造父变星

By observing Cepheids with very similar properties at near-infrared wavelengths in all seven galaxies, and using the same telescope and instrument, the team was able to more precisely calibrate the luminosity of supernovae.

通过很相似的方法，在全部7个星系中用相同的望远镜和仪器，在近红外波段观测造父变星和超新星，团队能够更加精确地校准Ia超新星的光度。

The Cepheids are used to calibrate an even brighter milepost marker that can be used over greater distances, a Type Ia supernova.

造父变星也用于校准可测量极遥远距离的更亮的标准尺——Ia型超新星。

The mechanics of the pulsation as a heat-engine was proposed in 1917 by Arthur Stanley Eddington (who wrote at length on the dynamics of Cepheids), but it was not until 1953 that S.

1917年，亚瑟·斯坦利·爱丁顿首次提出了脉动的热能引擎驱动机制（见其所著的《造父变星动力学》书中），但直到1953年， S。

The new technique reduced the distance ladder to three "rungs":(1) The distance to galaxy NGC4258 is measured using straightforward geometry and Kepler's laws;(2)Cepheids in six more distant galaxies are used to calibrate the luminosity of Type Ia supernovae;(3) The Hubble constant is measured by observing a brighter milepost marker, Type Ia supernovae, in more distant galaxies hundreds of millions of light-years away, embedded in the expanding universe.

这种新技巧简化了距离跳跃为三个&阶梯&：1、星系NGC 4258的距离采用开普勒定律和简单直接的几何方法精确测量；2、在6个更远的星系中的造父变星用来校准Ia超新星的光度；3、深嵌于数亿光年外的膨胀宇宙中的星系中的Ia超新星——一种遥远而明亮的量天尺，被用于精确测定哈勃常数。

The accepted explanation for the pulsation of Cepheids is called the Eddington valve, or κ-mechanism, where the Greek letter κ denotes gas opacity.

造父变星脉动机制公认的解释是：爱丁顿阀，或称为κ-机制，希腊字母κ表示气体的不透明度。

This makes space telescope invaluable for identifying a rare class of pulsating stars, called Cepheid Variable stars embedded within M100';s spiral arms.

这对于从M100的旋臂中分辨出暗藏的造父变星有着莫大价值。

At select host galaxies, Cepheid variable stars — known as reliable milepost markers — are cross-calibrated toType Ia supernovae in the same host galaxy.

在选定的宿主星系，具有可靠距离标识的造父变星，用于校准同一个星系中的Ia超新星。

Cepheid variable stars – a class of stars named in honor of Delta Cephei – serve as cosmic yardsticks, enabling astronomers to measure the distances to faraway galaxies.

造父变星——以无尚荣誉的Delta Cephei——充当宇宙的标尺，使得天文学家可以测量更为遥远银河星系。

Cepheid variable stars – a class of stars named in honor of Delta Cephei – serve as cosmic yardsticks, enabling astronomers to measure the distances to faraway galaxies.

造父变星——是一类根据仙王座δ起名的星星——被作为宇宙尺子，使天文学家能够用它们来测量到遥远星系的距离。

Cepheid variable stars – a class of stars named in honor of Delta Cephei – serve as cosmic yardsticks, enabling astronomers to measure the distances to faraway galaxies.

造父变星，以仙王座δ为代表的群星，就像宇宙的尺度，可以让宇航员用来测量距银河的距离。戴博莱。白瑞德著

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。