星系

As a first step, a team led by Chris Carilli of the National Radio Astronomy Observatory in Socorro, New Mexico, and Dominik Riechers of the California Institute of Technology in Pasadena set about trying to establish whether black holes lead galaxy growth or vice versa.

首先，由新墨西哥州索科罗市美国国家射电天文台的克里斯·卡里利和帕萨迪纳市加州理工学院的多米尼克·里彻斯带领着一个研究小组，着手确定是黑洞的形成先于星系，还是恰恰相反。

Astronomers think that about 2 solar masses of gas per year are transformed into stars in this galaxy.

天文学家认为，这个星系中的气体以每年2个太阳质量的速率形成恒星。

An equation, formula( 3 ), and an analytic solution of it, formula, are derived Using formula( 5 ) and a data set obtained from etc., the luminosity function of nearby galaxies is calculated; and A comparison of our result with and[ 8 ] is made.

得到了一个方程，式(3)；和这个方程的一个分析解，式(5)。应用公式(5)和由[11]等得来的一组资料，计算出附近星系的光度函数。

This brilliant galaxy was named the Sombrero because of its resemblance to the broad rim and high-topped Mexican hat.

这个明亮的星系被命名为阔边帽是因为它很像有着宽边的墨西哥草帽。

Why does the Sombrero Galaxy look like a hat?

为什麼草帽星系看起来像一顶帽子呢？

The very center of the Sombrero glows across the electromagnetic spectrum, and is thought to house a large black hole.

草帽星系的中心在所有电磁波波段都很明亮，因此一般认为那儿藏著一颗大质量黑洞。

Explanation: Why does the Sombrero Galaxy look like a hat?

說明： 为什么草帽星系看起来像一顶帽子呢？

Fifty million-year-old light from the Sombrero Galaxy can be seen with a small telescope towards the constellation of Virgo.

草帽星系位在黄道的处女座內，用小型望远镜就能看见这团大约在五千万年前发出的光芒。

That same rim of dust appears bright in Spitzer's infrared image, which also reveals that Sombrero's central bulge of stars.

这条尘埃带在斯必泽的红外图象中呈明亮的条带。红外图象中亦可见草帽星系由恒星组成的核球。

The dark dust lane and the bulge give this galaxy the appearance of a sombrero.

外围相对暗淡的一圈尘埃和中心巨大的凸起使这个星系看起来向一个宽边帽。

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。