Updated version using S. Meyett's suggested changes.
----- Attempting Submission 2 (Fri Jun 08 16:02:43 GMT 2007) -----
Phase II Proposal 11125 (11125_draft_v2) successfully submitted.
----- Attempting Submission 3 (Fri Jun 08 16:04:45 GMT 2007) -----
It all checked out with no errors or warnings, so I don't know what this is about.
Previously submitted as proposal 498, using the ACS. Now, we use WFPC2.
Assigned ID: 1361
----- Attempting Submission 1 (Fri Feb 09 20:44:06 GMT 2007) -----
The Dynamical Evolution of Globular Clusters
Globular clusters evolve through dynamical interactions, with primordial binaries extending the time until core collapse by up to an order of magnitude, depending on the initial binary fraction. These dynamical interactions plus mass segregation causes the binary fraction to rise in the core but fall at larger radii. We hope to eventually test these broad predictions by comparing them to the binary properties for globular clusters at different states of evolution, defined by the ratio of their age to the dynamical relaxation time at the half-light radius. The most important unknown aspects in the modeling process are the initial conditions of binaries in the cluster. Here we propose to determine the initial binary fraction as a function of radius by studying three of the dynamically youngest globular clusters (NGC 5053, NGC 5466, and NGC 5897). The presence of binaries thickens the Main Sequence in a color-magnitude diagram, which can be detected with deep multicolor images.
For NGC 5053, NGC 5466 and NGC 5897, we will obtain off-center imaging observations in F606W (2 orbits per object) and F814W (4 orbits per object). For each of these three clusters, a single field will be imaged.
RESOLVED STELLAR POPULATIONS
12
false
0.0
false
false
false
false
false
false
SUPPORTED
STELLAR CLUSTER
GLOBULAR CLUSTER
This object was generated by the targetselector and retrieved from the NED database.
J2000
13 16 27.0000
+17 45 14.00
J2000
STELLAR CLUSTER
GLOBULAR CLUSTER
This object was generated by the targetselector and retrieved from the NED database.
J2000
14 05 27.3000
+28 35 6.00
J2000
STELLAR CLUSTER
GLOBULAR CLUSTER
This object was generated by the targetselector and retrieved from the NED database.
J2000
15 17 24.4000
-21 03 58.00
J2000
WFPC2
Imaging
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F606W
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POS-TARG
DITHER
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