAO observations were supported by NSF grant AST 97-25951. J. S. O. thanks the Cornell University Department of Astronomy for continuing support and warm hospitality.

Attached Files

Published - Testi_2000_ApJ_540_L53.pdf

Accepted Version - 0005522.pdf


Files (878.1 kB)
Name Size Download all
298.2 kB Preview Download
579.9 kB Preview Download

Additional details

August 19, 2023
October 20, 2023