Indian scientists discover planet 600 light years away

印度科学家在距地球600光年的地方发现行星

HIGHLIGHTS亮点

The discovery was made by measuring the mass of the planet using the PARAS spectrograph integrated with 1.2m telescope in Mount Abu.

这一发现是通过阿布山1.2m带PARAS光谱仪测量的望远镜测量行星质量发现的。

With this discovery, India has joined a select league of countries which has discovered planets around stars.

由于这个发现，印度加入了一个联盟，这个联盟的成员是一些在恒星周围发现行星的国家。

CHENNAI: A team of scientists from the Physical Research Laboratory (PRL), Ahmedabad, discovered a sub-Saturn or super-Neptune size exoplanet, which is about 27 times the mass of Earth and six times the radius of Earth. The planet revolves around a Sun-like star, some 600 light years away from Earth.

金奈：位于艾哈迈达巴德的物理研究实验室的科学家团队发现了一个亚土星或超级海王星大小的外行星, 它的质量约是地球的27倍，半径是地球半径的六倍。这颗行星围绕着一颗太阳般的恒星, 距离地球大约600光年。

The discovery was made by measuring the mass of the planet using the indigenously designed ‘PRL Advance Radial-velocity Abu-Sky Search’ (PARAS) spectrograph integrated with 1.2m telescope at PRL’s Gurushikar Observatory in Mount Abu. With this discovery, India has joined a select league of countries which has discovered planets around stars.

该行星是通过测量地球的质量发现的，使用了印度物理研究实验室在阿布山古鲁希卡的天文台1.2m带PARAS（印度物理研究实验室先进的径向光谱仪）。由于这个发现，印度加入了一个联盟，这个联盟的成员是一些在恒星周围发现行星的国家。

In a post on the website of the Indian Space Research Organisation, scientists said the name of the host star is EPIC 211945201 or K2-236 and the planet will be known as EPIC 211945201b or K2-236b. The planet was found to go around the star in about 19.5 days.

在印度空间研究组织网站上的一篇文章中，科学家们说，宿主恒星的名字是211945201或K2-23，因此这颗行星将被称为史诗211945201B或K2-36B。该行星绕宿主恒星的周期为19.5天。

The surface temperature of the planet was found to be around 600 degrees Celsius, as it is very close to the host star. It is seven times nearer to its star, in comparison with Earth-Sun distance. This might make it uninhabitable.

该行星表面温度约为600摄氏度，因为它离宿主恒星非常近。与地球太阳之间的距离相比，它与恒星的距离是地日距离的七分之一，这可能造成它不太适合居住。

The discovery is of importance for understanding the formation mechanism of such super-Neptune or sub-Saturn kind of planets, that are too close to the host star, according to scientists.

科学家们说, 这一发现对于了解超级海王星或亚土星类行星的形成机制是非常重要的, 因为它们都离宿主恒星太近了。

Paras spectrograph made an independent measurement of the mass of the planet body, as it was necessary for discovery after data from Nasa’s K2 (Kepler2) photometry could not confirm the planetary nature of the system.

PARA光谱仪对行星体的质量进行了独立的测量, 这对此发现十分必要，因为在 Nasa 的 K2 (Kepler2) 光度计的数据无法证实该星系的行星性质。

Initially, it was Nasa’s K2 (Kepler2) photometry that found that the source was a planetary candidate as it was transiting, where the planet body comes between the star and the observer on Earth.

最初，当行星在恒星与地球间活动时，NASA的K2（KePLE2）测光法发现这可能是个行星。

It goes around the star and therefore blocks a tiny amount of star-light. By measuring the amount of light blocked by the planet body, the diameter or size of the planet can be measured. It was found to be 6 Earth radii. However, that data was not sufficient to confirm the planetary nature of the system.

它绕着恒星，因此阻挡了少量恒星的光芒。通过测算被行星阻挡的光的多少，行星的半径或它的大小能够计算出来。由此发现它的半径是地球的六倍。但是这不足以确定系统的行星性质。

PRL scientists, who observed the target for about 1.5 years with the spectrograph to probe the nature of the system, made calculations that suggested that the heavy elements like ice, silicates and iron content make 60%-70% of the total mass.

印度物理研究实验室的科学家们用光谱仪对目标进行了一年半的观测，来探测该系统的性质，计算结果表明重元素如冰、硅酸盐和铁含量占其总质量的60%～70。

This detection was important as it adds to a sparse catalogue of confirmed exoplanets with masses between 10 and 70 MEarth and radii between 4 and 8 REarth, whose masses and radii are measured to a precision of 50% or better.

这个发现十分重要，因为在地球质量10到70倍间以及地球半径4到8倍的太阳系外行星这个稀有的系列里又增加了一个。它们的测量精准达到50%甚至更高。

Only 23 such systems (including the present) are known to this date with such precise measurement of mass and radii.

目前有重量和半径精确测量结果的星系（包含这个）只有23个。

印度时报读者的评论：

来源：http://www.santaihu.com/45219.html

外文：https://timesofindia.indiatimes.com/home/science/indian-scientists-discover-planet/articleshow/64503209.cms

Dean - traveller - 20 hours ago20小时前

have you heard about Arab scientist Mohammed? he was the person who discovered Allah through Gabriel telescopic eyes!! and after discovering he went flying to moon with a winged donkey and sleeved the moon into half!!

the followers say even NASA endorses the scientific claims made in Koran 1400 years back.

你听说过阿拉伯科学家穆罕默德吗？他是通过加布里埃尔望远镜发现真主的人!!之后他骑着飞驴飞往月球，把月亮套成了一半！！

他的追随者说, 甚至 NASA 也赞同1400年前的《古兰经》中提出的科学主张。

Veer Rao - 21 hours ago21小时前

Cool. Good News. Little steps of progress and change in India.

不错，是个好消息。印度有些新的进步和变化。

Ajay - 20 hours ago20小时前

PAPPU WILL NOW DEMAND THAT THIS PLANET SHOULD BE NAMED AFTER HIM AS HE IS ONE AND ONLY ONE PAPPU IN THE ENTIRE UNIVERSES

现在，帕普将要求这个星球应该以他的名字命名，因为他是整个宇宙中唯一的一个帕普。

Godfrey Barboza - 20 hours ago20小时前

Has any one found the missing malaysian flight 370 from our own planet ?

我们这个星球上有人找到之前失踪的马航370吗？

Om Namah Shivayah - 20 hours ago20小时前

This all discovery is happening due to Modi.. There is no science, and if the scientist is able to achieve anything it only due to blessings of Baba Modi. Hence it should be named as Plant M! Modi Modi Modi Modi!!!

一切的发现都归功于莫迪。没有科学存在，如果科学家能够取得些成果，那只因为受到巴巴莫迪的保佑。所以，这颗行星应该命名为莫迪！莫迪！莫迪！！！！！

Nation First Religion - SAVE WATER SAVE NATION - 20 hours ago20小时前

Hopefully we can send Pappu and team to this planet for election campaign.....

希望可以送拉胡尔和他的团队到这个行星上去竞选……

Sukumar Kamath - Cloud 9 - 20 hours ago20小时前

Send all those Scamsters of Maha Ghatbandhan political parties there and save earth....

把所有那些 Scamsters Ghatbandhan 的政党都送到那里, 拯救地球......。

propconsblr - BLR - 19 hours ago19小时前

Congratulations to Indian scientists .....Gr8 Discovery .....!!

祝贺印度科学家……很棒的发现…！！

Tanmay Chakrabarti - 18 hours ago18小时前

Brilliant achievement by them!

他们取得的辉煌的成就！

Sk - 18 hours ago 18小时前

Great achievement. My salute and Congratulations to the team.

很棒的成就。向团队表示我的敬意和祝贺。