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Stellar encounters involving neutron stars in globular cluster coresEncounters between a 1.4 solar mass neutron star and a 0.8 solar mass red giant (RG) and between a 1.4 solar mass neutron star (NS) and an 0.8 solar mass main-sequence (MS) star have been successfully simulated. In the case of encounters involving an RG, bound systems are produced when the separation at periastron passage R(MIN) is less than about 2.5 R(RG). At least 70 percent of these bound systems are composed of the RG core and NS forming a binary engulfed in a common envelope of what remains of the former RG envelope. Once the envelope is ejected, a tight white dwarf-NS binary remains. For MS stars, encounters with NSs will produce bound systems when R(MIN) is less than about 3.5 R(MS). Some 50 percent of these systems will be single objects with the NS engulfed in a thick disk of gas almost as massive as the original MS star. The ultimate fate of such systems is unclear.
Document ID
19930035786
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Davies, M. B.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Benz, W.
(Steward Observatory Tucson, AZ, United States)
Hills, J. G.
(Los Alamos National Lab. NM, United States)
Date Acquired
August 15, 2013
Publication Date
December 10, 1992
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 401
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A19783
Funding Number(s)
CONTRACT_GRANT: NAGW-1963
Distribution Limits
Public
Copyright
Other

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