Results 71 to 80 of about 1,134,125 (370)
Discrete Applied Mathematics, 2008 AbstractIn many clustering systems (hierarchies, pyramids and more generally weak hierarchies) clusters are generated by two elements only.This paper is devoted to such clustering systems (called binary clustering systems). It provides some basic properties, links with (closed) weak hierarchies and some qualitative versions of bijection theorems that ...
François Brucker +1 more
openaire +2 more sources
Merging Binaries in the Galactic Center: The eccentric Kozai-Lidov mechanism with stellar evolution [PDF]
, 2016 Most, if not all, stars in the field are born in binary configurations or higher multiplicity systems. In dense stellar environment such as the Galactic Center (GC), many stars are expected to be in binary configurations as well.
A. Stephan +6 more
semanticscholar +1 more source
Identification of 13 DB + dM and 2 DC + dM binaries from the Sloan Digital Sky Survey
, 2005 We present the identification of 13 DB + dM binaries and 2 DC + dM binaries from the Sloan Digital Sky Survey (SDSS). Before the SDSS only 2 DB + dM binaries and 1 DC + dM binary were known. At least three, possibly 8, of the new DB + dM binaries seem to
E. J. M. van den Besselaar +18 more
core +1 more source
Dynamics of black holes in de Sitter spacetimes [PDF]
, 2012 Nonlinear dynamics in cosmological backgrounds has the potential to teach us immensely about our Universe, and also to serve as prototype for nonlinear processes in generic curved spacetimes.
Cardoso, Vitor +5 more
core +2 more sources
Binary decompositions and varieties of sums of binaries
Journal of Pure and Applied Algebra, 2006 AbstractA homogeneous element in C[x0,…,xn] is a binary form if it “essentially” involves two variables. The problem of decomposing a generic form as a sum of binary forms is introduced and studied. In the n=2 case a complete answer to a Waring type problem is given and the space parameterizing all the binary decompositions of a generic form is studied:
openaire +3 more sources
occumb: An R package for site occupancy modeling of eDNA metabarcoding data
Population Ecology, EarlyView.This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley +1 more source
Frontiers in Astronomy and Space Sciences, 2022 The internal motions of the ionized gas in the shells of planetary nebulae (PNe) have served as relevant diagnostic tools to understand the development of this important stage of stellar evolution.
J. A. López
doaj +1 more source
Wide binaries in Tycho-Gaia: search method and the distribution of orbital separations [PDF]
, 2017 We mine the Tycho-{\it Gaia} astrometric solution (TGAS) catalog for wide stellar binaries by matching positions, proper motions, and astrometric parallaxes. We separate genuine binaries from unassociated stellar pairs through a Bayesian formulation that
J. Andrews, J. Chanam'e, M. Agueros
semanticscholar +1 more source
White-Light Flares on Close Binaries Observed with Kepler
, 2016 Based on Kepler data, we present the results of a search for white-light flares on 1049 close binaries. We identify 234 flare binaries, on which 6818 flares are detected.
Gao, Qing +4 more
core +1 more source
The origin and fate of short-period low-mass black-hole binaries [PDF]
, 2006 We present results of a population synthesis study for semidetached short orbital period binaries which contain low-mass(4 Msun) accretors. Evolution of these binaries is determined by nuclear evolution of the donors and/or orbital angular momentum loss ...
Abramowicz +75 more
core +6 more sources