Star formation histories of nearby galaxies

附近星系的恒星形成历史

• 批准号: 342635-2008
• 负责人: Barmby, Pauline
• 金额: $ 1.86万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=482505
• 关键词: Star; formation; histories; nearby; galaxies

Galaxies are the largest luminous objects in the universe, and understanding how galaxies (including our own) came to be the way they are is a major focus of modern astronomy. Questions we want to answer include the following: how did galaxies assemble their stars and gas? How did they assume their present shapes? What controls the rate at which they form new stars? The lifetime of a galaxy is very long compared to a human lifetime, so astronomers need to reconstruct the past from observations of the present, somewhat like archaeologists.

星系是宇宙中最大的发光物体，了解星系（包括我们自己的星系）是如何形成的是现代天文学的一个主要焦点。我们想回答的问题包括：星系是如何聚集恒星和气体的？它们是如何形成现在的形状的？是什么控制着它们形成新恒星的速度？与人类的一生相比，星系的寿命非常长，因此天文学家需要从现在的观察中重建过去，有点像考古学家。