Results 11 to 20 of about 41,311 (309)

Collisions versus stellar winds in the runaway merger scenario: place your bets [PDF]

open access: green, 2016
The runaway merger scenario is one of the most promising mechanisms to explain the formation of intermediate-mass black holes (IMBHs) in young dense star clusters (SCs).
Mapelli, Michela
core   +2 more sources

On inelastic hydrogen atom collisions in stellar atmospheres [PDF]

open access: green, 2011
The influence of inelastic hydrogen atom collisions on non-LTE spectral line formation has been, and remains to be, a significant source of uncertainty for stellar abundance analyses, due to the difficulty in obtaining accurate data for low-energy atomic
A. K. Belyaev   +63 more
core   +5 more sources

The Evolution of Blue Stragglers Formed Via Stellar Collisions [PDF]

open access: yesThe Astronomical Journal, 1998
We have used the results of recent smoothed particle hydrodynamic simulations of colliding stars to create models appropriate for input into a stellar evolution code.
C. J. Pritchet   +10 more
core   +5 more sources

Stellar Collisions and Ultracompact X‐Ray Binary Formation [PDF]

open access: greenThe Astrophysical Journal, 2006
(abridged) We report the results of SPH calculations of parabolic collisions between a subgiant or slightly evolved red-giant star and a neutron star (NS). Such collisions are likely to form ultracompact X-ray binaries (UCXBs) observed today in old globular clusters.
J. C. Lombardi, Jr.   +5 more
openalex   +4 more sources

STELLAR COLLISIONS AND BLUE STRAGGLER STARS IN DENSE GLOBULAR CLUSTERS [PDF]

open access: bronzeThe Astrophysical Journal, 2013
Blue straggler stars (BSS) are abundantly observed in all Galactic globular clusters (GGC) where data exist. However, observations alone cannot reveal the relative importance of various formation channels or the typical formation times for this well studied population of anomalous stars.
Sourav Chatterjee   +3 more
openalex   +5 more sources

Effects of stellar collisions on star cluster evolution and core collapse [PDF]

open access: bronze, 2007
We systematically study the effects of collisions on the overall dynamical evolution of dense star clusters using Monte Carlo simulations over many relaxation times.
Frederic A. Rasio   +3 more
core   +2 more sources

Evolution of stellar collision products in open clusters. II. A grid of low-mass collisions [PDF]

open access: greenAstronomy & Astrophysics, 2008
In a companion paper we studied the detailed evolution of stellar collision products that occurred in an $N$-body simulation of the old open cluster M67 and compared our detailed models to simple prescriptions. In this paper we extend this work by studying the evolution of the collision products in open clusters as a function of mass and age of the ...
E. Glebbeek, O. R. Pols
openalex   +6 more sources

Binary Stars Approaching Supermassive Black Holes: Tidal Breakup, Double Stellar Disruptions, and Stellar Collision

open access: yesThe Astrophysical Journal
In galactic centers, stars and binaries can be injected into low-angular-momentum orbits, resulting in close encounters with the central supermassive black hole (SMBH).
Fangyuan Yu, Dong Lai
doaj   +3 more sources

Overview of Numerical Simulations for Calculating In-Plasma β-Decay Rates in the Framework of PANDORA Project [PDF]

open access: yesEPJ Web of Conferences, 2023
β-decay rates are essential inputs in stellar nucleosynthesis models to explain observed nuclear abundances. While current models continue to use terrestrial values, experiments in storage rings indicate strong divergence between decay rates of neutral ...
Mishra Bharat
doaj   +1 more source

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