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The Long-term Evolution of Star Clusters Formed with a Centrally Peaked Star Formation Efficiency Profile

文献类型：期刊论文

作者Shukirgaliyev, Bekdaulet2,3,6; Parmentier, Genevieve2; Just, Andreas2; Berczik, Peter1,4,5
刊名ASTROPHYSICAL JOURNAL
出版日期2018-08-20
卷号863期号:2页码:13
关键词galaxies: star clusters: general methods: numerical open clusters and associations: general solar neighborhood stars: kinematics and dynamics
ISSN号0004-637X
DOI10.3847/1538-4357/aad3bf
英文摘要We have studied the long-term evolution of star clusters of the solar neighborhood, starting from their birth in gaseous clumps until their complete dissolution in the Galactic tidal field. We have combined the "local-density-driven cluster formation model" of Parmentier & Pfalzner with direct N-body simulations of clusters following instantaneous gas expulsion. We have studied the relation between cluster dissolution time, tdis, and cluster "initial" mass, Minit, defined as the cluster mass at the end of the dynamical response to gas expulsion (i.e., violent relaxation), when the cluster age is 20-30 Myr. We consider the "initial" mass to be consistent with other works that neglect violent relaxation. The model clusters formed with a high star formation efficiency (SFE, i.e., gas mass fraction converted into stars) follow a tight mass-dependent relation, in agreement with previous theoretical studies. However, the low-SFE models present a large scatter in both the "initial" mass and the dissolution time, a shallower mass-dependent relation than high-SFE clusters, and most dissolve within 1 Gyr (cluster teenage mortality). Both groups differ in their structural properties on average. Combining two populations of clusters, high-and low-SFE ones, with domination of the latter, yields a cluster dissolution time for the solar neighborhood in agreement with that inferred from observations, without any additional destructive processes such as giant molecular cloud encounters. An apparent mass-independent relation may emerge for our low-SFE clusters when we neglect low-mass clusters (as expected for extragalactic observations), although more simulations are needed to investigate this aspect.
WOS关键词DISRUPTION TIME-SCALES ; GLOBULAR-CLUSTERS ; MOLECULAR CLOUDS ; ANTENNAE GALAXIES ; STELLAR CLUSTERS ; TIDAL FIELDS ; MASS ; DISSOLUTION ; MECHANISMS ; LIFETIMES
资助项目Sonderforschungsbereich SF13 881 "The Milky Way System" (subproject B2) of the German Research Foundation (DFG) ; PCF program of the Republic of Kazakhstan[BR05336383] ; National Astronomical Observatories of Chinese Academy of Sciences (NAOC/CAS) through the Silk Road Project through the Thousand Talents ("Qianren") program ; Volkswagen Foundation[90411] ; NASU under the Main Astronomical Observatory GRID/GPU computing cluster project ; International Space Science Institute, Bern, Switzerland, through its International Team program[393] ; KEPLER GPU cluster - Volkswagen foundation[INST 35/1134-1 FUGG] ; KEPLER GPU cluster - Volkswagen foundation[SF13 881] ; KEPLER GPU cluster - Volkswagen foundation[1/81 396] ; NAOC/CAS (LAOHU at Center of Information and Computing)
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000442628400007
出版者IOP PUBLISHING LTD
资助机构Sonderforschungsbereich SF13 881 "The Milky Way System" (subproject B2) of the German Research Foundation (DFG) ; Sonderforschungsbereich SF13 881 "The Milky Way System" (subproject B2) of the German Research Foundation (DFG) ; PCF program of the Republic of Kazakhstan ; PCF program of the Republic of Kazakhstan ; National Astronomical Observatories of Chinese Academy of Sciences (NAOC/CAS) through the Silk Road Project through the Thousand Talents ("Qianren") program ; National Astronomical Observatories of Chinese Academy of Sciences (NAOC/CAS) through the Silk Road Project through the Thousand Talents ("Qianren") program ; Volkswagen Foundation ; Volkswagen Foundation ; NASU under the Main Astronomical Observatory GRID/GPU computing cluster project ; NASU under the Main Astronomical Observatory GRID/GPU computing cluster project ; International Space Science Institute, Bern, Switzerland, through its International Team program ; International Space Science Institute, Bern, Switzerland, through its International Team program ; KEPLER GPU cluster - Volkswagen foundation ; KEPLER GPU cluster - Volkswagen foundation ; NAOC/CAS (LAOHU at Center of Information and Computing) ; NAOC/CAS (LAOHU at Center of Information and Computing) ; Sonderforschungsbereich SF13 881 "The Milky Way System" (subproject B2) of the German Research Foundation (DFG) ; Sonderforschungsbereich SF13 881 "The Milky Way System" (subproject B2) of the German Research Foundation (DFG) ; PCF program of the Republic of Kazakhstan ; PCF program of the Republic of Kazakhstan ; National Astronomical Observatories of Chinese Academy of Sciences (NAOC/CAS) through the Silk Road Project through the Thousand Talents ("Qianren") program ; National Astronomical Observatories of Chinese Academy of Sciences (NAOC/CAS) through the Silk Road Project through the Thousand Talents ("Qianren") program ; Volkswagen Foundation ; Volkswagen Foundation ; NASU under the Main Astronomical Observatory GRID/GPU computing cluster project ; NASU under the Main Astronomical Observatory GRID/GPU computing cluster project ; International Space Science Institute, Bern, Switzerland, through its International Team program ; International Space Science Institute, Bern, Switzerland, through its International Team program ; KEPLER GPU cluster - Volkswagen foundation ; KEPLER GPU cluster - Volkswagen foundation ; NAOC/CAS (LAOHU at Center of Information and Computing) ; NAOC/CAS (LAOHU at Center of Information and Computing) ; Sonderforschungsbereich SF13 881 "The Milky Way System" (subproject B2) of the German Research Foundation (DFG) ; Sonderforschungsbereich SF13 881 "The Milky Way System" (subproject B2) of the German Research Foundation (DFG) ; PCF program of the Republic of Kazakhstan ; PCF program of the Republic of Kazakhstan ; National Astronomical Observatories of Chinese Academy of Sciences (NAOC/CAS) through the Silk Road Project through the Thousand Talents ("Qianren") program ; National Astronomical Observatories of Chinese Academy of Sciences (NAOC/CAS) through the Silk Road Project through the Thousand Talents ("Qianren") program ; Volkswagen Foundation ; Volkswagen Foundation ; NASU under the Main Astronomical Observatory GRID/GPU computing cluster project ; NASU under the Main Astronomical Observatory GRID/GPU computing cluster project ; International Space Science Institute, Bern, Switzerland, through its International Team program ; International Space Science Institute, Bern, Switzerland, through its International Team program ; KEPLER GPU cluster - Volkswagen foundation ; KEPLER GPU cluster - Volkswagen foundation ; NAOC/CAS (LAOHU at Center of Information and Computing) ; NAOC/CAS (LAOHU at Center of Information and Computing) ; Sonderforschungsbereich SF13 881 "The Milky Way System" (subproject B2) of the German Research Foundation (DFG) ; Sonderforschungsbereich SF13 881 "The Milky Way System" (subproject B2) of the German Research Foundation (DFG) ; PCF program of the Republic of Kazakhstan ; PCF program of the Republic of Kazakhstan ; National Astronomical Observatories of Chinese Academy of Sciences (NAOC/CAS) through the Silk Road Project through the Thousand Talents ("Qianren") program ; National Astronomical Observatories of Chinese Academy of Sciences (NAOC/CAS) through the Silk Road Project through the Thousand Talents ("Qianren") program ; Volkswagen Foundation ; Volkswagen Foundation ; NASU under the Main Astronomical Observatory GRID/GPU computing cluster project ; NASU under the Main Astronomical Observatory GRID/GPU computing cluster project ; International Space Science Institute, Bern, Switzerland, through its International Team program ; International Space Science Institute, Bern, Switzerland, through its International Team program ; KEPLER GPU cluster - Volkswagen foundation ; KEPLER GPU cluster - Volkswagen foundation ; NAOC/CAS (LAOHU at Center of Information and Computing) ; NAOC/CAS (LAOHU at Center of Information and Computing)
源URL[http://ir.bao.ac.cn/handle/114a11/22473]  
专题中国科学院国家天文台
通讯作者Shukirgaliyev, Bekdaulet
作者单位1.Chinese Acad Sci, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100012, Peoples R China
2.Heidelberg Univ, Zentrum Astron, Astron Rechen Inst, Monchhofstr 12-14, D-69120 Heidelberg, Germany
3.Fesenkov Astrophys Inst, Observ Str 23, Alma Ata 050020, Kazakhstan
4.Chinese Acad Sci, Natl Astron Observ China, 20A Datun Rd, Beijing 100012, Peoples R China
5.Natl Acad Sci Ukraine, Main Astron Observ, 27 Akademika Zabolotnoho St, UA-03680 Kiev, Ukraine
6.Heidelberg Univ, IMPRS HD, Int Max Planck Res Sch Astron & Cosm Phys, Heidelberg, Germany
推荐引用方式
GB/T 7714		 Shukirgaliyev, Bekdaulet,Parmentier, Genevieve,Just, Andreas,et al. The Long-term Evolution of Star Clusters Formed with a Centrally Peaked Star Formation Efficiency Profile[J]. ASTROPHYSICAL JOURNAL,2018,863(2):13.
APA Shukirgaliyev, Bekdaulet,Parmentier, Genevieve,Just, Andreas,&Berczik, Peter.(2018).The Long-term Evolution of Star Clusters Formed with a Centrally Peaked Star Formation Efficiency Profile.ASTROPHYSICAL JOURNAL,863(2),13.
MLA Shukirgaliyev, Bekdaulet,et al."The Long-term Evolution of Star Clusters Formed with a Centrally Peaked Star Formation Efficiency Profile".ASTROPHYSICAL JOURNAL 863.2(2018):13.

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