The progeny of stellar dynamics and stellar evolution within an N-body model of NGC 188

Aaron M. Geller, Jarrod R. Hurley, Robert D. Mathieu

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Scopus citations


We present a direct N-body simulation modeling the evolution of the old (7 Gyr) open cluster NGC 188. This is the first N-body open cluster simulation whose initial binary population is directly defined by observations of a specific open cluster: M35 (150 Myr). We compare the simulated color-magnitude diagram at 7 Gyr to that of NGC 188, and discuss the blue stragglers produced in the simulation. We compare the solar-type main-sequence binary period and eccentricity distributions of the simulation to detailed observations of similar binaries in NGC 188. These results demonstrate the importance of detailed observations in guiding N-body open cluster simulations. Finally, we discuss the implications of a few discrepancies between the NGC 188 model and observations and suggest a few methods for bringing N-body open cluster simulations into better agreement with observations.

Original languageEnglish (US)
Title of host publicationStar clusters
Subtitle of host publicationbasic galactic building blocks throughout time and space
PublisherCambridge University Press
Number of pages6
ISBN (Print)9780521764995
StatePublished - 2009

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221


  • Binaries: spectroscopic
  • Blue stragglers
  • N-body simulations
  • Open clusters and associations: individual (NGC 188)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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