Stars, dust and gas: the life cycle of galaxies

恒星、尘埃和气体：星系的生命周期

• 批准号: ST/I001425/1
• 负责人: Albert Zijlstra
• 金额: $ 143.2万
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2011
• 资助国家: 英国
• 起止时间: 2011 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FI001425%2F1
• 关键词: Stars; dust; gas; life; cycle

The life cycle of matter describes the evolution of a galaxy. Collapsing clouds in the interstellar medium leads to star formation. This locks much of the gas reservoir of the galaxy away, in stars. At the end of their life, stars eject much of their gas back into space, either as a supernova, or through an extreme wind - our Sun will do the latter. The ejecta contain the products of nuclear burning and enrich the gas with elements such as carbon and oxygen. They also produce solid particles, called dust. The ejecta become part of the next generation of star formation, changing the appearance and evolution of these stars. This cycle of matter has been called the ecology of a galaxy. The dust also becomes incorporated in the cycle of matter and in the star formation, initiate the formation of planets. In our solar system, some dust grains have been found which date from the formation of the solar system. Their composition can be used as a fingerprint to identify the type of dying star from which they formed. We study this life cycle of matter: the formation of stars, their death, and the formation of planetary systems, making use of telescopes such as e-Merlin, ALMA, the VLT and the JCMT. We will idenitfy the type of stars from whose death gave rise to our solar system.

物质的生命周期描述了星系的演化。星际介质中的云坍塌导致了星星的形成。这就把星系中的大部分气体储存器锁在了恒星中。在它们生命的尽头，恒星会将它们的大部分气体喷射回太空，要么作为超新星，要么通过极端的风-我们的太阳会做后者。喷出物包含核燃烧的产物，并使气体中富含碳和氧等元素。它们还产生固体颗粒，称为灰尘。喷出物成为下一代星星形成的一部分，改变了这些恒星的外观和演化。这种物质循环被称为星系生态学。尘埃也成为纳入物质的循环和星星的形成，启动行星的形成。在我们的太阳系中，已经发现了一些可以追溯到太阳系形成时期的尘埃颗粒。它们的成分可以作为指纹来识别形成它们的垂死星星的类型。我们研究物质的生命周期：恒星的形成，它们的死亡，以及行星系统的形成，利用望远镜，如e-Merlin，阿尔马，VLT和JCMT。我们将确认哪些恒星的死亡导致了我们太阳系的诞生。

项目成果

PRISM (Polarized Radiation Imaging and Spectroscopy Mission): an extended white paper

• DOI: 10.1088/1475-7516/2014/02/006
• 发表时间: 2013-10
• 期刊: Journal of Cosmology and Astroparticle Physics
• 影响因子: 6.4
• 作者: Prism Collaboration Philippe Andr'e;C. Baccigalupi;A. Banday;D. Barbosa;B. Barreiro;J. Bartlett;N. Bart

Modelling the warm H2 infrared emission of the Helix nebula cometary knots Modelling the H2 emission of cometary knots

模拟螺旋星云彗星结的暖 H2 红外发射 模拟彗星结的 H2 发射

• DOI: 10.1111/j.1365-2966.2011.19094.x
• 发表时间: 2011
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Aleman I

The 2010 outburst and pre-outburst optical spectrum of the recurrent nova U Scorpii

复发新星天蝎座 U 2010 年爆发和爆发前的光谱

• DOI: 10.1051/0004-6361/201321262
• 发表时间: 2013
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Anupama G

STATISTICAL PROPERTIES OF 12.2 GHz METHANOL MASERS ASSOCIATED WITH A COMPLETE SAMPLE OF 6.7 GHz METHANOL MASERS

• DOI: 10.1088/0004-637x/733/2/80
• 发表时间: 2011-04
• 期刊: The Astrophysical Journal
• 作者: S. Breen;S. Ellingsen;J. Caswell;J. Green;G. Fuller;M. Voronkov;L. Quinn;A. Avison

ERRATUM: "SURVEYING THE AGENTS OF GALAXY EVOLUTION IN THE TIDALLY STRIPPED, LOW-METALLICITY SMALL MAGELLANIC CLOUD (SAGE-SMC). II. COOL EVOLVED STARS" (2011, AJ, 142, 103)

勘误表：“调查潮汐剥离、低金属度小麦哲伦云 (SAGE-SMC) 中星系演化的媒介。II. 酷演化恒星”(2011, AJ, 142, 103)

• DOI: 10.1088/0004-6256/143/5/127
• 发表时间: 2012
• 期刊: The Astronomical Journal
• 作者: Boyer M