ON THE ECCENTRICITY EXCITATION IN POST-MAIN-SEQUENCE BINARIES
نویسندگان
چکیده
منابع مشابه
On the luminosity ratio of pre-main sequence binaries
Assuming random pairing of single stars from the same fundamental IMF as a good scenario for pre-main sequence binary formation, we show how to derive the mass ratio distribution and the fundamental IMF from the observational luminosity ratio distribution, taking into account pre-main sequence evolution. We also determine how the detectability of a brown dwarf as a companion relates to its own ...
متن کاملDetached white dwarf main-sequence star binaries
We initiated a comprehensive state of the art binary population synthesis study of white dwarf main-sequence star (WDMS) binaries to serve as a foundation for subsequent studies on pre-cataclysmic variables, double white dwarfs, and white dwarf + B-star binaries. We considered seven distinct formation channels subdivided into three main groups according to the evolutionary process that gives ri...
متن کاملPre - main sequence binaries with aligned disks ?
We present the results of a study performed with the goal to investigate whether low-mass pre-main sequence binary stars are formed by multiple fragmentation or via stellar capture. If binaries form preferentially by fragmentation, we expect their disks to be co-planar. On the other hand, the capture scenario will lead to a random distribution of disk orientations. We performed near-infrared po...
متن کاملPost Common Envelope Binaries from SDSS . I : 101 white dwarf main sequence binaries with multiple SDSS spectroscopy
We present a detailed analysis of 101 white dwarf-main sequence binaries (WDMS) from the Sloan Digital Sky Survey (SDSS) for which multiple SDSS spectra are available. We detect significant radial velocity variations in 18 WDMS, identifying them as post common envelope binaries (PCEBs) or strong PCEB candidates. Strict upper limits to the orbital periods are calculated, ranging from 0.43 to 788...
متن کاملOn the post main sequence expansion of low mass stars
The post main sequence expansion of stars is investigated by means of a simple composite configuration: an isothermal He-core (allowing for non-relativistic electron degeneracy) is surrounded by a H-envelope of constant density (polytrope n = 0). Solving the equations of hydrostatic equilibrium for fixed values of total mass and temperature at the interface a one dimensional sequence of models ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2016
ISSN: 1538-4357
DOI: 10.3847/0004-637x/830/1/8