Results 11 to 20 of about 28,422 (257)
Binary Stars in the New Millennium
Progress in Particle and Nuclear Physics, 2023 Binary stars are as common as single stars. Binary stars are of immense importance to astrophysicists because that they allow us to determine the masses of the stars independent of their distances. They are the cornerstone of the understanding of stellar
Han, Zhanwen +2 more
core +2 more sources
Binary stars in Praesepe [PDF]
Monthly Notices of the Royal Astronomical Society, 1992 AbstractIn open clusters the scatter about the single-star main sequence is usually negligible. However, unresolved binary systems are brighter and redder than single stars, and thus some ‘stars’ appear shifted away from the main sequence. We make very simple models of the Praesepe cluster, and find evidence that low-mass systems prefer independent ...
Pavel Kroupa, Christopher A. Tout
openaire +2 more sources
Symposium - International Astronomical Union, 1997 Low and intermediate mass stars leave the Asymptotic Giant Branch (AGB) when the mass in their H-rich envelope is less than about 0.01 M⊙, and the high mass loss drops several orders of magnitude. The central star rapidly evolves to the left part of the HR diagram along a track of constant luminosity (e.g. Schönberner 1983).
van Winckel, H. +2 more
openaire +2 more sources
Binary Be Stars and Be Binaries [PDF]
Symposium - International Astronomical Union, 1992 Two hypotheses have been put forward for the rôle of binarity in Be stars: (1) All Be stars are interacting binaries. (2) Roughly one-half of the observed Be stars are post-mass exchange binaries with compact companions. Contrary to (1), (2) does not attempt to explain also the existence of disks in Be stars.
openaire +1 more source
The Symbiotics as Binary Stars [PDF]
International Astronomical Union Colloquium, 1982 AbstractSymbiotic stars have become an important testing ground of various theories of binary star evolution. Several physically different models can explain them, but in each case certain fairly restrictive conditions must be met, so if we manage to identify a definite object with a model, it will tell us a lot about the structure and evolutionary ...
openaire +1 more source
проект байкал, 2021 Baroque and classicism were called a binary star. In the national architecture, the avant-garde and neoclassicism can be also called a binary star. The model of succession of styles in architecture does not reflect the real situation in the 1920-1950s. Neoclassicism and different movements of “contemporary architecture” run parallel to each other both ...
openaire +4 more sources
Variable binaries and variables in binaries in the Binary star DataBase [PDF]
Research in Astronomy and Astrophysics, 2019 Abstract The Binary star DataBase (BDB, http://bdb.inasan.ru ) combines data from catalogs of binary and multiple stars of all observational types. There is a number of ways for variable stars to form or to be a part of binary or multiple systems.
Kovaleva, D., Malkov, O., Kaygorodov, P.
openaire +2 more sources
The evolution of wide binary stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 We study the orbital evolution of wide binary stars in the solar neighborhood due to gravitational perturbations from passing stars. We include the effects of the Galactic tidal field and continue to follow the stars after they become unbound. For a wide variety of initial semi-major axes and formation times, we find that the number density (stars per ...
Jiang, Yan-Fei, Tremaine, Scott
openaire +2 more sources
Binary Neutron Star Mergers [PDF]
Living Reviews in Relativity, 2012 AbstractWe review the current status of studies of the coalescence of binary neutron star systems. We begin with a discussion of the formation channels of merging binaries and we discuss the most recent theoretical predictions for merger rates. Next, we turn to the quasi-equilibrium formalisms that are used to study binaries prior to the merger phase ...
Joshua A. Faber, Frederic A. Rasio
openaire +4 more sources
Binary Stars in Upper Scorpius [PDF]
The Astronomical Journal, 2019 Abstract To address the statistics of binary stars in the 8 Myr old Upper Scorpius (USco) star formation region, we conducted a speckle interferometric survey of 614 association members more massive than 0.4 (spectral types earlier than M3V) based on the list of Luhman et
Andrei Tokovinin, Cesar Briceño
openaire +2 more sources