Dynamics Of The Open Cluster NGC 188: A Comparison To An N-body Simulation Of M67

Details Dynamics Of The Open Cluster NGC 188: A Comparison To An N-body Simulation Of M67 Dynamics Of The Open Cluster NGC 188: A Comparison To An N-body Simulation Of M67

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5812g&link_type=abstract

American Astronomical Society, AAS Meeting #211, #58.12; Bulletin of the American Astronomical Society, Vol. 39, p.835

Mathematics

Probability

Scientific paper

We present a detailed dynamical study of the old (7 Gyr) open cluster NGC 188. Our combined radial-velocity data set spans a baseline of 35 years, a magnitude range of 12≤V≤16.5, and a 1º diameter region on the sky. Our magnitude limits include solar-mass main-sequence stars, subgiants, giants, and blue stragglers, and our spatial coverage extends radially to 11.5 core radii. We have measured radial velocities for 1014 stars in the direction of NGC 188 with a precision of 0.4 km s-1, and have calculated radial-velocity membership probabilities for stars with ≥ 3 measurements. We find 420 stars to be high-probability cluster members, including 137 spectroscopic binaries. These detectable binaries all have orbital periods of less than 104 days, and thus are hard. We have derived orbit solutions for 67 member binary stars, and use our 35 main-sequence binaries with orbit solutions to compare the eccentricity and period distributions with simulated observations of the Hurley et. al. (2005) model of M67 (4.5 Gyr). We also compare the spatial distributions of cluster member populations and the radial-velocity dispersion of single cluster members.
This work is funded by the Wisconsin Space Grant Consortium and the National Science Foundation grant number AST-0406615

Affiliated with

Also associated with

No associations

Rating

Dynamics Of The Open Cluster NGC 188: A Comparison To An N-body Simulation Of M67 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dynamics Of The Open Cluster NGC 188: A Comparison To An N-body Simulation Of M67, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamics Of The Open Cluster NGC 188: A Comparison To An N-body Simulation Of M67 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1478008