{"id":13166,"date":"2022-02-11T08:59:43","date_gmt":"2022-02-11T13:59:43","guid":{"rendered":"https:\/\/www.yorku.ca\/science\/?p=13166"},"modified":"2022-05-19T08:59:51","modified_gmt":"2022-05-19T12:59:51","slug":"mysterious-dead-cluster-galaxy-found-in-thriving-ancient-galaxy-city","status":"publish","type":"post","link":"https:\/\/www.yorku.ca\/science\/2022\/02\/11\/mysterious-dead-cluster-galaxy-found-in-thriving-ancient-galaxy-city\/","title":{"rendered":"Mysterious dead cluster galaxy found in thriving ancient galaxy city"},"content":{"rendered":"\n

Media release from February 10, 2022<\/a><\/p>\n\n\n\n

The discovery of a massive dead cluster of galaxies in a young universe full of star producing galaxies, close to 12 billion light-years away from Earth, has surprised an international team, including researchers from 快播视频.<\/p>\n\n\n\n

\"Adam
Adam Muzzin<\/em><\/figcaption><\/figure><\/div>\n\n\n\n

York researchers discovered a large galaxy structure, also known as a protocluster, and partnered with international collaborators and researchers at the University of California, Riverside, who led the effort to explore it in further detail using the largest telescope in the world at the W. M. Keck Observatory in Hawaii.<\/p>\n\n\n\n

\u201cThe Universe is filled with these clusters of galaxies. They\u2019re everywhere,\u201d says Professor Adam Muzzin<\/a> of the Faculty of Science, 快播视频. \u201cOne of things we were looking at was these galaxies very far in the past and when you look at them in the past, they are all still forming stars, but this one is really different. It was no longer forming stars, while all its neighbours were.\u201d<\/p>\n\n\n\n

The newly discovered growing galactic metropolis, named MAGAZ3NE J095924+022537, is a massive newborn galaxy cluster consisting of at least 38 member galaxies. When viewing the galaxy, scientists are looking back in time to when this universe was less than two billion years old.<\/p>\n\n\n\n

\"\"
Image caption: In the early Universe, all previously discovered distant protoclusters like, for example, \u201cThe Spiderweb\u201d (left: artist\u2019s impression) are full of vigorously star-forming galaxies. In contrast, the newly-discovered protocluster \u201cMAGAZ3NE J095924+022537\u201d contains a high fraction of red and dead galaxies like the nearby \u201cComa\u201d cluster (right). The discovery of an ancient cluster containing galaxies which resemble those found in modern clusters was a huge surprise. Image credits: Spiderweb: M. Kornmesser\/ESO; Coma: Russ Carroll, Robert Gendler, & Bob Franke\/Dan Zowada Memorial Observatory.<\/em><\/figcaption><\/figure><\/div>\n\n\n\n

\u201cWhat we were trying to do initially is see how far in the past can we see these massive galaxies and whether or not they have started forming or accumulating this cluster like structure,\u201d says York Visiting Professor Cemile Marsan. \u201cWhat we found is surprising. Not only do we see an over density of galaxies around this one massive galaxy, we also found that they have already advanced quite a bit in their evolution.\u201d<\/p>\n\n\n\n

\"headshot
Cemile Marsan <\/em><\/figcaption><\/figure><\/div>\n\n\n\n

Researchers weren\u2019t expecting to see this dying out of galaxies at this epoch in time. Galaxy clusters grow over time under gravity and, in the present-day universe, can contain hundreds or even thousands of galaxies, as well as hot gas and dark matter. As time goes by, their galaxies burn through the fuel available and evolve from vigorously star-forming galaxies into red and dead galaxies.<\/p>\n\n\n\n

\u201cIn the early universe, all protoclusters discovered until now are full of vigorously star-forming galaxies,\u201d said Ian McConachie, a graduate student at the University of California, Riverside, and the lead author of the research paper. \u201cBut incredibly, unlike all of the other protoclusters which have been found at this epoch, many galaxies in MAGAZ3NE J0959 appear to have already stopped forming stars.\u201d<\/p>\n\n\n\n

The finding raises many questions and could test the current paradigm of how protoclusters are formed, especially if more dead cluster galaxies are found. In the future, Muzzin and Marsan hope to be able to explore further using the new James Webb Space Telescope<\/a> as there could be others like it out there that have yet to be found.<\/p>\n\n\n\n

How do you find something like this?<\/strong><\/p>\n\n\n\n

The team used spectroscopic observations from the W. M. Keck Observatory\u2019s Multi-Object Spectrograph for Infrared Exploration, or MOSFIRE, to make detailed measurements of MAGAZ3NE J0959 and precisely quantify its distances.<\/p>\n\n\n\n

\u201cThere is a degree of serendipity about it. It\u2019s like with archeologists \u2013 you see a building sticking out and you start digging, and sometimes it\u2019s just a wall and sometimes it\u2019s an entire city with pots and pans,\u201d says Muzzin. \u201cYou don\u2019t know until you actually start digging and that\u2019s the same with astronomy. Sometimes you look and there isn\u2019t much there, and then other times you find something surprising and different.\u201d<\/p>\n\n\n\n

Closely associated to the question of how ultramassive galaxies (UMGs) form, is the question of the environment in which they form. Are they always found in over dense environments like protoclusters or can they also form in isolation? Next, the team plans to study the neighbourhood of all of the other UMGs in the MAGAZ3NE (Massive Ancient Galaxies At z>3 NEar-infrared) survey to answer this question.<\/p>\n\n\n\n

\u201cWe don\u2019t think we\u2019ve mapped out the whole structure. We\u2019ve kind of looked at one corner of it and saw an over density of galaxies, but there are the other sides of it we haven\u2019t looked at,\u201d says Marsan, adding, \u201cIt\u2019s one of the most distant structures discovered \u2013 and the oldest in such a young universe by far \u2013 so that\u2019s what sets it apart.\u201d<\/p>\n\n\n\n

The paper, \u201cSpectroscopic Confirmation of a Protocluster at z = 3.37 with a High Fraction of Quiescent Galaxies<\/a>,\u201d is published in the Astrophysical Journal<\/em>.<\/p>\n\n\n\n

Other researchers involved in the study are Gillian Wilson of University of California, Riverside; Benjamin Forrest of University of California, Davis; Michael Cooper of UC Irvine; Marianna Annunziatella and Danilo Marchesini of Tufts University; Jeffrey Chan and Mohamed Abdullah of UCR; Percy Gomez of Keck Observatory; Paolo Saracco of the Astronomical Observatory of Brera, Italy; Julie Nantais of Andr\u00e9s Bello National University, Santiago, Chile.<\/p>\n\n\n\n

The study was supported by grants from the National Science Foundation and NASA.<\/p>\n","protected":false},"excerpt":{"rendered":"

Media release from February 10, 2022 The discovery of a massive dead cluster of galaxies in a young universe full of star producing galaxies, close to 12 billion light-years away from Earth, has surprised an international team, including researchers from 快播视频. York researchers discovered a large galaxy structure, also known as a protocluster, and […]<\/p>\n","protected":false},"author":1202,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","ngg_post_thumbnail":0,"footnotes":""},"categories":[6,22],"tags":[251,37,25,26,143,137,139,250,38,87],"class_list":["post-13166","post","type-post","status-publish","format-standard","hentry","category-physics-astronomy","category-research","tag-astronomy","tag-everyone","tag-faculty-of-science","tag-keele-campus","tag-learn-more","tag-news","tag-observatory","tag-physics-astronomy","tag-research","tag-stay-informed"],"yoast_head":"\nMysterious dead cluster galaxy found in thriving ancient galaxy city - Faculty of Science<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.yorku.ca\/science\/2022\/02\/11\/mysterious-dead-cluster-galaxy-found-in-thriving-ancient-galaxy-city\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mysterious dead cluster galaxy found in thriving ancient galaxy city - Faculty of Science\" \/>\n<meta property=\"og:description\" content=\"Media release from February 10, 2022 The discovery of a massive dead cluster of galaxies in a young universe full of star producing galaxies, close to 12 billion light-years away from Earth, has surprised an international team, including researchers from 快播视频. 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