Results 61 to 70 of about 1,134,125 (370)
Open Astronomy, 2017 Evolved stars with a helium core can be formed by non-conservative mass exchange interaction with a companion or by strong mass loss. Their masses are smaller than 0.5 M⊙. In the database of the Sloan Digital Sky Survey (SDSS), there are several thousand
Pelisoli Ingrid +2 more
doaj +1 more source
Massive black hole binaries from runaway collisions: the impact of metallicity [PDF]
, 2016 The runaway collision scenario is one of the most promising mechanisms to explain the formation of intermediate-mass black holes (IMBHs) in young dense star clusters.
M. Mapelli
semanticscholar +1 more source
The LISA Gravitational Wave Foreground: A Study of Double White Dwarfs [PDF]
, 1995 Double white dwarfs are expected to be a source of confusion-limited noise for the future gravitational wave observatory LISA. In a specific frequency range, this 'foreground noise' is predicted to rise above the instrumental noise and hinder the ...
Ruiter, A. J. +4 more
core +4 more sources
The Evolution of a Supermassive Retrograde Binary Embedded in an Accretion Disk
Open Astronomy, 2015 In this note we discuss the main results of a study of a massive binary with unequal mass ratio, q, embedded in an accretion disk, with its orbital rotation being opposed to that of the disk.
Ivanov P. B. +3 more
doaj +1 more source
Odessa Astronomical Publications, 2018 In the present work we have computed and have compared the on- and off- generations in low and high mass accretion rate accretion disks. The comparison shows that in the case of low mass accretion rate in disk (10−10 solar mass per year) the ON-state time
V. Nazarenko
doaj +1 more source
Asteroseismic Analysis of δ Scuti Components of Binary Systems: The Case of KIC 8504570
Galaxies, 2020 The present work concerns the Asteroseismology of the Kepler-detached eclipsing binary KIC 8504570. Particularly, it focuses on the pulsational behaviour of the oscillating component of this system and the estimation of its physical parameters in order ...
Alexios Liakos, Panagiotis Niarchos
doaj +1 more source
Merging binary black holes formed through chemically homogeneous evolution in short-period stellar binaries [PDF]
, 2015 We explore a newly proposed channel to create binary black holes of stellar origin. This scenario applies to massive, tight binaries where mixing induced by rotation and tides transports the products of hydrogen burning throughout the stellar envelopes ...
I. Mandel, S. D. Mink
semanticscholar +1 more source
Proceedings of the International Astronomical Union, 2012 AbstractGaia's five-year observation baseline might naively lead to the expectation that it will be possible to fit the parallax of any sufficiently nearby object with the default five-parameter model (position at a reference epoch, parallax and proper motion).
Pourbaix, Dimitri +3 more
openaire +1 more source
An HST/WFPC2 Survey for Brown Dwarf Binaries in the alpha Per and the Pleiades Open Clusters
, 2003 We present the results of a high-resolution imaging survey for brown dwarf (BD) binaries in two open clusters. The observations were carried out with WFPC2 onboard HST.
Baraffe I. +13 more
core +1 more source
Evaluating GAIA performances on eclipsing binaries. I. Orbits and stellar parameters for V505 Per, V570 Per and OO Peg [PDF]
, 2001 The orbits and physical parameters of three detached, double-lined A-F eclipsing binaries have been derived combining H_P, V_T, B_T photometry from the Hipparcos/Tycho mission with 8500-8750 Ang ground-based spectroscopy, mimicking the photometric ...
A. Prša +26 more
core +4 more sources