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Photospheric radius expansion X-ray bursts as standard candles
We examined the maximum bolometric peak luminosities during type I X-ray bursts from the persistent or transient luminous X-ray sources in globular clusters. We show that for about two thirds of theExpand
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A new technique for calculations of binary stellar evolution, with application to magnetic braking
We present a new computational technique for the study of the evolution of compact binary stellar systems with mass-losing secondaries whose masses can range between approx.0.01 M/sub sun/ andExpand
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Population synthesis for double white dwarfs. I. Close detached systems.
We model the population of double white dwarfs in the Galaxy and find a better agreement with observations compared to earlier studies, due to two modifications. The first is the treatment of theExpand
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Population synthesis for double white dwarfs. II. Semi-detached systems: AM CVn stars
We study two models for AM CVn stars: white dwarfs accreting (i) from a helium white dwarf companion and (ii) from a helium-star donor. We show that in the first model possibly no accretion diskExpand
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Mass Transfer Instabilities Due to Angular Momentum Flows in Close Binaries
Le temps de croissance d'une instabilite de transfert de masse dans un systeme binaire serre de faible masse est calcule. La variation du rayon du lobe de Roche due au transfert de masse est aussiExpand
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a companion star. Optical obser­ vations have shown that there are two main classes of such X-ray binaries: the high-mass X-ray binaries, in which the mass donor is an 0 or B star, and the low-massExpand
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The masses of PSR J1911-5958A and its white dwarf companion
We present spectroscopic and photometric observations of the optical counterpart to PSR J1911−5958A, a millisecond pulsar located towards the globular cluster NGC6752. We measure radial velocitiesExpand
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Chandra Observation of the Globular Cluster NGC 6440 and the Nature of Cluster X-Ray Luminosity Functions
As part of our campaign to determine the nature of the various source populations of the low-luminosity globular cluster X-ray sources, we have obtained a Chandra X-Ray Observatory ACIS-S3 image ofExpand
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American Astronomical Society Meeting Abstracts
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Measuring the Cosmic-Ray Acceleration Efficiency of a Supernova Remnant
Cosmic Shock Waves Cosmic rays are high-energy charged particles that bombard Earth from all directions in the sky; those originating from within our Galaxy are thought to be accelerated in theExpand
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