What is Stellar association?
[[File:Sco-CenMap.png|thumb|250px|Map of the area with the Scorpius–Centaurus Association.<ref>{{cite journal|title=A Hipparcos Census of Nearby OB Associations|url=https://archive.org/details/sim_astronomical-journal_1999-01_117_1/page/354|display-authors=4|author=de Zeeuw, P.T.|author2=Hoogerwerf, R.|author3=de Bruijne, J.H.J.|author4=Brown, A.G.A.|author5=Blaauw, A.|name-list-style=amp|date=1999|journal=Astronomical Journal|volume=117|issue=1|pages=354–399|bibcode=1999AJ....117..354D|doi=10.1086/300682|arxiv = astro-ph/9809227 |s2cid=16098861}}</ref>]] A '''stellar association''' is a loose [[star cluster]], looser than both [[open cluster]]s and [[globular cluster]]s. Stellar associations usually have from 10 to 100 or more stars. The stars have a common origin. They are moving together through space. Stellar associations were first discovered by the Soviet [[Armenia]]n astronomer [[Victor Ambartsumian]] in 1947.<ref>{{cite book |editor1-last=Lankford |editor1-first=John |title=History of Astronomy: An Encyclopedia |date=2011|orig-year=1997 |publisher=[[Routledge]] |isbn=9781136508349 |page=[https://books.google.com/books?id=9jyExgmZxBoC&dq=ambartsumian&pg=PA10 10] |chapter=Ambartsumian, Viktor Amazaspovich (b. 1908)}}</ref><ref>{{cite news |last1=Saxon |first1=Wolfgang |title=Viktor A. Ambartsumyan, 87, Expert on Formation of Stars |url=https://www.nytimes.com/1996/08/15/world/viktor-a-ambartsumyan-87-expert-on-formation-of-stars.html |work=[[The New York Times]] |date=15 August 1996 |page=22}}</ref> == References == {{reflist}} [[Category:Star clusters]] {{sci-stub}}