Determination of the Critical Properties of C6–C10 n-Alkanes and Their Binary Systems Using a Flow Apparatus

2014 ◽  
Vol 59 (11) ◽  
pp. 3852-3857 ◽  
Author(s):  
Yang Liu ◽  
Ying Zhang ◽  
Mao-gang He ◽  
Nan Xin
Keyword(s):  
Binary Systems ◽  
Critical Properties ◽  
Flow Apparatus

scholarly journals Empirical Determination of the Gravity-Darkening Exponent for the Secondary Components Filling the Roche Lobe in Semi-Detached Close Binary Systems

1988 ◽  
Vol 108 ◽  
pp. 217-218
Author(s):  
Masatoshi Kitamura ◽  
Yasuhisa Nakamura
Keyword(s):  
Binary Systems ◽  
Main Sequence ◽  
Close Binary System ◽  
Roche Lobe ◽  
Close Binary ◽  
Close Binaries ◽  
Main Sequence Stars ◽  
Local Gravity ◽  
Subsurface Layers

The ordinary semi-detached close binary system consists of a main-sequence primary and subgiant (or giant) secondary component where the latter fills the Roche lobe. From a quantitative analysis of the observed ellipticity effect, Kitamura and Nakamura (1986) have deduced empirical values of the exponent of gravity-darkening for distorted main-sequence stars in detached systems and found that the empirical values of the exponent for these stars with early-type spectra are close to the unity, indicating that the subsurface layers of early-main sequence stars in close binaries are actually in radiative equilibrium. The exponent of gravity-darkening can be defined by H ∝ gα with H as the bolonetric surface brightness and g as the local gravity on the stellar surface.

scholarly journals Long Baseline Interferometry and Binary Stars

1983 ◽  
Vol 62 ◽  
pp. 191-201
Author(s):  
John Davis
Keyword(s):  
Binary Stars ◽  
Binary Systems ◽  
Current Status ◽  
Fundamental Properties ◽  
Long Baseline ◽  
Stellar Interferometer ◽  
Spectroscopic Binary ◽  
Future Plans ◽  
Intensity Interferometer

AbstractThe observations of α Vir with the Narrabri Stellar Intensity Interferometer demonstrated the potential of long baseline interferometry for the determination of fundamental properties of double-lined spectroscopic binary systems. Since the completion of the programme with the Narrabri instrument the Chatterton Astronomy Department has been conducting a study aimed at developing a stellar interferometer with limiting magnitude V ≳ +8 and maximum baseline ≳ 1 km (resolution at 500 nm ≲ 7 × 10−5 seconds of arc). The way in which a long baseline interferometer may be used in the study of binary stars is outlined, the requirements for this work are discussed, and the current status and future plans of the Chatterton Astronomy Department’s programme to develop a new long baseline interferometer are summarised.

scholarly journals Experimental determination of the critical locus of binary systems containing CO2and an ethyl ester

2013 ◽  
Vol 3 ◽  
pp. 01020
Author(s):  
N. Juntarachat ◽  
L. Coniglio ◽  
R. Privat ◽  
J.-N. Jaubert
Keyword(s):  
Experimental Determination ◽  
Ethyl Ester ◽  
Binary Systems ◽  
Critical Locus

scholarly journals The Influence of an Outflowing Gaseous Stream on the Determination of Masses of Semidetached Binary Systems

1985 ◽  
Vol 111 ◽  
pp. 385-388
Author(s):  
D. Chochol ◽  
A. Vittone
Keyword(s):  
General Model ◽  
Binary Systems ◽  
Symbiotic Stars ◽  
Eclipsing Binary ◽  
Gaseous Stream ◽  
The Masses

A general model of gaseous streams in semidetached systems is proposed from the study of the eclipsing binary symbiotic stars CI Cyg and V 1329 Cyg. The influence of gaseous streams on the determination of the masses of semidetached systems is shown.

scholarly journals New Mixed Y0.5R0.5VO4 and RVO4:Bi Materials: Synthesis, Crystal Structure and Some Luminescence Properties

Inorganics ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 94 ◽  
Author(s):  
Leonid Vasylechko ◽  
Andrii Tupys ◽  
Vasyl Hreb ◽  
Volodymyr Tsiumra ◽  
Iryna Lutsiuk ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Binary Systems ◽  
Materials Synthesis ◽  
Lattice Constants ◽  
Cation Radius ◽  
Photoluminescence Studies ◽  
The Impact ◽  
Structure And Microstructure ◽  
Cell Volumes

The results are reported on a precise crystal structure and microstructure determination of new mixed YVO4-based orthovanadates of Y0.5R0.5VO4 (R = Sm, Tb, Dy, Ho, Tm, Yb, Lu) as well as some Bi3+-doped RVO4 (R = La, Gd, Y, Lu) nano- (submicro-) materials. The formation of continuous solid solutions in the YVO4–RVO4 pseudo-binary systems (R = Sm, Tb, Dy, Ho, Tm, Yb, Lu) has been proved. The lattice constants and unit cell volumes of the new mixed orthovanadates were analyzed as a function of R3+ cation radius. The impact of crystal structure parameters on the energy band gap of the materials was studied by means of photoluminescence studies of the Bi3+-doped compounds.

scholarly journals Stream Parameters in the Neighbourhood of the L1 Point in W Serpentis-type Binaries

1995 ◽  
Vol 151 ◽  
pp. 112-114
Author(s):  
V.G. Karetnikov ◽  
E.V. Luthardt-Menchenkova ◽  
V.V. Nazarenko
Keyword(s):  
Binary Systems ◽  
Great Influence ◽  
Close Binary System ◽  
Small Extent ◽  
Close Binary ◽  
Close Binaries ◽  
Circumstellar Envelope ◽  
Hydrodynamic Method ◽  
Common Deficiency

The gas motion in close binary systems has been investigated by several authors using a hydrodynamic method (e.g. Prendergast & Taam 1974, Flannery 1975, Lubow & Shu 1975, 1976). All these researches have, besides important results, a common deficiency: in the analysis of the gas motion, the extent and velocity of the stream in the neighbourhood of the inner Lagrangian point L1 was not calculated. They have been chosen on the basis of general assumptions (the same for all types of close binaries). A fundamental assumption was the small extent of the stream in the neighbourhood of L1 perpendicular to the line connecting the centers of the stars. At the same time the extent and the velocity of the stream near L1 exert a great influence on the further stream motion, on the formation of the circumstellar envelope and finally on the evolution of the close binary system. Therefore the first step in the investigation of the gas motion in a close binary must be the determination of the initial parameters of the stream in the neighbourhood of the point L1.

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