Arp 220 is the closest ultraluminous infrared galaxy (ULIRG) to Earth, at 250 million light years away. Its energy output was discovered by IRAS to be dominated by the far-infrared part of the spectrum. [3]

2023年4月17日 · A stunning smash-up of two spiral galaxies shines in infrared with the light of more than a trillion suns. Collectively called Arp 220, the colliding galaxies ignited a tremendous burst of star birth. Each of the combining galactic cores is encircled by a rotating, star-forming ring blasting out the glaring light that Webb captured in infrared.

阿尔普220 （Arp 220）是两个星系相互碰撞后合并中的天体，距离地球约2.5亿光年，位于巨蛇座。 名称来自它是霍尔顿·阿尔普编的《特殊星系图集》中的第220个天体。

2023年4月17日 · Shining like a brilliant beacon amidst a sea of galaxies, Arp 220 lights up the night sky in this view from NASA’s James Webb Space Telescope. Actually two spiral galaxies in the process of merging, Arp 220 glows brightest in infrared light, making it …

1997年6月9日 · Arp 220, located 250 million light-years away in the constellation Serpens, is the 220th object in Halton Arp's Atlas of Peculiar Galaxies. The image was taken with three filters.

2023年4月18日 · Arp 220位于巨蛇座，距离我们2.5亿光年，是赫顿·阿普特殊星系图集中的第220个天体。 它是离地球最近的ULIRG，也是离地球最近的三个星系合并中最亮的一个。

2008年4月24日 · Arp 220 glows brightest in infrared light and is an ultra-luminous infrared galaxy. Previous Hubble observations, taken in the infrared at a wavelength that looks through the dust, have uncovered the cores of the parent galaxies 1,200 light-years apart.

2023年1月17日 · New and archival high-resolution images taken by the Hubble Space Telescope provide a state-of-the-art view of the structures, dust, and stellar clusters in Arp 220. We find that ~90% of the Halpha emission arises from a shock-ionized bubble emanating from the AGN in the western nucleus, while the nuclear disks dominate the Pbeta emission.

2025年1月30日 · This image of Arp 220 was taken by NASA’s Hubble Space Telescope. Arp 220 is the aftermath of a collision between two spiral galaxies. It is the brightest of the three galactic mergers closest to Earth, about 250 million light-years away. Astronomers studied Arp 220 with the Submillimeter Array (SMA) to determine the role magnetic fields play in the formation of stars. Credit: NASA/ESA/STScI/HST

2008年4月24日 · Arp 220 appears to be a single, odd-looking galaxy, but is in fact a nearby example of the aftermath of a collision between two spiral galaxies. It is the brightest of the three galactic mergers closest to Earth, about 250 million light-years away in the constellation of Serpens, the Serpent.