我們只是近距離看了一個奇怪的“高爾夫球小行星”

我們只是近距離看了一個奇怪的“高爾夫球小行星”

In 1802, German astronomer Heinrich Olbers observed what he thought was a planet within the Main Asteroid Belt.

1802年,德國天文學家海因裡希·奧爾伯斯(Heinrich Olbers)觀察到了他認為是位於主小行星帶內的一顆行星。

In time, astronomers would come to name this body Pallas, an alternate name for the Greek warrior goddess Athena.

隨著時間的推移,天文學家將這個身體命名為帕拉斯,希臘武士女神雅典娜的另一個名字。

The subsequent discovery of many more asteroids in the Main Belt would lead to Pallas being reclassified as a large asteroid, the third-largest in the Belt after Ceres and Vesta.

隨後在主帶發現更多的小行星將導致帕拉斯被重新歸類為一顆大型小行星,這是該帶中的第三大小行星,僅次於“穀神星”和“灶神星”。

For centuries, astronomers have sought to get a better look at Pallas to learn more about its size, shape, and composition.

幾個世紀以來,天文學家一直試圖更好地觀察帕拉斯,以瞭解更多關於它的大小、形狀和組成的信息。

As of the turn of the century, astronomers had come to conclude that it was an oblate spheroid (an elongated sphere).

在世紀之交,天文學家已經得出結論,它是一個扁球體(一個細長的球體)。

Thanks to a new study by an international team, the first detailed images of Pallas have finally been taken, which reveal that its shape is more akin to a "golf ball" – i.e.

多虧了一個國際團隊的一項新研究,帕拉斯的第一張詳細圖像終於被拍攝出來了,這表明它的形狀更像是一個“高爾夫球”-也就是說。

heavily dimpled.

嚴重的酒窩。

Pierre Vernazza of the Laboratoire d'Astrophyisque de Marseille in France was the principal investigator of the team, which included members from 21 research institutions from around the world.

法國馬賽天體物理研究所的Pierre Vernazza是該團隊的首席調查員,該團隊包括來自世界各地21個研究機構的成員。

Michaël Marsset, a postdoctoral associate with MIT's Department of Earth, Atmospheric and Planetary Sciences, was the lead author on the study (which recently appeared in the journal Nature Astronomy).

Michaël Marsset是麻省理工學院地球、大氣和行星科學系的博士後同事,他是這項研究的主要作者(最近發表在“自然天文學”雜誌上)。

For centuries, astronomers have known that Pallas orbits along a highly tilted orbit compared to the majority of objects in the Main Asteroid Belt.

幾個世紀以來,天文學家已經知道,與主要小行星帶中的大多數天體相比,Pallas的軌道是沿著高度傾斜的軌道運行的。

Whereas most of these objects follow the same roughly elliptical path around the Sun and have orbital inclinations of less than 30°, Pallas orbit is inclined 34.837° relative to the Solar plane (for reasons that have remained a mystery).

儘管大多數這些天體都沿著同樣的大致橢圓軌道繞太陽運行,軌道傾角小於30°,但帕拉斯軌道相對於太陽平面傾斜34.837°(原因至今仍是一個謎)。

For the sake of their study, Vernazza and his team obtained 11 images of Pallas that were acquired by the Spectro-Polarimetric High-contrast Exoplanet REsearch instrument (SPHERE) on the ESO's Very Large Telescope (VLT).

為了他們的研究,Vernazza和他的團隊獲得了11張帕拉斯的圖像,這些圖像是由ESO的“甚大望遠鏡”(VLT)上的“光譜-極化高對比度系外行星研究儀器”(球體)獲得的。


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