• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Astronomical Union >Can satellite dwarfs excite galactic warps?
【24h】

Can satellite dwarfs excite galactic warps?

机译：卫星矮人可以激发银河系吗？

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We present a series of N-body simulations examining the tidal impact of satellitedwarfs on galactic disks, in particular on the abilities of satellites to excite warps like the oneseen in the disk of the Milky Way. We have examined satellites with masses spanning 1.5 ordersof magnitude, ranging from the Sgr dSph to the LMC. Orbits similar to the eccentric polar orbitof Sgr were examined, along with orbits of intermediate inclination and of lower eccentricity.The fundamental physical processes which govern the transfer of angular momentum betweenthe satellite and disk, and within the disk, are identified to be precession of the satellite orbit,shrinking of the satellite orbit due to dynamical friction, warping of the disk within a slewingpotential, and differential precession. We find that although very large satellites can tidally excitewarps shortly after each perigalactic passage, the effects of such satellites are quite destructiveand the resulting disks have smaller warps and appear more disturbed than the disks of theMilky Way and other strongly-warped galaxies. Smaller satellites, however, may be capable ofproducing the minor warps typical of many disk galaxies.
机译：我们提出了一系列N身体模拟，检查了Satellitedwarfs对银河磁盘上的潮汐影响，特别是卫星在银河盘盘中像羊毛的能力一样刺激刺激的能力。我们已经检查了具有跨越1.5级幅度的肿块的卫星，从SGR DSPH到LMC。检查类似于偏心极性替代SGR的轨道，以及中间倾斜的轨道和较低的偏心。识别出卫星和盘之间的角动量转移的基本物理过程，被确定为备忘录卫星轨道，由于动态摩擦，卫星轨道的缩小，圆盘的翘曲，在一个弹出的光圈内，差分进出。我们发现，尽管在每次临时通道后，虽然非常大的卫星可以很快地为Excitewarps进行整个卫星，但这种卫星的效果是相当毁坏的，所得磁盘具有较小的扭曲，并且看起来比Themilky方式的磁盘更令人不安，并且似乎更受到的主题方式和其他强烈扭曲的星系。然而，较小的卫星可能能够进行许多磁盘星系的典型次要扭曲。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号