The Winds of Wolf-Rayet Stars: Their strength and Structure

沃尔夫拉叶星的风：它们的强度和结构

• 批准号: 227518-2012
• 负责人: StLouis, Nicole
• 金额: $ 1.82万
• 依托单位: Université de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=546756
• 关键词: Winds; Wolf; Rayet; Stars; Their

The Universe would be very different without massive stars. Indeed, they constitute the principal means by which material, and more particularly chemically enriched material, is exchanged between stars and the interstellar medium in galaxies. Most elements heavier than Carbon are fabricated within their core and they are injected into their surrounding medium in a spectacular way via supernova explosions. But throughout their short lives, massive stars also steadily inject matter, energy and momentum into the interstellar medium of galaxies in the form of a strong stellar wind. My research is about determining not only how much mass is lost by massive stars but also how it is lost; what is the structure of the wind. The stars I work on the most are named Wolf-Rayet (WR) stars in honor of the two scientists that discovered them at the end of the 19th century. These are generally massive stars that have reached the stage of burning Helium in their core.

如果没有大质量恒星，宇宙将会非常不同。事实上，它们构成了物质，特别是化学富集物质在恒星和星系星际介质之间交换的主要手段。大多数比碳重的元素都是在它们的核心内制造的，它们通过超新星爆炸以壮观的方式注入周围的介质。但在它们短暂的生命中，大质量恒星也以强烈的恒星风的形式稳定地向星系的星际介质注入物质、能量和动量。我的研究不仅要确定大质量恒星损失了多少质量，还要确定损失的方式;风的结构是什么。我研究最多的恒星被命名为沃尔夫-拉叶（WR）星，以荣誉在世纪末发现它们的两位科学家。这些恒星通常是大质量恒星，其核心已经达到燃烧氦的阶段。