Results 21 to 30 of about 1,653,589 (294)
Refining Orbits of Bright Binary Systems
Galaxies, 2022 We obtained spectra of several bright binary systems (ζ02 UMa, 2 Lac, and ϕ Aql), which were mostly observed with photographic plates and whose orbits were not determined very accurately. Each system was monitored for a few years with the 81-cm telescope
Anatoly S. Miroshnichenko +5 more
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Universe, 2019 There is increasing observational evidence that short and long Gamma-ray bursts (GRBs) originate in different subclasses, each one with specific energy release, spectra, duration, etc, and all of them with binary progenitors.
J. A. Rueda, R. Ruffini, Y. Wang
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Darwin-Riemann Problems in Newtonian Gravity [PDF]
, 1999 In this paper, we have reviewed the present status of the theory of equilibrium configurations of compact binary star systems in Newtonian gravity. Evolutionary processes of compact binary star systems due to gravitational wave emission can be divided ...
Eriguchi, Yoshiharu, Uryu, Koji
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Photometric Study of W UMa Type Binaries in the Old Open Cluster Berkeley 39 [PDF]
, 2009 The study of W UMa binary systems give a wealth of information about its nature as well as about its parent body (if any), like clusters. In this paper, we present the I passband photometric solutions of four W UMa binaries in the open cluster Berkeley ...
Al-Naimy +17 more
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The LuckyCam Survey for Very Low Mass Binaries II: 13 new M4.5-M6.0 Binaries [PDF]
, 2007 We present results from a high-angular-resolution survey of 78 very low mass (VLM) binary systems with 6.0 = 0.15 arcsec/yr. 21 VLM binaries were detected, 13 of them new discoveries. The new binary systems range in separation between 0.18 arcsec and 1.3
Baraffe I. +16 more
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The evolution of binary system from predynastic Egypt to Leibniz era [PDF]
Journal of Mahani Mathematical ResearchEgyptians of the predynastic era had a good decimal number system for counting and addition. Although, up to some times, they had problem in counting beyond a million, by the dawn of their history, Narmer, the founder of the first Egyptian dynasty had ...
Z. Pourfereidouni, M. Radjabalipour
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Properties of planets in binary systems [PDF]
Astronomy & Astrophysics, 2006 The statistical properties of planets in binaries were investigated. Any difference to planets orbiting single stars can shed light on the formation and evolution of planetary systems. As planets were found around components of binaries with very different separation and mass ratio, it is particularly important to study the characteristics of planets ...
Desidera, S., Barbieri, M.
openaire +2 more sources
Stationary structures of irrotational binary systems -- models for close binary systems of compact stars [PDF]
, 1998 We propose a new numerical method to calculate irrotational binary systems composed of compressible gaseous stars in Newtonian gravity. Assuming irrotationality, i.e.
Eriguchi Y. +11 more
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The BSN Application-I: Photometric Light Curve Solutions of Contact Binary Systems
GalaxiesLight curve analysis of W UMa-type contact binary systems using MCMC or MC methods can be time-consuming, primarily because the repeated generation of synthetic light curves tends to be relatively slow during the fitting process.
Ehsan Paki +2 more
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On the frequency of planetary systems around G-dwarfs
, 2013 We determine the fraction of G-dwarf stars that could host stable planetary systems based on the observed properties of binaries in the Galactic field, and in various postulated primordial binary populations, which assume that the primordial binary ...
Parker, Richard J., Quanz, Sascha P.
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