We explore the hypothesis that some high-velocity runaway stars attain their peculiar velocities in the course of exchange encounters between hard massive binaries and a very massive star (either an ordinary 50-100 Msun star or a more massive one, formed through runaway mergers of ordinary stars in the core of a young massive star cluster). In this process, one of the binary components becomes gravitationally bound to the very massive star, while the second one is ejected, sometimes with a high speed. We performed three-body scattering experiments and found that early B-type stars (the progenitors of the majority of neutron stars) can be ejected with velocities of $\ga$ 200-400 km/s (typical of pulsars), while 3-4 Msun stars can attain velo...
One possible origin of high velocity stars in the Galaxy is that they are the product of the interac...
We propose an explanation for the origin of hyperfast neutron stars (e.g. PSR B1508+55, PSR B2224+65...
Hypervelocity stars are rare objects, mostly main-sequence (MS) B stars, traveling so fast that they...
We explore the hypothesis that some high-velocity runaway stars attain their peculiar velocities in ...
We performed numerical simulations of dynamical encounters between hard massive binaries and a very ...
Very massive stars preferentially reside in the cores of their parent clusters and form binary or mu...
Several stars detected moving at velocities near to or exceeding the Galactic escape speed likely or...
We use milli-arcsecond accuracy astrometry (proper motions and parallaxes) from Hipparcos and from r...
When a core-collapse supernova occurs in a binary system, the surviving star as well as the compact ...
We explore the hypothesis that B-type emission-line stars (Be stars) have their origin in mass-trans...
Recent proper motion and parallax measurements for the pulsar PSR B1508+55 indicate a transverse vel...
Runaway stars ejected from the Galactic disk populate the halo of the Milky Way. To predict the spat...
We perform an extensive numerical study of the evolution of massive binary systems to predict the pe...
The recent finding by Chevalier & Ilovaisky (1998) from Hipparcos observations that OB-supergiant X-...
Observations show the presence, in the halo of our Galaxy, of stars moving at velocities so high to ...
One possible origin of high velocity stars in the Galaxy is that they are the product of the interac...
We propose an explanation for the origin of hyperfast neutron stars (e.g. PSR B1508+55, PSR B2224+65...
Hypervelocity stars are rare objects, mostly main-sequence (MS) B stars, traveling so fast that they...
We explore the hypothesis that some high-velocity runaway stars attain their peculiar velocities in ...
We performed numerical simulations of dynamical encounters between hard massive binaries and a very ...
Very massive stars preferentially reside in the cores of their parent clusters and form binary or mu...
Several stars detected moving at velocities near to or exceeding the Galactic escape speed likely or...
We use milli-arcsecond accuracy astrometry (proper motions and parallaxes) from Hipparcos and from r...
When a core-collapse supernova occurs in a binary system, the surviving star as well as the compact ...
We explore the hypothesis that B-type emission-line stars (Be stars) have their origin in mass-trans...
Recent proper motion and parallax measurements for the pulsar PSR B1508+55 indicate a transverse vel...
Runaway stars ejected from the Galactic disk populate the halo of the Milky Way. To predict the spat...
We perform an extensive numerical study of the evolution of massive binary systems to predict the pe...
The recent finding by Chevalier & Ilovaisky (1998) from Hipparcos observations that OB-supergiant X-...
Observations show the presence, in the halo of our Galaxy, of stars moving at velocities so high to ...
One possible origin of high velocity stars in the Galaxy is that they are the product of the interac...
We propose an explanation for the origin of hyperfast neutron stars (e.g. PSR B1508+55, PSR B2224+65...
Hypervelocity stars are rare objects, mostly main-sequence (MS) B stars, traveling so fast that they...