Computer Science
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7889g&link_type=abstract
HST Proposal ID #7889
Computer Science
Hst Proposal Id #7889 Hot Stars High-Mass Stars
Scientific paper
Stellar collisions and interactions in dense star clusters are fundamental to the evolution of globular clusters and galactic nuclei. The highest stellar collision rate suspected in the Galaxy is in the obscured bulge globular, Terzan 5. We shall identify compact binaries formed, and ejected, in this cluster with Paschen alpha {F187N} vs. continuum {F187W or F190N} imaging to identify emission line objects and CVs. By centering NIC1 on the bright eclipsing {1.8h} millisecond pulsar 32" from the cluster center, we shall also conduct a sensitive search for its counterpart and both constrain the pulsar spin up and cluster gravitational potential, while the highest resolution NIC1 field surveys the cluster core. Scaling from our successful H Alpha vs. R {WFPC1} and followup FOS programs in NGC 6397, we expect at least 30 emission line CVs in the cluster core. Ter 5 is both more massive and much more metal rich, enabling constraints on WD and NS production vs. original IMF of the cluster. This cluster can only be studied in the near-IR, and HST resolution is essential given its extreme crowding.
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