The Dust Enrichment of Galaxies

星系的尘埃富集

• 批准号: ST/G002827/1
• 负责人: Michael Barlow
• 金额: $ 41.57万
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2009
• 资助国家: 英国
• 起止时间: 2009 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FG002827%2F1
• 关键词: Dust; Enrichment; Galaxies

Interstellar dust plays a key role in the evolution of galaxies, particularly during the star formation process. During their AGB red giant phase of evolution, low and intermediate mass stars are known to be important contributors to the interstellar dust budgets of galaxies like our own. However, massive stars, and their core-collapse (CC) supernovae, could potentially make a significant contribution to the dust budgets of some galaxies, particularly during their earliest stages of evolution.The copious amounts of dust observed in many high-z galaxies are not believed to be produced by low and intermediate mass stars, since the galaxy ages of 1 Gyr or less are too short for significant numbers of AGB stars to be present. Massive stars, and their CC SNe, arising from the starbursts that power these galaxies, are the most plausible sources of their dust. This proposal seeks to renew a current PDRA grant for three years, from September 2009, in order to exploit significant time allocations that have been made for spaceborne studies with Herschel, Spitzer and the HST. These observations, coupled with optimal data reduction procedures and appropriate radiative transfer modelling, can enable a quantification of the contributions of high mass stars and of lower mass stars to the dust enrichment rates of different galaxy types.

星际尘埃在星系的演化过程中起着关键作用，特别是在星星的形成过程中。在它们的AGB红巨星演化阶段，低质量和中等质量的恒星被认为是像我们这样的星系的星际尘埃预算的重要贡献者。然而，大质量恒星和它们的核心坍缩（CC）超新星可能对一些星系的尘埃收支做出重大贡献，特别是在它们演化的最早阶段。在许多高z星系中观察到的大量尘埃不被认为是由低质量和中等质量恒星产生的，因为1 Gyr或更少的星系年龄太短，不可能存在大量的AGB恒星。大质量恒星和它们的CC SNe，从为这些星系提供动力的恒星爆发中产生，是它们尘埃的最合理来源。该提案旨在将目前的PDRA赠款从2009年9月起延长三年，以便利用为Herschel，Spitzer和HST的空间研究分配的大量时间。这些观测，加上最佳的数据简化程序和适当的辐射传输模型，可以量化高质量恒星和较低质量恒星对不同星系类型尘埃富集率的贡献。

项目成果

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

SN 2007od: A TYPE IIP SUPERNOVA WITH CIRCUMSTELLAR INTERACTION

• DOI: 10.1088/0004-637x/715/1/541
• 发表时间: 2010-04
• 期刊: The Astrophysical Journal
• 作者: J. Andrews;J. Gallagher;G. Clayton;B. Sugerman;J. Chatelain;J. Clem;D. Welch;M. Barlow;B. Ercolano;J. Fabbri;R. Wesson;M. Meixner

EVIDENCE FOR PRE-EXISTING DUST IN THE BRIGHT TYPE IIn SN 2010jl

• DOI: 10.1088/0004-6256/142/2/45
• 发表时间: 2011-06
• 期刊: The Astronomical Journal
• 作者: J. Andrews;G. Clayton;R. Wesson;B. Sugerman;M. Barlow;J. Clem;B. Ercolano;J. Fabbri;J. Gallagher;A. Landolt;M. Meixner;M. Otsuka;D. Riebel;D. Welch

PHOTOMETRIC AND SPECTROSCOPIC EVOLUTION OF THE IIP SN 2007it TO DAY 944

IIP SN 2007it 至第 944 天的光度和光谱演变

• DOI: 10.1088/0004-637x/731/1/47
• 发表时间: 2011
• 期刊: The Astrophysical Journal
• 作者: Andrews J

Distinguishing between HII regions and planetary nebulae with Hi-GAL, WISE, MIPSGAL, and GLIMPSE

使用 Hi-GAL、WISE、MIPSGAL 和 GLIMPSE 区分 HII 区域和行星状星云

• DOI: 10.1051/0004-6361/201117640
• 发表时间: 2011
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Anderson L