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Binary system
About: Binary system is a research topic. Over the lifetime, 5788 publications have been published within this topic receiving 97882 citations.
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TL;DR: In this article, the removal process of Zn2+/Cu2+ binary solutions using expanded vermiculite as alternative adsorbent was evaluated in dynamic systems to evaluate the influence of operating flow rate, adsorbate initial concentration and molar fraction on the adsorption process.
32 citations
TL;DR: In this article, the authors analyzed the changes in the observed minus calculated (O-C) diagram in HS 0705+6700, a short-period (2.3 h) eclipsing binary that consists of a very hot subdwarf B-type (sdB) star and a very cool fully convective red dwarf.
Abstract: By using 78 newly determined timings of light minima together with those collected from the literature, we analysed the changes in the observed minus calculated (O-C) diagram in HS 0705+6700, a short-period (2.3 h) eclipsing binary that consists of a very hot subdwarf B-type (sdB) star and a very cool fully convective red dwarf. We confirmed the cyclic variation in the O-C and refined the parameters of the circumbinary brown dwarf (reported to orbit the binary system in 2009) by analysing the changes for the light travel time effect that arises from the gravitational influence of the third body. Our results indicate the lower mass limit of the third body to be M-3 sin i(') = 33.7(+/- 1.6) M-Jup. This companion would be a brown dwarf if its orbital inclination is larger than 27 degrees.7 and it is orbiting the central eclipsing binary with an eccentricity e similar to 0.2 at a separation of about 3.7(+/- 0.1) au.
32 citations
TL;DR: In this paper, 98 spectroscopic binary orbits resulting from the ongoing radial-velocity survey of the old (7 Gyr) open cluster NGC 188 were presented, and all but 13 are high-probability cluster members based on both radial velocity and proper-motion membership analyses.
Abstract: We present 98 spectroscopic binary orbits resulting from our ongoing radial-velocity survey of the old (7 Gyr) open cluster NGC 188. All but 13 are high-probability cluster members based on both radial-velocity and proper-motion membership analyses. Fifteen of these member binaries are double lined. Our stellar sample spans a magnitude range of 10.8 <=V<= 16.5 (1.14-0.92 Msun) and extends spatially to 17 pc (~13 core radii). All of our binary orbits have periods ranging from a few days to on the order of 10^3 days, and thus are hard binaries that dynamically power the cluster. For each binary, we present the orbital solutions and place constraints on the component masses. Additionally, we discuss a few binaries of note from our sample, identifying a likely blue straggler-blue straggler binary system (7782), a double-lined binary with a secondary star which is under-luminous for its mass (5080), two potential eclipsing binaries (4705 and 5762), and two binaries which are likely members of a quadruple system (5015a and 5015b).
32 citations
TL;DR: In this article, the authors modified a tonometer previously used for average molecular weights determination of complex mixtures in order to measure vapor-liquid equilibria of pure compounds and mixtures.
32 citations
TL;DR: In this article, the mass and thermal accommodation coefficients of HNO3-H2O mixture were determined by using the Constant angle mie scattering (CAMS) method in an expansion chamber with a sensitive time of the order of 10 s.
32 citations