Arp 220
IC 4553,[1] UGC 9913,[1] PGC 55497[1] |
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Arp 220 is the result of a collision between two galaxies which are now in the process of merging. It is the 220th object in Halton Arp's Atlas of Peculiar Galaxies.
Features
Arp 220 is the closest
Luminous far-infrared objects like Arp 220 have been found in surprisingly large numbers by sky surveys of submillimetre wavelengths using instruments such as the Submillimetre Common-User Bolometer Array (SCUBA) at the James Clerk Maxwell Telescope (JCMT). Arp 220 and other relatively local
Astronomers from the Arecibo Observatory have detected organic molecules in the galaxy.[5]
Arp 220 contains at least two bright maser sources, an OH megamaser, and a water maser.[6] In October 2011, astronomers spotted a record-breaking seven supernova all found at the same time in Arp 220.[7][8] The merging of the two galaxies started around 700 million years ago.[9]
Recent observations
References
- ^ a b c d e f g h i j k "NASA/IPAC Extragalactic Database". Results for Arp 220. Retrieved 2006-12-07.
- ^ "First Light for Band 5 at ALMA – New receivers improve ALMA's ability to search for water in the Universe". www.eso.org. Retrieved 22 December 2016.
- ^ IRAS exposes a remarkable infrared galaxy , Physics Today, 37, part no 8, 18–20 (1984)
- ^ "Hubble Eyes Star Birth in the Extreme". Retrieved 2006-10-16.
- ^ "Arecibo telescope finds critical ingredients for the soup of life in a galaxy far, far away". Cornell Chronicle. Cornell University. 2008-01-14. Archived from the original on 12 May 2008. Retrieved 2008-04-01.
- ^ "IC 4553". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2006-12-07.
- ^ "Seven Supernovae Found in Single Galaxy – A First" (Press release). Radio Astronomy and Astrophysics Group, National Geographic Society. October 6, 2011. Archived from the original on October 7, 2011. Retrieved October 10, 2011.
we can confirm seven supernovae [in a single galaxy], thanks to a 17-year monitoring of the radio sources in Arp 220
- Science Daily. Oct 2, 2011. Archived from the originalon 2011-09-30. Retrieved Oct 10, 2011.
With all the data in place, we can now be certain that all seven of these sources are supernovae: stars that exploded in the last 60 years
- ^ United Space in Europe. "Arp 220". www.spacetelescope.org. Retrieved 2017-04-08.
- ^ "James Webb Space Telescope Captures Stunning Image of Arp 220". www.jameswebbdiscovery.com. Retrieved 2024-02-21.
- ^ "Webb captures the spectacular galactic merger Arp 220". October 17, 2023.
External links
- "Hubble Sees Star Birth Gone Wild" (SpaceDaily) Jun 16, 2006
- Arp 220 on