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• W2033292023 abstract "view Abstract Citations (25) References (18) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Episodic Mass Transfer in Binaries with X-Ray Heating Harpaz, A. ; Rappaport, S. Abstract The evolution of low-mass X-ray binary (LMXB) systems is investigated with X-ray heating of the secondary star included in the calculations. We take into account shielding of the secondary star from X-radiation by the accretion disk via an ad hoc prescription. The effects of X-ray heating and the removal of mass from the secondary are calculated in detail. The evolution of the secondary exhibits a quasi-periodic behavior, where a cycle starts with an interval of a few hundred years with a very high rate of mass loss (approximately 10-6 - 10-5 solar mass/yr), during which approximately 10-4 - 4 x 10-3(solar mass is removed from the secondary. Each large mass transfer event is followed by a longer quiescent interval (approximately 3 x 105/yr), during which the secondary underfills its Roche lobe. This is in turn followed by an even longer interval (approximately 1.5 x 106 yr) with a moderate average rate of mass transfer (approximately 10-9 solar mass/yr) which actually consists of a series of short episodes (1-1000 yr) of mass transfer at rates of 10-7 - 10-5 solar mass/yr. During these latter episodes, 3 x 10-6 - 10-4 solar mass are lost from the secondary. The length of this third part of the cycle, with lower average mass transfer rates, increases systematically as the evolution progresses. To help validate our findings, the stellar evolution code was tested by varying the length of the integration time step; the results were found to be qualitatively unchanged by such variations. Publication: The Astrophysical Journal Pub Date: October 1994 DOI: 10.1086/174726 Bibcode: 1994ApJ...434..283H Keywords: Mass Transfer; Periodic Variations; Radiant Heating; Stellar Evolution; X Ray Binaries; X Ray Spectra; Accretion Disks; Computerized Simulation; Eddington Approximation; Astrophysics; STARS: BINARIES: CLOSE; STARS: EVOLUTION; X-RAYS: STARS full text sources ADS | data products SIMBAD (1)" @default.
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• W2033292023 date "1994-10-01" @default.
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• W2033292023 title "Epsiodic mass transfer in binaries with X-ray heating" @default.
• W2033292023 doi "https://doi.org/10.1086/174726" @default.
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