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2022-03-31
2022年03月31日:探索触鬚星系-(Exploring the Antennae)
2022年03月31日:探索触鬚星系-(Exploring the Antennae)--原图下载{mtitle title="探索触鬚星系"/}Image Credit &Copyright: Dietmar Hager,Eric Benson说明: 在南天的乌鸦座之内,离我们大约6千万光年远的2个大星系正在互撞。在这种历时数十亿年的大剧变事件中,这2个编录号为NGC 4038和NGC 4039的星系内之恒星,却极少发生碰撞,只有它们庞大的分子气体和尘埃云会受到影响,因而在孑遗的宇宙残骸之中心附近,触发了一波波猛烈的恒星形成活动。这幅涵盖大约50万光年区域的精采影像,呈现了新诞生的星团以及被重力潮汐力远远抛出的物质。这幅摄于2012-2021年期间、总曝光时间长达88小时的精采清晰地面望远镜影像,清楚呈现它们的潮汐尾,以及视野里的遥远背景星系。这个亦名为Arp 244的星系对之弯曲长条结构及整体外观,为它博得触鬍星系的暱称。{lamp/}原文:{mtitle title="Exploring the Antennae"/}Image Credit &Copyright: Dietmar Hager,Eric BensonExplanation: Some 60 million light-years away in the southerlyconstellationCorvus, two large galaxies are colliding.Stars in the two galaxies, cataloged asNGC 4038 and NGC 4039,very rarely collide in the course of theponderous cataclysm that lasts for hundreds of millions of years.But the galaxies' largeclouds of molecular gas and dustoften do, triggeringfurious episodes of star formationnear the center of thecosmic wreckage.Spanning over 500 thousand light-years, thisstunning view also reveals new star clusters andmatter flung far from the scene of the accident bygravitational tidalforces.Theremarkably sharp ground-based image,an accumulation of 88 hours of exposure captured during 2012-2021,follows the faint tidal tails and distant background galaxies in thefield of view.The suggestive overall visual appearance of the extended arcingstructures gives the galaxy pair, also known as Arp 244,its popular name - The Antennae.
2022年03月31日
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2021-03-27
2021年03月27日:探索触鬚星系-(Exploring the Antennae)
2021年03月27日:探索触鬚星系-(Exploring the Antennae)--原图下载{mtitle title="探索触鬚星系"/}Image Credit &Copyright:Bernard Miller说明: 在南天的乌鸦座内,二个离我们大约6千万光年远的大星系发生了碰撞。在这种历时数十亿年的大型剧变事件中,这二个编号为NGC 4038和NGC 4039的星系内之恒星,却鲜少发生碰撞,只有它们巨大的分子云和尘埃云会受到影响,因而在遗留的宇宙残骸之中心附近,触发了一波波猛烈的恒星形成活动。这幅涵盖大约50万光年天区的精采影像,也呈现了新诞生的星团以及被重力引潮力远远抛出的长条状物质。这幅精采的清晰地面望远镜影像,融合了窄波段数据,以突显恒星形成区的原子氢气发出的泛红特徵幅射。此例星系碰撞所造成的弯曲长条构造,让这对星系博得触鬍星系的暱称。{lamp/}原文:{mtitle title="Exploring the Antennae"/}Image Credit &Copyright:Bernard MillerExplanation: Some 60 million light-years away in the southerlyconstellationCorvus, two large galaxies are colliding.Stars in the two galaxies, cataloged asNGC 4038 and NGC 4039,very rarely collide in the course of theponderous cataclysm that lasts for hundreds of millions of years.But the galaxies' largeclouds of molecular gas and dustoften do, triggeringfurious episodes of star formationinear the center of thecosmic wreckage.Spanning over 500 thousand light-years, thisstunning view also reveals new star clusters andmatter flung far from the scene of the accident bygravitational tidalforces.Theremarkably sharp ground-based imageincludes narrowbanddata that highlights the characteristic red glow of atomic hydrogengas in star-forming regions.The suggestive overall visual appearance of theextended arcingstructures gives the galaxy pair its popular name - The Antennae.
2021年03月27日
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2017-04-28
2017年04月28日:探索触鬚星系-(Exploring the Antennae)
2017年04月28日:探索触鬚星系-(Exploring the Antennae)--原图下载{mtitle title="探索触鬚星系"/}Image Credit &Copyright:Data;Subaru, NAOJ,NASA/ESA/Hubble -Assembly and Processing;Roberto Colombari说明: 在南天的乌鸦座之内,离我们大约6千万光年远的二个大型星系发生了碰撞。在这种历时数十亿年的大型剧变事件中,这二个编号为NGC 4038和NGC 4039的星系内之恒星,却极少发生碰撞,只有它们巨大的分子气体和尘埃云会受到影响,因而在遗留的宇宙残骸之中心附近,触发了一波波猛烈的恒星形成活动。这幅涵盖大约50万光年天区的精采影像,呈现了新诞生的星团以及被重力引潮力远远抛出的长条状物质。这幅精采的马赛克影像,因为融合了地面昴宿望远镜和哈伯太空望远镜的数据,因此得以同时呈现庞大黯淡的潮汐流,以及无比清晰的明亮星系核之结构。此一星系碰撞所造成的弯曲长条构造,让这对星系博得触鬍星系的暱称。{lamp/}原文:{mtitle title="Exploring the Antennae"/}Image Credit &Copyright:Data;Subaru, NAOJ,NASA/ESA/Hubble -Assembly and Processing;Roberto ColombariExplanation: Some 60 million light-years away in the southerlyconstellationCorvus, two large galaxies arecolliding.Stars in the two galaxies, cataloged asNGC 4038and NGC 4039, very rarely collide in the course of theponderous cataclysm thatlasts for hundreds of millions of years.But the galaxies' large clouds ofmoleculargas and dust often do, triggeringfuriousepisodes of star formation near the center of thecosmic wreckage.Spanning over 500 thousand light-years, thisstunning view also reveals new star clusters andmatter flung far from the scene of the accident bygravitationaltidal forces.The remarkable mosaicked image was constructedusing data from the ground-based Subaru telescopeto bring out large-scale and faint tidal streams, andHubble Space Telescope data of extreme detail in thebright cores.The suggestive visual appearance of theextended arcingstructures gives the galaxy pair its popular name - The Antennae.
2017年04月28日
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2015-02-12
2015年02月12日:探索触鬚星系-(Exploring the Antennae)
2015年02月12日:探索触鬚星系-(Exploring the Antennae)--原图下载{mtitle title="探索触鬚星系"/}Image Data:Subaru, NAOJ,NASA/ESA/Hubble,R.W. Olsen -Processing:Federico PellicciaandRolf Wahl Olsen说明: 在南天的乌鸦座内,离我们大约6千万光年远的二个大型星系发生了碰撞。在这种历时数十亿年的大型剧变事件中,这二个编号为NGC 4038和NGC 4039的星系内之恒星,却极少发生互撞,只有它们巨大的分子气体和尘埃云会受到影响,因而在所造成的宇宙残骸之中心附近,触发一了波波猛爆的恒星形成活动。这幅涵盖大约50万光年天区的壮丽组合影像,呈现了新诞生的星团以及被重力潮汐力远远抛出的长条状物质。这幅精采协同影像,因为组合了小型和大型地面望远镜数据,因此得以呈现大型、黯淡的潮汐流,此外,更纳入能够呈现极清晰明亮核心结构的哈伯望远镜数据。此星系碰撞所造成的弯曲长条构造,让这对星系博得触鬍星系 (the Antennae)的暱称。{lamp/}原文:{mtitle title="Exploring the Antennae"/}Image Data:Subaru, NAOJ,NASA/ESA/Hubble,R.W. Olsen -Processing:Federico PellicciaandRolf Wahl OlsenExplanation: Some 60 million light-years away in the southerlyconstellationCorvus, two large galaxies arecolliding.The stars in the two galaxies, cataloged asNGC 4038and NGC 4039, very rarely collide in the course of theponderous cataclysm,lasting hundreds of millions of years.But their large clouds ofmoleculargas and dust often do, triggering furiousepisodes of star formation near the center of thecosmic wreckage.Spanning about 500 thousand light-years, thisstunning composited view also reveals new star clusters andmatter flung far from the sceneof the accident bygravitationaltidal forces.The remarkable collaborative image is a mosaic constructedusing data fromsmall and large ground-based telescopes to bring out large-scaleand faint tidal streams, composited with thebright coresimaged in extreme detail by the Hubble Space Telescope.Of course,the suggestive visual appearance of the extended arcing structuresgives the galaxy pair its popular name - The Antennae.
2015年02月12日
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2014-04-23
2014年04月23日:Arp 81-碰撞一亿年后的模样-(Arp 81: 100 Million Years Later)
2014年04月23日:Arp 81-碰撞一亿年后的模样-(Arp 81: 100 Million Years Later)--原图下载{mtitle title="Arp 81-碰撞一亿年后的模样"/}Image Credit: Hubble Legacy Archive,ESA, NASA;Processing -Martin Pugh说明: 我们在地球所见的这个高度扭曲、编录号为Arp81的星系对,是它们在近距离接近一亿年之后的状态。这幅彩色组合影像,呈现了它们接近后受到重力互扰而严重变形的景象,其中包括扭曲的带状气体和尘埃,混乱而激烈的恒星形成活动,以及落在宇宙级碰撞残骸后方、长达20万光年长的潮汐尾。这对大小相当的星系又称为NGC 6622(左)与NGC 6621;命运注定经历重複的近距离接近之后,在遥远的未来它们将聚合成单一的庞大星系。这对星系位在天龙座之内,离我们2亿8千万光年远。在这幅来自哈伯资料库的清晰再处理影像里,还可见到一些更遥远的背景星系。{lamp/}原文:{mtitle title="Arp 81: 100 Million Years Later"/}Image Credit: Hubble Legacy Archive,ESA, NASA;Processing -Martin PughExplanation: Fromplanet Earth, we see this strongly distortedpair ofgalaxies, cataloged asArp81, as they were only about 100 millionyears after their close encounter.The havoc wreakedby their mutual gravitational interaction during the encounter isdetailed in this color compositeshowing twisted streams of gas and dust, a chaos of massivestar formation,and a tidal tailstretching for 200 thousand light-years or so as itsweeps behind the cosmic wreckage.Also known as NGC 6622 (left) and NGC 6621, the galaxies areroughly equal in size but aredestined to mergeinto one large galaxy in thedistant future, making repeated approaches until they finallycoalesce.Located in the constellationDraco,the galaxies are 280 millionlight-years away.Even more distant background galaxies can be spotted inthe sharp, reprocessed, image from Hubble Legacy Archive data.
2014年04月23日
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2011-04-29
2011年04月29日:触鬚星系-(The Antennae)
2011年04月29日:触鬚星系-(The Antennae)--原图下载{mtitle title="触鬚星系"/}Image Credit & Copyright: Acquisition and data reduction -Andrey Oreshko (Elena Remote Observatory),Processing - Dietmar Hager(stargazer-observatory)说明: 在南天的乌鸦座(Corvus)内,离我们大约六千万光年远的二个大型星系发生了碰撞。在这种耗时数亿年的冗长事件中,这二个星系(NGC 4038和NGC 4039)内的恒星却不会发生互撞,只有它们巨大的分子云气和尘埃云会受到影响,因而在中心附近的宇宙残骸中,触发一系列猛爆的恒星形成活动。这幅涵盖大约五十万光年天区的壮丽影像,呈现了新诞生的星团以及被重力潮汐力所抛出的长条状物质。所造成的弯曲长条构造,让这对星系获得触鬍星系(the Antennae)的暱称。{lamp/}原文:{mtitle title="The Antennae"/}Image Credit & Copyright: Acquisition and data reduction -Andrey Oreshko (Elena Remote Observatory),Processing - Dietmar Hager(stargazer-observatory)Explanation: Some 60 million light-years away in the southerlyconstellationCorvus, two large galaxiescollided.But the stars in the two galaxies, cataloged asNGC 4038and NGC 4039, don't collide in the course of theponderous event,lasting hundreds of millions of years.Instead, their large clouds ofmoleculargas and dust do, triggering furiousepisodes of star formation near the center of thecosmic wreckage.Spanning about 500 thousand light-years,thisstunning view also reveals new star clusters andmatter flung far from the sceneof the accident bygravitationaltidal forces.Of course,the suggestive visual appearance of the extended arcing structuresgives the galaxy pair its popular name - The Antennae.
2011年04月29日
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