The Origin of OB Runaway Stars
The Origin of OB Runaway Stars
复制标题
OB逃亡明星的由来
作者:
Fujii;M.S.;Portegies Zwart;S.
About 20% of all massive stars in the Milky Way have unusually high velocities, the origin of which has puzzled astronomers for half a century. We argue that these velocities originate from strong gravitational interactions between single stars and binaries in the centers of star clusters. The ejecting binary forms naturally during the collapse of a young (≲1 milion years old) star cluster. This model replicates the key characteristics of OB runaways in our galaxy, and it explains the presence of runaway stars of ≳100 solar masses (M☉) around young star clusters, such as R136 and Westerlund 2. The high proportion and the distributions in mass and velocity of runaways in the Milky Way are reproduced if the majority of massive stars are born in dense and relatively low-mass (5000 to 10,000M☉) clusters.
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影响因子:
6.5
作者:
V. Gvaramadze;V. Gvaramadze;V. Gvaramadze;J. Pflamm;P. Kroupa
通讯作者:
P. Kroupa
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
O. Schnurr;O. Schnurr;A. Moffat;A. Villar;N. St;N. Morrell
通讯作者:
N. Morrell
影响因子:
2
作者:
S. Ortolani;C. Bonatto;E. Bica;Y. Momany;B. Barbuy
通讯作者:
B. Barbuy
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
O. Schnurr;O. Schnurr;J. Casoli;J. Casoli;A. Chené;A. Chené;A. F. J. Moffat;N. St
通讯作者:
N. St
DOI:
10.1017/s174392131101115x
发表时间:
2010
期刊:
Proceedings of the International Astronomical Union
影响因子:
--
作者:
A. Chené;O. Schnurr;P. Crowther;E. Lajus;A. Moffat
通讯作者:
A. Moffat