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Cited by 243

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The Age Distribution of Massive Star Clusters in the Antennae Galaxies

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Fall, S. Michael, Chandar, Rupali, Whitmore, Bradley C.·2005·The Astrophysical Journal

Abstract

We determine the age distribution of star clusters in the Antennae galaxies (NGC 4038/9) for two mass-limited samples ( M > 3 × 10 4 M ☉ and M > 2 × 10 5 M ☉ ). This is based on integrated broadband UBVI and narrowband Hα photometry from deep images taken with the Hubble Space Telescope . We find that the age distribution of the clusters declines steeply, approximately as dN / d τ ∝ τ -1 . The median age of the clusters is ~10 7 yr, which we interpret as evidence for rapid disruption ("infant mortality"). It is very likely that most of the young clusters are not gravitationally bound and were disrupted near the times they formed by the energy and momentum input from young stars to the interstellar matter of the protoclusters. At least 20% and possibly all stars form in clusters and/or associations, including those that are unbound and short-lived.

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Metadata

Authors
Fall, S. M., Chandar, R., & Whitmore, B. C.
Venue
The Astrophysical Journal
Published
2005-09-12
Volume
631
Issue
2
Pages
L133-L136
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
OpenAlex
W2099338922
Cited by
243
References
1
FWCI
12.30
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: The Age Distribution of Massive Star Clusters in the Antennae Galaxies. https://app.cochat.ai/papers/10.1086/496878
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Fall, S. M., Chandar, R., & Whitmore, B. C. (2005). The Age Distribution of Massive Star Clusters in the Antennae Galaxies. The Astrophysical Journal. https://doi.org/10.1086/496878

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