Complete Compact Object and Binary Survey of 47Tuc

Computer Science

Scientific paper

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Hst Proposal Id #9281

Scientific paper

Our Cycle 1 observation of 47Tuc has shown its promise as the ultimate laboratory for study of the production and evolution of compact binaries and compact objects in globular clusters. We propose a deep {4x75ksec} ACIS-S observation to measure the complete populations of millisecond pulsars {MSPs} and cataclysmic variables {CVs} by their variability and spectra and to constrain the main sequence binary population. Coordinated HST {ACS} data would provide unique identifications of CVs and many MSPs and allow the full population of quiescent low mass X-ray binaries to be distinguised from CVs. This dataset would provide fundamental constraints for the origins of neutron stars, millisecond pulsars, magnetic white dwarfs and compact binaries in globular clusters.

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