Statistics – Computation
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...322..842r&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 322, Nov. 15, 1987, p. 842-851. NSERC-supported research.
Statistics
Computation
97
Computational Astrophysics, Gravitational Fields, Stellar Evolution, Stellar Mass, X Ray Binaries, Dwarf Stars, Neutron Stars, Space Density, Star Clusters, Stellar Orbits
Scientific paper
The authors calculate the evolution of an ultracompact binary wherein mass transfer is driven by the emission of gravitational radiation, with emphasis on a systematic study of how the rate of change in orbital period depends on the various system parameters. The authors derive analytic scaling laws describing how the mass of the secondary, the mass transfer rate, and Pdepend on the binary system parameters, and they apply these simple relations to the 4U 1820-30 system, located in the globular cluster NGC 6624. The authors then carry out detailed numerical evolutionary calculations utilizing Zapolsky-Salpeter (1969) models for cold stars, but allowing for the possibility that the secondary has not yet reached a completely degenerate configuration. Finally, the results are used to set significant constraints on the deviation from a completely degenerate configuration of the secondary, the systemic mass-loss parameters, and the mass of the neutron star in the 4U 1820-30 system.
Joss Paul C.
Ma Chung-Pei
Nelson Lorne Archie
Rappaport Saul
No associations
LandOfFree
The evolutionary status of 4U 1820-30 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 The evolutionary status of 4U 1820-30, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The evolutionary status of 4U 1820-30 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1713469