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奇怪的化学成分让我们洞察了星际彗星鲍里索夫的起源

  2I/Borisov was discovered in August 2019 through the use of a large telescope in Chile's Atacama Desert by an astronomer of the same name.The unique chemical makeup of the comet suggests that it may have originated from an ultra-cold interstellar environment with high levels of carbon.

  2I/鲍里索夫是2019年8月由一位同名天文学家在智利阿塔卡玛沙漠使用大型望远镜发现的。彗星独特的化学成分表明,它可能起源于一个含碳量高的超冷星际环境。

  NASA has identified the strange chemical composition inside 2I/Borisov,an interstellar comet that traveled through our solar system in 2019,providing insight into the origins of the space rock

  美国国家航天局已经确认了2I/Borisov(一颗星际彗星)内部的奇怪化学成分,该彗星在2019年穿越了我们的太阳系,提供了对太阳岩石起源的洞察

  美国宇航局戈达德太空飞行中心的行星科学家

  An international team led by planetary scientists Martin Cordiner and Stefanie Milam of NASA's Goddard Space Flight Center released research on Monday that contained an analysis of the chemical makeu of 2I/Borisov.

  由美国宇航局戈达德太空飞行中心的行星科学家Martin Cordiner和Stefanie Milam的一个国际小组周一公布了一项研究,其中包括包含了对2I/Borisov的化学组成分的分析。

  ​According to the study,researchers working at the international astronomy facility used the Atacama Large Millimeter/submillimeter Array(ALMA)to identify that gas emerging from the comet contained more carbon monoxide(CO)than has been discovered in any other comet at this proximity to the sun,just under 186 million miles(300 million kilometers).
纽约时报中英文网 www.qqenglish.com


  根据这项研究,在国际天文学设施工作人员利用阿塔卡马大型毫米/亚毫米阵列(ALMA)确定,彗星喷出的气体中所含一氧化碳(CO)比在太阳附近的任何其他彗星中所发现的都多,不到1.86英里(3亿公里)。

  国家射电天文观测站的数据

  Specifically,the concentration of CO was between nine and 26 times above average for comets that traverse the solar system,according to National Radio Astronomy Observatory(NRAO).

  具体来说,根据国家射电天文观测站的数据,横穿太阳系的彗星的CO浓度比平均值高出9到26倍。

  "The comet must have formed from material very rich in CO ice,which is only present at the lowest temperatures found in space,below minus 420 degrees Fahrenheit(minus 250 degrees Celsius),"Milam said in the NASA release.

  米拉姆在美国航天局的报高中会说:“这颗彗星一定是由富含钴冰的物质形成的,只有在零下420华氏度(零下250摄氏度)的太空最低温度下才存在。”

  "If the gases we observed reflect the composition of 2I/Borisov's birthplace,then it shows that it may have formed in a different way than our own solar system comets,in an extremely cold,outer region of a distant planetary system,"Cordiner said.

  科迪纳说:“如果我们观测到的气体反应了2I/鲍里索夫出生地的成分,那么它表明它可能是以不同于我们太阳系彗星的方式形成的,形成于一个遥远行星系的极冷外部区域。”

  Astronomers have not yet identified what kind of star the comet originally formed around,but it is suspected to have come from a cold region in a larger protoplanetary disk,or a rotating disk of planet-formed dust and gas traveling around a newly-formed star.

  天文学家还没有确定彗星最初是围绕那种恒星形成的,但人们怀疑它来自一个更大的原行星盘中的寒冷区域,或者使由行星形成的尘埃和气体围绕一个新形成的恒星旋转的原盘。

  2I/Borisov was first discovered by astronomer Gennady Borisov on 30 August 2019,becoming the second extrasolar object ever discovered within our planetary system after the finding of interstellar object'Oumuamua'in 2017.

  2I/Borisov于2019年8月30日首次被天文学家Gennady Borisov发现,成为继2017年发现星际天体“Oumuamua”之后,我们在行星系统内发现的第二个太阳系外天体。

  Astronomers took a closer look at the comet in December 2019,using ALMA,and discovered that 2I/Borisov was traveling at some 21 miles per second as it sped through the solar system.

  2019年12月,天文学家使用ALMA对这颗彗星进行了仔细观察,发现2I/Borisov在穿越太阳系时以每秒21英里的速度运行。

  Researchers will now compare the comet's chemical makeup with other interstellar objects to find out if its unusually high levels of CO are unusual.

  研究人员现在将把这颗彗星的化学成分与其他星际物体进行比较,以确定其一场高的一氧化碳含量是否异常。
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