Results 61 to 70 of about 202,502 (193)

Twin Binaries: Studies of Stability, Mass Transfer, and Coalescence

, 2011
Motivated by suggestions that binaries with almost equal-mass components ("twins") play an important role in the formation of double neutron stars and may be rather abundant among binaries, we study the stability of synchronized close and contact ...
Belczynski, Bethe, Chandrasekhar, Chandrasekhar, D'souza, Dan, Eggleton, F. A. Rasio, Habets, Hachisu, Hillwig, Hillwig, Hut, J. C. Lombardi, Jacoby, K. Gearity, K. L. Dooley, Krumholz, Lee, Motl, Nice, Paczyiński, Pinsonneault, Pols, Rasio, Rasio, Santander-Garcia, Stairs, Thorsett, V. Kalogera, W. Holtzman, Wang, Webbink, Weisberg, Willems, Willems, Wong   +36 more
core   +1 more source

Mass Transfer in Two Post-AGB Binaries with Dusty Disks

Open Astronomy, 2012
We present a time series of high-resolution spectra for two poorly studied candidate post-AGB stars surrounded by dusty disks, BD+46 442 and IRAS 19135+3937. We find that both stars show radial velocity variations with periods of 130-140 days. IRAS 19135+
Gorlova N., Van Winckel H., Jorissen A.
doaj   +1 more source

Deconstructing the Characteristics of the Ionized Gas Component in Planetary Nebulae From Their Internal Motions

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

Features of globular cluster’s dynamics with an intermediate-mass black hole

Open Astronomy, 2018
In this paper, we address the question of how a central intermediate-mass black hole (IMBH) in a globular cluster (GC) affects dynamics, core collapse, and formation of the binary population.
Ryabova Marina V., Gorban Alena S., Shchekinov Yuri A., Vasiliev Evgenii O.   +3 more
doaj   +1 more source

Magnetic Interaction in Ultra-compact Binary Systems

, 2009
This article reviews the current works on ultra-compact double-degenerate binaries in the presence of magnetic interaction, in particular, unipolar induction. The orbital dynamics and evolution of compact white-dwarf pairs are discussed in detail. Models
Alfvéen, Belczynski, Belczynski, Blandford, Campbell, Cropper, Cropper, Dulk, Ellis, Feynman, Israel, Israel, Kelley, Kinwah Wu, Kopparapu, Laine, Landau, Lewin, Li, Li, Li, Miller, Montgomery, Motch, Nelemans, Nelemans G, Postnov, Punsly, Retter, Shatskii, Solheim, Steeghs, Strohmayer, Strohmayer, Strohmayer, Strohmayer, Strohmayer, Uchida, Visvanathan, Warner, Wickramasinghe, Wu, Wu, Wu   +43 more
core   +1 more source

An Extremely Massive White Dwarf of the Symbiotic Classical Nova V407 Cyg as Suggested by the RS Oph and U SCO Models

Open Astronomy, 2012
We have analyzed the optical light curve of the symbiotic star V407 Cyg that underwent a classical nova outburst in 2010 March. Being guided by a supersoft X-ray phase observed during days 20-40 after the nova outburst, we are able to reproduce the light
Hachisu I., Kato M.
doaj   +1 more source

The frequency of planets in multiple systems

, 2007
The frequency of planets in binaries is an important issue in the field of extrasolar planet studies, because of its relevance in estimating of the global planet population of our Galaxy and the clues it can give to our understanding of planet formation ...
Allen, Beuzit, Boss, Burgasser, Burgasser, Butler, Butler, Chakraborty, Chauvin, Cumming, Debes, Delfosse, Desidera, Desidera, Duquennoy, Duquennoy, Eggenberger, Els, Fabricius, Fischer, Fischer, Fischer, Fisher, Girardi, Gizis, Gizis, Golimowski, Gould, Gratton, Griffin, Halbwachs, Halbwachs, Hale, Heintz, Holman, Huensch, Jones, Jones, Konacki, Lagrange, Latham, Linsky, Liu, Luhman, Lépine, M. Bonavita, Makarov, Marcy, Marcy, Martín, Mayor, Mugrauer, Mugrauer, Nidever, Nordström, Perrier, Pfahl, Pichardo, Pinfield, Pourbaix, Quist, Raghavan, Reffert, Reid, S. Desidera, Salim, Thébault, Thévenin, Tinney, Tokovinin, Tokovinin, Turner, Valenti, Vogt, Wittenmyer, Worley, Worley, Worley, Wright, Zucker   +79 more
core   +2 more sources

Jupiter Mass Binary Objects Show a Minimum Acceleration

Astronomy
Forty-two Jupiter Mass Binary Objects (JuMBOs) have been discovered in the Trapezium Cluster: either brown dwarf stars or planets mutually orbiting in pairs.
Michael E. McCulloch
doaj   +1 more source

3D binary signatures [PDF]

Proceedings of the Tenth Indian Conference on Computer Vision, Graphics and Image Processing, 2016
Tenth Indian Conference on Computer Vision, Graphics and Image Processing ...
Siddharth Srivastava 0004, Brejesh Lall
openaire   +2 more sources

Multiplicity of Luminous Blue Variable Stars

Galaxies
The study of Luminous Blue Variables (LBVs) is critical to understanding the mechanisms behind their recurring S Dor-like outbursts, which can span decades and feature dramatic spectral changes.
A. Lobel, N. Gorlova
doaj   +1 more source