Results 41 to 50 of about 2,374,282 (104)
The occurrence of classical Cepheids in binary systems
, 2014 Classical Cepheids, like binary stars, are laboratories for stellar evolution and Cepheids in binary systems are especially powerful ones. About one-third of Galactic Cepheids are known to have companions and Cepheids in eclipsing binary systems have ...
Evans, Nancy R. +4 more
core +1 more source
Evolution of the binary population in young dense star clusters
, 2011 Context: Field stars are not always single stars, but can often be found in bound double systems. Since binary frequencies in the birth places of stars, young embedded clusters, are sometimes even higher than on average the question arises of how binary ...
Aarseth +48 more
core +1 more source
Determination method of binary fractions by the integrated spectrum [PDF]
We need to resolve the individual stars for binary fraction determinations of stellar systems. Therefore, it is not possible to obtain the binary fractions for dense or distant stellar systems. % We proposed a method to determine the binary fraction of a dense or distant stellar system. The method is to first determine the binary fraction variation for
arxiv +1 more source
Interferometry and the study of binaries [PDF]
arXiv, 2004 To determine the parameters (masses, orbital period) of a binary, one requires among others the inclination, which is best determined from a visual orbit. The next generation of interferometers can provide visual orbits for a large number of binaries. We then can investigate with what parameters binaries are born, and how these parameters evolve, and ...
arxiv
The critical number of $I_{1,t}$-free triangle-free binary matroids [PDF]
arXiv, 2020 A simple binary matroid, viewed as a restriction of a finite binary projective geometry $PG(n-1,2)$, is $I_{1,t}$-free if for any rank-$t$ flat of $PG(n-1,2)$, its intersection with the matroid is not a one-element set. In this paper, we show that the simple $I_{1,t}$-free and triangle-free binary matroids have bounded critical number for any $t \geq 1$
arxiv
Non-Contiguous Pattern Avoidance in Binary Trees
, 2012 In this paper we consider the enumeration of binary trees avoiding non-contiguous binary tree patterns. We begin by computing closed formulas for the number of trees avoiding a single binary tree pattern with 4 or fewer leaves and compare these results ...
Dairyko, Michael +3 more
core
Decimal to Binary Number Conversion can be Fun [PDF]
Numbering systems are of great importance in Computer Science and Engineering education. The binary numbering system can be considered as one of the most fundamental, since its understanding is essential for the understanding of other Computer Science ...
Polycarpou, Irene
core
A binary additive equation involving fractional powers [PDF]
Internat. J. Number Theory. 5 (2009), 281-292, 2006 We study the solubility of the binary additive equation $[m^c] + [p^c] = n$, where $m$ is an integer, $p$ is a prime number, and $c$ is a fixed real number in the range $1 < c < 3/2$.
arxiv
The asymptotic formula in the Goldbach binary problem [PDF]
arXiv, 2015 The binary problem of Goldbach is solved by the method of the trigonometrical sums. The asymptotic formula of distribution of the even numbers formed by the sum of two simple uneven numbers is found for each even number from the set of natural numbers N.
arxiv
Visual binary stars: data to investigate formation of binaries [PDF]
Baltic astronomy (2016), Vol. 25, pp. 419-426, 2017 Statistics of orbital parameters of binary stars as well as statistics of their physical characteristics bear traces of star formation history. However, statistical investigations of binaries are complicated by lacking or incomplete observational data and by a number of observational selection effects.
arxiv