星系

How this wonderful system started and what kept it working with such wonderful accuracy is largely a mystery but astronomers tell us that it is only one of millions of similar systems in spece ,and one of the smallest.

这个奇妙的星系是怎样开始的，什么使它保持精确地运行，这是一个很大的迷。但是天文学家告诉我们太阳系只是太空里几百万个相似的星系中的一个而且是最小的一个。

After a cross-identification between the photometric data obtained from the BATC and SDSS, a catalog containing 1553 galaxies down to r'=20.0 mag is achieved, which includes 121 spectroscopically confirmed member galaxies.

通过BATC和SDSS星表的交叉证认，得到了一个极限星等r'=20.0mag，包含1553个星系的星表，其中有121个通过分光红移证认的成员星系。

The strange shapes of these cosmic misfits help researchers understand how galaxies interact,evolve and occasionally "cannibalise" each other, leaving behind radiant, star-filled scraps.

这种奇异的、不对称的外形，有助于研究者了解星系间的相互作用和演化，有时星系会互相吞并，并留下满是恒星的发光碎片。

The strange shapes of these cosmic misfits help researchers understand how galaxies interact,evolve and occasionally "cannibalise" each other, leaving behind radiant, star-filled scraps.

这种奇异的、不对称的外形，有助于研究者了解星系间的相互作用和演化，有时星系会互相吞并，并留下满是恒星的发光碎片。原创翻译！牧夫币+ 15

At the center of the starburst rings is the Seyfert nucleus, the believed signature of a supermassive black hole that is accreting surrounding gas and dust.

人们相信，在赛费特星系的中心，存在黑洞，依据就是环绕着星系的气体和灰尘。

This region, which is the projection of a three-dimensional cone extending from the nucleus to the galaxy's halo, contains gas that has been heated by radiation emitted by the accreting black hole.

通过狭窄的滤镜，&V&字形的结构显得十分清晰：一个三维锥体的投影的区域从这个星系的中心一直延伸到星系的晕，当然，在这个锥体里，包含着被依附着的黑洞的辐射所加热的气体。

A "global" starburst like NGC 4449 resembles primordial star forming galaxies which grew by merging with and accreting smaller stellar systems.

像 NGC4449 这样的整体星暴类似于最原始的恒星形成星系，这些星系通过与较小恒星系统的合并和共生来成长起来。

These binaries can turn off for decades, and new ones are always being found.

这些双子星系可以在几十年的时间内消失，同时一些新的双子星系也经常被发现。

In sharp contrast to bulges, the properties of disk galaxies do not correlate with BH masses.

与椭圆星系形成鲜明对比，漩涡星系的特质与黑洞质量没有直接联系。

At least in the nearby universe, gas dissipation is required to produce the high densities observed in bulges out of the low densities in disks.

至少在邻近的宇宙，气体的消散是必需的，以此来形成椭圆星系的高密度和漩涡星系的低密度。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。