THE PROPERTIES OF DYNAMICALLY EJECTED RUNAWAY AND HYPER-RUNAWAY STARS

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10129557" target="_blank" >RIV/00216208:11320/12:10129557 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/0004-637X/751/2/133" target="_blank" >http://dx.doi.org/10.1088/0004-637X/751/2/133</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0004-637X/751/2/133" target="_blank" >10.1088/0004-637X/751/2/133</a>

Result language

angličtina

Original language name

THE PROPERTIES OF DYNAMICALLY EJECTED RUNAWAY AND HYPER-RUNAWAY STARS

Original language description

Runaway stars are stars observed to have large peculiar velocities. Two mechanisms are thought to contribute to the ejection of runaway stars, both of which involve binarity (or higher multiplicity). In the binary supernova scenario, a runaway star receives its velocity when its binary massive companion explodes as a supernova (SN). In the alternative dynamical ejection scenario, runaway stars are formed through gravitational interactions between stars and binaries in dense, compact clusters or clustercores. Here we study the ejection scenario. We make use of extensive N-body simulations of massive clusters, as well as analytic arguments, in order to characterize the expected ejection velocity distribution of runaway stars. We find that the ejection velocity distribution of the fastest runaways (upsilon greater than or similar to 80 km s(-1)) depends on the binary distribution in the cluster, consistent with our analytic toy model, whereas the distribution of lower velocity runaways a

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

—

Project

<a href="/en/project/GA202%2F09%2F0772" target="_blank" >GA202/09/0772: Current problems of gravitation, general relativity and relativistic astrophysics</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astrophysical Journal

ISSN

0004-637X

e-ISSN

—

Volume of the periodical

751

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

—

UT code for WoS article

000304204600054

EID of the result in the Scopus database

—