The Evolutionary Sequence of Giant Molecular Clouds in M51

M51巨型分子云的演化序列

• 批准号: 173134848
• 负责人: Dr. Eva Schinnerer
• 金额: --
• 依托单位: Max-Planck-Institut für Astronomie (MPIA)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/173134848?language=en
• 关键词: Evolutionary; Sequence; Giant; Molecular; Clouds

The recently started IRAM/PdBI Large Project ’GMCs in M51’ (PI Schinnerer) will resolve the molecular gas (traced by its CO emission) into individual giant molecular clouds (GMCs) within the central 9 kpc of M51a at 40 pc resolution – the first time any grand design spiral galaxy will be mapped with the resolution to distinguish individual GMCs. This legacy dataset will enable an unprecedented view of the formation and evolution of the fundamental units of the star-forming interstellar medium (ISM) in a massive spiral galaxy besides our own. The objectives of this project are to measure the GMC luminosity function across several distinct environments (center, spiral arm/inter-arm region), the star formation efficiency of individual GMCs (i.e. a resolved Schmidt law), and the spatial correlations among GMCs, spiral structure, star clusters, and star formation tracers with varying age sensitivities. This will yield new constraints on fundamental questions: What kind of GMCs are created in different environments? How efficiently do they form stars? And how long do they live? Funding for one post-doc and one PhD student (for 3 years) is requested to help with the complex data reduction and analysis and the interpretation of this unique dataset on external GMCs utilizing ancillary data from UV to infrared and radio wavelengths.

最近开始的IRAM/PdBI大型项目“M51中的GMCs”（PI Schinnerer）将以40 pc的分辨率将分子气体（通过其CO排放追踪）分解为M51 a中央9 kpc内的单个巨型分子云（GMCs）-这是第一次将任何大型螺旋星系的分辨率映射为区分单个GMCs。这个遗留的数据集将使我们能够前所未有地了解除了我们自己之外的大规模螺旋星系中恒星形成星际介质（ISM）的基本单位的形成和演变。该项目的目标是测量GMC的光度函数在几个不同的环境（中心，旋臂/臂间区域），星星形成效率的个别GMC（即解决施密特定律），和GMC之间的空间相关性，螺旋结构，星星集群，和星星形成示踪剂与不同的年龄敏感性。这将对基本问题产生新的约束：在不同的环境中会产生什么样的GMC？它们形成恒星的效率如何？它们能活多久？申请资助一名博士后和一名博士生（为期3年），以帮助进行复杂的数据简化和分析，并利用从紫外线到红外线和无线电波长的辅助数据解释关于外部GMC的这一独特数据集。

项目成果

A COMPARATIVE STUDY OF GIANT MOLECULAR CLOUDS IN M51, M33, AND THE LARGE MAGELLANIC CLOUD

M51、M33和大麦哲伦云巨分子云的比较研究

• DOI: 10.1088/0004-637x/779/1/46
• 发表时间: 2013
• 期刊: The Astrophysical Journal
• 作者: Hughes;Colombo;Schinnerer
• 通讯作者: Schinnerer

THE PdBI ARCSECOND WHIRLPOOL SURVEY (PAWS): MULTI-PHASE COLD GAS KINEMATIC OF M51

• DOI: 10.1088/0004-637x/784/1/4
• 发表时间: 2014-01
• 期刊: The Astrophysical Journal
• 作者: D. Colombo;S. Meidt;E. Schinnerer;S. García-Burillo;A. Hughes;J. Pety;A. Leroy;C. Dobbs;G. Dumas;T. Thompson;K. Schuster;C. Kramer

THE PdBI ARCSECOND WHIRLPOOL SURVEY (PAWS): ENVIRONMENTAL DEPENDENCE OF GIANT MOLECULAR CLOUD PROPERTIES IN M51

PdBI 弧秒漩涡调查 (PAWS)：M51 中巨分子云特性的环境依赖性

• DOI: 10.1088/0004-637x/784/1/3
• 发表时间: 2014
• 期刊: The Astrophysical Journal
• 作者: Colombo;Hughes;Schinnerer
• 通讯作者: Schinnerer

THE PdBI ARCSECOND WHIRLPOOL SURVEY (PAWS). I. A CLOUD-SCALE/MULTI-WAVELENGTH VIEW OF THE INTERSTELLAR MEDIUM IN A GRAND-DESIGN SPIRAL GALAXY

• DOI: 10.1088/0004-637x/779/1/42
• 发表时间: 2013-04
• 期刊: The Astrophysical Journal
• 作者: E. Schinnerer;S. Meidt;J. Pety;A. Hughes;D. Colombo;S. García-Burillo;K. Schuster;G. Dumas;C. Dobbs;A. Leroy;C. Kramer;T. Thompson;M. Regan