Evidence for feedback and stellar-dynamically regulated bursty star cluster formation: the case of the Orion Nebula Cluster
Evidence for feedback and stellar-dynamically regulated bursty star cluster formation: the case of the Orion Nebula Cluster
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反馈和恒星动力学调节的爆发性星团形成的证据:猎户座星云团的案例
DOI:
10.1051/0004-6361/201732151
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发表时间:
2018
影响因子:
6.5
通讯作者:
Zhiqiang Yan
中科院分区:
文献类型:
--
作者:
P. Kroupa;T. Jeřábková;F. Dinnbier;G. Beccari;Zhiqiang Yan
(abridged) A scenario for the formation of multiple co-eval populations separated in age by about 1 Myr in very young clusters (VYCs, ages less than 10 Myr) and with masses in the range 600-20000 Msun is outlined. It rests upon a converging inflow of molecular gas building up a first population of pre-main sequence stars. The associated just-formed O stars ionise the inflow and suppress star formation in the embedded cluster. However, they typically eject each other out of the embedded cluster within 10^6 yr, that is before the molecular cloud filament can be ionised entirely. The inflow of molecular gas can then resume forming a second population. This sequence of events can be repeated multiply. This model is applied to the Orion Nebula Cluster (ONC), in which three well-separated pre-main sequences in the color-magnitude diagram of the cluster have recently been discovered. The mass-inflow history is constrained using this model and the number of OB stars ejected from each population are estimated for verification using Gaia data. As a consequence of the proposed model, the three runaway O star systems, AE Aur, mu Col and iota Ori, are considered as significant observational evidence for stellar-dynamical ejections of massive stars from the oldest population in the ONC.
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影响因子:
6.5
作者:
Nina Brinkmann;S. Banerjee;Bhawna Motwani;P. Kroupa
通讯作者:
Nina Brinkmann;S. Banerjee;Bhawna Motwani;P. Kroupa
DOI:
10.1051/0004-6361/201628233
发表时间:
2016
期刊:
arXiv: Astrophysics of Galaxies
影响因子:
--
作者:
Kroupa
通讯作者:
Kroupa
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.
影响因子:
6.5
作者:
K. Menten;M. Reid;J. Forbrich;J. Forbrich;A. Brunthaler
通讯作者:
K. Menten;M. Reid;J. Forbrich;J. Forbrich;A. Brunthaler
DOI:
10.1088/0004-637x/805/2/92
发表时间:
2015
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Kroupa;Pflamm-Altenburg
通讯作者:
Pflamm-Altenburg