منابع مشابه
Baltic Astronomy, vol. 25, 384–392, 2016 HIDDEN POPULATION OF ALGOLS
We present the results of Monte Carlo simulation aiming to estimate the frequency of semi-detached Algol-type binaries among the stars observed as single. When an account is taken of various detection biases (mostly due to inclination of orbits), the fraction of Algols among the Galactic disk stars appears to be 0.1–0.2%. However, this number should be regarded as a lower limit only, since ther...
متن کاملThe Evolution of Cool Algols
Abstract: We apply a model of dynamo-driven mass loss, magnetic braking and tidal friction to the evolution of stars with cool convective envelopes; in particular we apply it to binary stars where the combination of magnetic braking and tidal friction can cause angular-momentum loss from the orbit. For the present we consider the simplification that only one component of a binary is subject to ...
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Satellite potentials in the outer plasmasphere range from near zero to +5 to +10 V. Under such conditions ion measurements may not include the low energy core of the plasma population. In eclipse, the photoelectron current drops to zero, and the spacecraft potential can drop to near zero volts. In regions where the ambient plasma density is below 100 cm, previously unobserved portions of the am...
متن کاملThe Hidden Ion Population of the Magnetosphere
Particle data from two geosynchronous satellites (Applied Technology Satellite 6 and SCATHA) show a normally hidden ion population appearing when the satellites are in the earth's shadow. Ion and electron data show the spacecraft potential dropping from +10 V in sunlight to +4 to +5 V in eclipse at local midnight, in low-energy (T < 1 keV) plasma sheet environments. During eclipse, a cold (T = ...
متن کاملHidden process models for animal population dynamics.
Hidden process models are a conceptually useful and practical way to simultaneously account for process variation in animal population dynamics and measurement errors in observations and estimates made on the population. Process variation, which can be both demographic and environmental, is modeled by linking a series of stochastic and deterministic subprocesses that characterize processes such...
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ژورنال
عنوان ژورنال: Open Astronomy
سال: 2016
ISSN: 2543-6376
DOI: 10.1515/astro-2017-0257