metallicity

metallicity

美 [mɪtæ'lɪsɪtɪ] 　英 [mɪtæ'lɪsɪtɪ]

• 网络金属度；金属性；金属丰度

英汉解释

n.	1. the amount of a specific metal contained in something such as a star, galaxy, or composite material.

例句

We found a negative correlation between a star's metallicity and its jitteriness.

我们发现在一颗恒星的金属含量和其波动性之间存在一个负相关。

Thus, the disc begins its existence with a steep metallicity gradient, like the one in the distant galaxy in Leo.

因此，主盘在形成伊始有一个很大的丰度梯度，就像遥远的狮子座里的那个星系那样。

Because stars congregate at a galaxy's centre, the metallicity in most nearby spirals is greatest there and drops toward the edge.

因为恒星聚集在星系的中心，其附近的金属丰度最高并沿边缘方向逐渐降低。

This thesis points out the defects of the present definition of metallicity , and sets forth certain new understanding on metallicity .

文章指出现时对金属性定义的缺陷，并提出了对金属性的新认识。

In this model, a mass of gas collapses and creates lots of stars at the disc's centre, where the stars quickly boost the metallicity.

在这个模型下，一大团气体坍缩并在主盘中心形成大量恒星，它们在那里迅速增加着金属丰度。

Because we see the galaxy when it was young, this result suggests spiral discs start off with steep metallicity gradients.

因为我们看到的它还处于早期，这个结果表明螺旋星系主盘开始时有着很大的金属丰度梯度。

Then, over billions of years, stars develop in the outer regions, raising the metallicity there and flattening the gradient.

随后，在亿万年间，恒星发展到外部趋于，提高了外围的金属丰度，因而使得梯度降低了。

Different theories predict how this metallicity gradient changes over billions of years.

已有几种不同的理论对金属丰度梯度在亿万年间如何变化作了推测。

However, because few stars form on the disc's outskirts, the metallicity there stays low.

然而，因为主盘外围只有少量恒星，那里的金属丰度比较低。

One clue comes from the metallicity of the disc's constituent stars.

一条线索来自于主盘内恒星的金属丰度。

Further analysis has been made on the inangpropriateness of certain distinctive scales on metallicity.

文章还对金属性的某些判别标度的不妥之处进行了分析。

The metallicity distributions imply three probable epochs of globular cluster formation corresponding to three kinds of formation models.

球状星团金属度的分布表明球状星团可能有三个形成时期，分别与三类形成模型对应；

Three generations of stars may exist based on metallicity.

以金属度划分，恒星有三个世代。

It is known that solar-type stars with high metallicity have a high probability of hosting planets.

因此，高金属性的类太阳恒星很有可能被行星绕转。

New Progress in Galactic Metallicity and its Evolution

银河系金属丰度及其演化研究新进展

Metallicity vs Rotation Velocity in Late-Type Galaxies

晚型星系金属丰度与自转速度的关系

Age-Metallicity Relation of Stars in the Galactic Thick Disk

银河系厚盘恒星的年龄-金属度关系