R144: a very massive binary likely ejected from R136 through a binary–binary encounter
R144: a very massive binary likely ejected from R136 through a binary–binary encounter
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R144:一个非常巨大的双星,可能通过双星相遇从 R136 中喷出
DOI:
10.1093/mnras/stt2219
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发表时间:
2014
影响因子:
4.8
通讯作者:
Banerjee
中科院分区:
文献类型:
--
作者:
Kroupa;Banerjee
R144 is a recently confirmed very massive, spectroscopic binary which appears isolated from the core of the massive young star cluster R136. The dynamical ejection hypothesis as an origin for its location is claimed improbable by Sana et al. due to its binary nature and high mass. We demonstrate here by means of directN-body calculations that a very massive binary system can be readily dynamically ejected from an R136-like cluster, through a close encounter with a very massive system. One out of fourN-body cluster models produces a dynamically ejected very massive binary system with a mass comparable to R144. The system has a system mass of ≈355 M⊙and is located at 36.8 pc from the centre of its parent cluster, moving away from the cluster with a velocity of 57 km s−1at 2 Myr as a result of a binary–binary interaction. This implies that R144 could have been ejected from R136 through a strong encounter with another massive binary or single star. In addition, we discuss all massive binaries and single stars which are ejected dynamically from their parent cluster in theN-body models.
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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
DOI:
10.1088/0004-637x/746/1/15
发表时间:
2011-11
期刊:
The Astrophysical Journal
影响因子:
--
作者:
S. Banerjee;P. Kroupa;Seungkyung Oh
通讯作者:
S. Banerjee;P. Kroupa;Seungkyung Oh
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
H. Baumgardt;G. de Marchi;P. Kroupa
通讯作者:
P. Kroupa
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
H. Sana;T. Boeckel;F. Tramper;L. Ellerbroek;A. D. Koter;A. D. Koter;A. D. Koter;L. Kaper;A. Moffat;O. Schnurr;F. Schneider;D. Gies
通讯作者:
D. Gies
影响因子:
56.9
作者:
H. Sana;S. D. Mink;A. D. Koter;N. Langer;C. Evans;M. Gieles;E. Gosset;R. Izzard;J. L. Bouquin-J.
通讯作者:
H. Sana;S. D. Mink;A. D. Koter;N. Langer;C. Evans;M. Gieles;E. Gosset;R. Izzard;J. L. Bouquin-J.