Results 1 to 10 of about 159,898 (288)
Relativistic numerical model for close neutron-star binaries [PDF]
Physical Review D, 1996 We describe a numerical method for calculating the (3+1) dimensional general relativistic hydrodynamics of a coalescing neutron-star binary system. The relativistic field equations are solved at each time slice with a spatial 3-metric chosen to be conformally flat.
Wilson, J. R. +2 more
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The A Supergiant Eclipsing Binary BM Cas: An Evolved, Intermediate Mass System
The Astronomical JournalThe evolutionary state of the 198 day eclipsing binary BM Cas is examined using spectra that cover five orbital cycles. Radial velocities measured from Si II 6347 and Si II 6371 track the motion of the primary, and a mass function is found that is ...
T. J. Davidge
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Merger Conditions of Population III Protostar Binaries
The Astrophysical Journal, 2023 Massive close binary stars with extremely small separations have been observed, and they are possible progenitors of gravitational-wave sources. The evolution of massive binaries in the protostellar accretion stage is key to understanding their formation
Takanobu Kirihara +3 more
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Radial Velocity Studies of Close Binary Stars. IX. [PDF]
The Astronomical Journal, 2004 17+ pages, 2 tables, 4 ...
Pych, Wojtek +10 more
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TIC 290061484: A Triply Eclipsing Triple System with the Shortest Known Outer Period of 24.5 Days
The Astrophysical JournalWe have discovered a triply eclipsing triple-star system, TIC 290061484, with the shortest known outer period, P _out , of only 24.5 days. This “eclipses” the previous record set by λ Tauri at 33.02 days, which held for 68 yr.
V. B. Kostov +15 more
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Gas flow in Close Binary Star Systems [PDF]
, 2006 We first present a summary of our numerical work on accretion discs in close binary systems. Our recent studies on numerical simulations of the surface flow on the mass-losing star in a close binary star is then reviewed.
Oka, K. +3 more
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Detection of Four Intermediate-mass Stars with Cool Companions in Low Mass Ratio Eclipsing Binaries
The Astrophysical JournalAccording to the core fragmentation and dynamical capture theories of binary formation, binaries tend to form with nearly equal masses. The detection of intermediate-mass binaries with low mass ratios challenges these theories, as such binaries may form ...
Linfeng Chang +3 more
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Can the Central Compact Object in HESS J1731–347 Be Indeed the Lightest Neutron Star Observed?
The Astrophysical JournalThe exceptionally low mass of $0.7{7}_{-0.17}^{+0.2}{M}_{\odot }$ for the central compact object (CCO) XMMU J173203.3–344518 (XMMU J1732) in the supernova remnant (SNR) HESS J1731–347 challenges standard neutron star (NS) formation models.
S. R. Zhang +2 more
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Stellar Properties of Observed Stars Stripped in Binaries in the Magellanic Clouds
The Astrophysical Journal, 2023 Massive stars (∼8–25 M _⊙ ) stripped of their hydrogen-rich envelopes via binary interaction are thought to be the main progenitors for merging neutron stars and stripped-envelope supernovae.
Y. Götberg +8 more
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‘Swinging Dipoles’ in Magnetic Close Binary Stars [PDF]
International Astronomical Union Colloquium, 1987 AbstractThe recently discovered phenomena in polars - Magnetic Close Binary Stars (MCBS), are discussed. Asynchronous MCBS are on the ‘propeller stage’ (which is analogous to the investigated one for neutron stars), and are synchronizing during ts ≲ 103 yr, being during this stage rapidly evolving, mass ejecting systems.
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