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We perform evolutionary calculations of binary stars to find progenitors of system with parameters similar to the eclipsing binary system V228. We show that a V228 binary system may be formed starting with an initial binary system which has…

天体物理学 · 物理学 2008-12-31 Marek J. Sarna

We model the evolution of 21 Gaia neutron star (NS)-main-sequence binaries (orbital period $P_{\mathrm{orb}}\sim200$--$1000$ days, eccentricity $e\gtrsim0.2$) using binary evolution with \texttt{MESA}. We examine eccentric mass transfer and…

太阳与恒星天体物理 · 物理学 2026-02-25 Debatri Chattopadhyay , Kyle A. Rocha , Seth Gossage , Vicky Kalogera , Kareem El-Badry , Alexander Tchekhovskoy

In recent years there has been much interest in the nature of two stars, V407 Vul and RXJ0806+1527, which are widely thought to be binary white dwarfs of very short orbital period, 570 and 321 seconds respectively. As such they should be…

天体物理学 · 物理学 2009-11-13 T. R. Marsh , G. Nelemans

I suggest a spiral-in process by which a stellar companion graze the envelope of a giant star while both the orbital separation and the giant radius shrink simultaneously, and a close binary system is formed. The binary system might be…

太阳与恒星天体物理 · 物理学 2015-06-23 Noam Soker

Detailed models of alpha Cen A and B based on new seismological data for alpha Cen B by Carrier & Bourban (2003) have been computed using the Geneva evolution code including atomic diffusion. Taking into account the numerous observational…

天体物理学 · 物理学 2009-11-10 P. Eggenberger , C. Charbonnel , S. Talon , G. Meynet , A. Maeder , F. Carrier , G. Bourban

LP~349$-$25 is a well studied close stellar binary system comprised of two late M dwarf stars, both stars close to the limit between star and brown dwarf. This system was previously identified as a source of GHz radio emission. We observed…

太阳与恒星天体物理 · 物理学 2024-04-29 Salvador Curiel , Gisela N. Ortiz-Leon , Amy J. Mioduszewski , Anthony B. Arenas-Martinez

The evolution of neutron stars in close binary systems with a low-mass companion is considered assuming the magnetic field to be confined within the solid crust. We adopt the standard scenario of the evolution in a close binary system in…

天体物理学 · 物理学 2009-10-30 V. Urpin , U. Geppert , D. Konenkov

We analyze multicolor light curves and high resolution optical spectroscopy of the eclipsing binary and Double Periodic Variable OGLE 05155332-6925581. According to Mennickent et al., this system shows a significant change in the long…

太阳与恒星天体物理 · 物理学 2015-06-11 Hernán Garrido , Ronald E. Mennickent , Gojko Djuraŝevic , Zbigniew Kołaczkowski , Ewa Niemzcura , Nicki Mennekens

We present the results of a systematic exploration of an alternative evolutionary scenario to form double neutron-star binaries, first proposed by Brown (1995), which does not involve a neutron star passing through a common envelope. In…

天体物理学 · 物理学 2009-11-11 J. D. M. Dewi , Ph. Podsiadlowski , A. Sena

Context. The nearby multiple system delta Velorum contains a widely detached eclipsing binary and a third component. Aims. We take advantage of this system offering the opportunity to determine the set of fundamental parameters (masses,…

太阳与恒星天体物理 · 物理学 2015-05-20 T. Pribulla , A. Merand , P. Kervella , M. Vaňko , I. R. Stevens , R. Chini , V. Hoffmeister , O. Stahl , A. Berndt , M. Mugrauer , M. Ammler-von Eiff

Using improved, up-to-date stellar input physics tested against observations of low-mass stars and brown dwarfs we calculate the secular evolution of low-mass donor CVs, including those which form with a brown dwarf donor star. Our models…

天体物理学 · 物理学 2007-05-23 Ulrich Kolb , Isabelle Baraffe

The distinguishing feature of the evolution of close binary stars is the role played by the mass exchange between the component stars. Whether the mass transfer is dynamically stable is one of the essential questions in binary evolution. In…

太阳与恒星天体物理 · 物理学 2020-09-02 Hongwei Ge , Ronald F Webbink , Xuefei Chen , Zhanwen Han

The evolution of an initially stellar dipole type magnetosphere interacting with an accretion disk is investigated using numerical ideal MHD simulations. The simulations follow several 1000 Keplerian periods of the inner disk. The initial…

天体物理学 · 物理学 2008-11-26 Ch. Fendt

We present a detailed analysis of the high-mass binary system V1216 Sco, an eclipsing Algol-type binary hosting a $\beta$ Cephei pulsator, with an orbital period of 3.92 days. This system was analyzed using TESS photometry and…

太阳与恒星天体物理 · 物理学 2025-01-08 A. Miszuda , C. I. Eze , F. Kahraman Alicavus , C. Johnston , G. Handler

So far, stellar population studies have mainly focused on the evolution of single and binary stars. Recent observations show that triple and higher order multiple star systems are common, especially among massive stars. Introducing…

太阳与恒星天体物理 · 物理学 2023-06-19 F. Kummer , S. Toonen , A. de Koter

A large fraction of stars are in binary systems, yet the evolution of proto-planetary discs in binaries has been little explored from the theoretical side. In this paper we investigate the evolution of the discs surrounding the primary and…

地球与行星天体物理 · 物理学 2017-12-20 Giovanni P. Rosotti , Cathie J. Clarke

Binary systems consisting of a white dwarf and a main-sequence companion with orbital periods up to $\approx 100$ d are often thought to be formed through common envelope evolution which is still poorly understood. To provide new…

太阳与恒星天体物理 · 物理学 2022-03-18 F. Lagos , M. R. Schreiber , S. G. Parsons , O. Toloza , B. T. Gänsicke , M. S. Hernandez , L. Schmidtobreick , D. Belloni

We present a high spatial resolution UV to NIR survey of 44 young binary stars in Taurus with separations of 10-1000 AU. The primary results include: (1) The relative ages of binary star components are more similar than the relative ages of…

天体物理学 · 物理学 2009-11-06 R. J. White , A. M. Ghez

We present a comprehensive investigation of main-sequence (MS) binaries in the DRAGON simulations, which are the first one-million particles direct $N$-body simulations of globular clusters. We analyse the orbital parameters of the binary…

太阳与恒星天体物理 · 物理学 2021-03-10 Qi Shu , Xiaoying Pang , Francesco Flammini Dotti , M. B. N. Kouwenhoven , Manuel Arca Sedda , Rainer Spurzem

We use one-dimensional two-zone time-dependent accretion disk models to study the long-term evolution of protostellar disks subject to mass addition from the collapse of a rotating cloud core. Our model consists of a constant surface…

太阳与恒星天体物理 · 物理学 2015-05-18 Zhaohuan Zhu , Lee Hartmann , Charles Gammie