Testi, Leonardo and Sargent, Anneila I. and Olmi, Luca and Onello, Joseph S. (2000) Star Formation in Clusters: Early Subclustering in the Serpens Core. Astrophysical Journal, 540 (1). L53-L56. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20190506-104023129
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Abstract
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.
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| 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. | ||||||||||||
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| Subject Keywords: | ISM: clouds—radio continuum: ISM—stars: formation | ||||||||||||
| Issue or Number: | 1 | ||||||||||||
| Record Number: | CaltechAUTHORS:20190506-104023129 | ||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190506-104023129 | ||||||||||||
| Official Citation: | Leonardo Testi et al 2000 ApJ 540 L53 | ||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
| ID Code: | 95244 | ||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||
| Deposited On: | 06 May 2019 17:46 | ||||||||||||
| Last Modified: | 03 Oct 2019 21:11 |
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