Dynamical Friction on Satellite Galaxies

Fujii Michiko; Funato Yoko; Makino Junichiro

首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Dynamical Friction on Satellite Galaxies

【24h】

Dynamical Friction on Satellite Galaxies

机译：卫星星系的动力摩擦

获取原文

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

Forarigidmodelsatellite,Chandrasekhara€?sdynamicalfrictionformuladescribestheorbitalevolutionquiteaccurately,whentheCoulomblogarithmischosenappropriately.However,itisnotknowniftheorbitalevolutionofarealsatellitewiththeinternaldegreeoffreedomcanbedescribedbythedynamicalfrictionformula.Weperformedan$$N$$-bodysimulationoftheorbitalevolutionofaself-consistentsatellitegalaxywithinaself-consistentparentgalaxy.Wefoundthattheorbitaldecayofthesimulatedsatelliteissignificantlyfasterthananestimatefromthedynamicalfrictionformula.Themaincauseofthisdiscrepancyisthatthestarsstrippedoutofthesatellitearestillclosetothesatellite,andincreasethedragforceonthesatellitethroughtwomechanisms.Oneisadirectdragforcefromparticlesinthetrailingtidalarm,anon-axisymmetricforcethatslowsthesatellitedown.Theotherisanindirecteffectthatiscausedbytheparticlesremainingclosetothesatelliteafterescaping.Theforcefromthemenhancesthewakecausedintheparentgalaxybydynamicalfriction,andthislargerwakeinturnslowsthesatellitedownmorethanexpectedfromthecontributionofitsboundmass.Wefoundthatthesetwohavecomparableeffects,andthatthecombinedeffectcanbeaslargeas20%ofthetotaldragforceonthesatellite.

机译：Forarigidmodelsatellite，钱德拉塞卡拉€sdynamicalfrictionformuladescribestheorbitalevolutionquiteaccurately，whentheCoulomblogarithmischosenappropriately.However，itisnotknowniftheorbitalevolutionofarealsatellitewiththeinternaldegreeoffreedomcanbedescribedbythedynamicalfrictionformula.Weperformedan $$ñ$$ - bodysimulationoftheorbitalevolutionofaself-consistentsatellitegalaxywithinaself-consistentparentgalaxy.Wefoundthattheorbitaldecayofthesimulatedsatelliteissignificantlyfasterthananestimatefromthedynamicalfrictionformula.Themaincauseofthisdiscrepancyisthatthestarsstrippedoutofthesatellitearestillclosetothesatellite，andincreasethedragforceonthesatellitethroughtwomechanisms.Oneisadirectdragforcefromparticlesinthetrailingtidalarm，匿名-axisymmetricforcethatslowsthesatellitedown.Theotherisanindirecteffectthatiscausedbytheparticlesremainingclosetothesatelliteafterescaping.Theforcefromthemenhancesthewakecausedintheparentgalaxybydynamicalfriction，andthislargerwakeinturnslowsthesatellitedownmoretha我们发现这两个具有可比的效果，并且组合的效果可能占卫星总拉力的20％。

著录项

来源
《PASJ: Publications of the Astronomical Society of Japan》 |2006年第4期|共页
作者
Fujii Michiko; Funato Yoko; Makino Junichiro;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种
中图分类天文学;
关键词

相似文献

外文文献
中文文献
专利

1. Dynamical friction on satellite galaxies [J] . Fujii M, Funato Y, Makino J PASJ: Publications of the Astronomical Society of Japan . 2006,第4期

机译：卫星星系上的动摩擦
2. Dynamical Friction on Satellite Galaxies [J] . Fujii Michiko, Funato Yoko, Makino Junichiro PASJ: Publications of the Astronomical Society of Japan . 2006,第4期

机译：卫星星系的动力摩擦
3. The Dynamics of Sinking Satellites around Disk Galaxies: A Poor Man’s Alternative to High-Resolution Numerical Simulations [J] . James E. Taylor1, Arif Babul1 The Astrophysical journal . 2008,第2期

机译：圆盘星系附近下沉卫星的动力学：高分辨率数值模拟的穷人选择
4. Shell Galaxies: Dynamical Friction, Gradual Satellite Decay and Merger Dating [C] . Ivana Ebrova, Bruno Jungwiert, Gabriela Canalizo, Conference on Galaxy Wars . 2010

机译：贝壳星系：动态摩擦，渐进卫星衰减和合并约会
5. The Shape and Dynamics of Galaxy Clusters and Evolution of Their Satellite Galaxies [D] . Shin, Tae-hyeon. 2020

机译：星系集群的形状和动态及其卫星星系的演化
6. Apparent nonlinearity of the redshift-distance relation in infrared astronomical satellite galaxy samples. [O] . I E Segal, J F Nicoll 1992

机译：红外天文卫星星系样本中红移距离关系的表观非线性。
7. Shell galaxies: kinematical signature of shells, satellite galaxy disruption and dynamical friction [O] . Ebrova, Ivana 2013

机译：壳星系：贝壳的运动特征，卫星星系破坏和动力摩擦
8. Dynamical friction in pairs of elliptical galaxies [R] . Prugniel, Philippe, Combes, Francoise 1990

机译：成对椭圆星系的动摩擦

Dynamical Friction on Satellite Galaxies

摘要

著录项

相似文献

相关主题

期刊订阅