Cosmic Evolution Survey

{{Short description|Hubble Space Telescope Treasury Project}}

{{Infobox company

| members = more than 200 (as of 2019)

| website = http://cosmos.astro.caltech.edu

}}

Image:COSMOS survey.jpgs trigger active galactic nuclei.]]

File:COSMOS 3D dark matter map.png with the Hubble Space Telescope.{{Cite press release |date=7 January 2007 |title=Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D |url=http://hubblesite.org/newscenter/archive/releases/2007/01/image/a/grav |publisher=NASA|url-status=dead | archive-url=https://web.archive.org/web/20130521012704/http://hubblesite.org/newscenter/archive/releases/2007/01/image/a/grav/ | archive-date=May 21, 2013}}]]

The Cosmic Evolution Survey (COSMOS) is a Hubble Space Telescope (HST) Treasury Project to survey a two square degree equatorial field with the Advanced Camera for Surveys (ACS).{{Cite journal | doi = 10.1086/516585| title = The Cosmic Evolution Survey (COSMOS): Overview| journal = The Astrophysical Journal Supplement Series| volume = 172| pages = 1–8| year = 2007| last1 = Scoville | first1 = N.| authorlink1 = Nick Scoville| last2 = Aussel | first2 = H.| last3 = Brusa | first3 = M.| last4 = Capak | first4 = P.| last5 = Carollo | first5 = C. M.| authorlink5 = C. Marcella Carollo| last6 = Elvis | first6 = M.| last7 = Giavalisco | first7 = M.| last8 = Guzzo | first8 = L.| last9 = Hasinger | first9 = G.| last10 = Impey | authorlink10 = Chris Impey| first10 = C.| last11 = Kneib | first11 = J. -P. | last12 = Lefevre | first12 = O.| last13 = Lilly | first13 = S. J.| authorlink13 = Simon Lilly| last14 = Mobasher | first14 = B.| last15 = Renzini | first15 = A.| last16 = Rich | first16 = R. M.| last17 = Sanders | first17 = D. B.| last18 = Schinnerer | first18 = E.| last19 = Schminovich | first19 = D.| last20 = Shopbell | first20 = P.| last21 = Taniguchi | first21 = Y.| last22 = Tyson | first22 = N. D.| issue = 1| authorlink22 = Neil deGrasse Tyson|arxiv = astro-ph/0612305 |bibcode = 2007ApJS..172....1S | s2cid = 34251129}} The largest survey ever undertaken by HST, the project incorporates commitments from observatories around the world, such as the Very Large Array radio observatory, the European Space Agency's XMM-Newton satellite, Japan's eight meter Subaru telescope and James Webb Space Telescope. At the moment, more than 150 astronomers around the world actively contribute to the project.

The project's primary goal is to study the relationship between large scale structure (LSS) in the universe and dark matter, the formation of galaxies, and nuclear activity in galaxies. This includes careful analysis of the dependence of galaxy evolution on environment.{{cite web|title=COSMOS|url=http://cosmos.astro.caltech.edu|work=Cosmic Evolution Survey|accessdate=19 October 2015}}

The survey covers a field, often known as the COSMOS field, of 2 square degrees of sky in the constellation Sextans. The centre of the field in j2000 coordinates is at Right Ascension 10:00:24 Declination 02:10:55

In 2007 they released the first 3D dark matter map.{{Cite web|title=First 3D map of the Universe's dark matter scaffolding|url=https://www.esa.int/Science_Exploration/Space_Science/First_3D_map_of_the_Universe_s_dark_matter_scaffolding|access-date=2021-11-23|website=www.esa.int|language=en}}{{Cite journal|last1=Massey|first1=Richard|last2=Rhodes|first2=Jason|last3=Ellis|first3=Richard|last4=Scoville|first4=Nick|last5=Leauthaud|first5=Alexie|last6=Finoguenov|first6=Alexis|last7=Capak|first7=Peter|last8=Bacon|first8=David|last9=Aussel|first9=Hervé|last10=Kneib|first10=Jean-Paul|last11=Koekemoer|first11=Anton|date=January 2007|title=Dark matter maps reveal cosmic scaffolding|url=https://www.nature.com/articles/nature05497|journal=Nature|language=en|volume=445|issue=7125|pages=286–290|doi=10.1038/nature05497|pmid=17206154|arxiv=astro-ph/0701594|bibcode=2007Natur.445..286M|s2cid=4429955|issn=1476-4687}}

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