Close binary systems among very low-mass stars and brown dwarfs

2005 ◽  
Vol 326 (10) ◽  
pp. 944-947 ◽  
Author(s):  
R. D. Jeffries ◽  
P. F. L. Maxted
Keyword(s):  
Binary Systems ◽  
Brown Dwarfs ◽  
Close Binary ◽  
Low Mass Stars ◽  
Close Binary Systems ◽  
Low Mass

scholarly journals Neutron Star Formation in Theoretical Supernovae — Low Mass Stars and White Dwarfs —

1987 ◽  
Vol 125 ◽  
pp. 281-303
Author(s):  
Ken'ichi Nomoto
Keyword(s):  
Neutron Stars ◽  
White Dwarfs ◽  
Binary Systems ◽  
Crab Nebula ◽  
Close Binary ◽  
Low Mass Stars ◽  
Supernova Explosions ◽  
Low Mass ◽  
Strongly Degenerate ◽  
The Crab Nebula

The presupernova evolution of stars that form semi-degenerate or strongly degenerate O+Ne+Mg cores is discussed. For the 10–13 M⊙ stars, behavior of off-center neon flashes is crucial. The 8–10 M⊙ stars do not ignite neon and eventually collapse due to electron captures. Properties of supernova explosions and neutron stars expected from these low mass progenitors are compared with the Crab nebula. We also examine the conditions for which neutron stars form from accretion-induced collapse of white dwarfs in close binary systems.

Circumstellar disk fragmentation and the origin of massive planetary companions, brown dwarfs, and very low-mass stars

2018 ◽  
Vol 14 (S345) ◽  
pp. 239-240 ◽  
Author(s):  
M. B. N. Kouwenhoven ◽  
Yun Li ◽  
D. Stamatellos ◽  
S. P. Goodwin
Keyword(s):  
Binary Systems ◽  
Brown Dwarfs ◽  
Mass Range ◽  
Mass Function ◽  
Initial Mass Function ◽  
Low Mass Stars ◽  
Triple Systems ◽  
Low Mass ◽  
Viable Mechanism

AbstractThe low-mass end of the initial mass function remains poorly understood. In this mass range, very low-mass stars, brown dwarfs, and massive planets are able to form through a variety of physical processes. Here, we study the long-term evolution of disk-fragmented systems around low-mass stars, for the epoch up to 10 Myr (the typical lifetime of an embedded cluster) and up to 10 Gyr (the age of the Milky Way). We carry out N-body simulations to study the decay of disk-fragmented systems and the resulting end products. Our simulations indicate rapid decay and frequent physical collisions during the first 10 Myr. We find that disk fragmentation provides a viable mechanism for explaining hierarchical triple systems, the brown dwarf desert, single and binary brown dwarfs, and very low-mass binary systems in the solar neighbourhood.

scholarly journals Evolution Into Contact of the Low-Mass Close Binary Systems

1989 ◽  
Vol 107 ◽  
pp. 361-361
Author(s):  
M.J. Sarna ◽  
A.V. Fedorova
Keyword(s):  
Binary Systems ◽  
Close Binary ◽  
Close Binary Systems ◽  
Low Mass

AbstractWe investigated the effect of mass accretion on the secondary components in close binomy systems (Mtotal ≤ 2.5M⊙M2.0 ≤ 0.75M⊙) exchanging mass in the case A.

Evolution of low-mass close binary systems

1988 ◽  
Vol 328 ◽  
pp. 617 ◽  
Author(s):  
P. N. McDermott ◽  
Ronald E. Taam ◽  
F. A. Ringwald
Keyword(s):  
Binary Systems ◽  
Close Binary ◽  
Close Binary Systems ◽  
Low Mass
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