Key Insights in Nearby Galaxies: Radio Continuum Survey of the KINGFISH Galaxies

附近星系的关键见解：KINGFISH 星系的射电连续巡天

• 批准号: 190169462
• 负责人: Dr. Fatemeh Tabatabaei
• 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: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/190169462?language=en
• 关键词: Key; Insights; Nearby; Galaxies; Radio

Nearby galaxies provide ideal laboratories for studying astrophysical processes that regulate the evolution of galaxies, among them the interplay between the star formation and ISM. The Herschel space observatory stands poised to make major breakthroughs in this area, by mapping with unprecedented spatial resolution the emission from dust and the gas content of galaxies. As an extinction-free tracer of star formation, the radio continuum emission provides crucial complementary information about magnetic fields and cosmic ray electrons (CREs). Only recently variations of one of the tightest and most universal relations, the radio-IR correlation, became apparent when studying scales within galaxies. However, this needs to be established by studying a comprehensive sample of galaxies spanning a large range in star formation and magnetic field properties. Taking full advantage of the KINGFISH dataset along with our careful techniques for separating the radio continuum components we plan to a) use our Effelsberg data to analyze for the first time global relations between star formation, magnetic fields, and synchrotron spectral index, b) dissect the radio-IR relation in its various component using Herschel PACS+SPIRE and VLA+Effelsberg data for NGC6946 and c) assemble the ultimate high resolution radio continuum database for nearby galaxies using EVLA.

附近的星系为研究调节星系演化的天体物理过程提供了理想的实验室，其中包括恒星形成和ISM之间的相互作用。赫歇尔太空天文台准备在这一领域取得重大突破，以前所未有的空间分辨率绘制尘埃发射和星系气体含量的地图。作为恒星形成的无消光示踪剂，射电连续谱发射提供了有关磁场和宇宙射线电子（CRE）的重要补充信息。直到最近，在研究星系内的尺度时，最紧密和最普遍的关系之一——射电-红外相关性——的变化才变得明显。然而，这需要通过研究跨越大范围恒星形成和磁场特性的星系综合样本来确定。充分利用 KINGFISH 数据集以及我们用于分离射电连续谱成分的谨慎技术，我们计划 a) 使用我们的 Effelsberg 数据首次分析恒星形成、磁场和同步加速器光谱指数之间的全局关系，b) 剖析使用 NGC6946 的 Herschel PACS+SPIRE 和 VLA+Effelsberg 数据来确定其各个组件中的射电红外关系，以及 c) 为附近星系组装终极高分辨率射电连续谱数据库使用 EVLA。

项目成果

A detailed study of the radio-FIR correlation in NGC 6946 with Herschel-PACS/SPIRE from KINGFISH

使用 KINGFISH 的 Herschel-PACS/SPIRE 对 NGC 6946 中的无线电 FIR 相关性进行详细研究

• DOI: 10.1051/0004-6361/201220249
• 发表时间: 2013-01-29
• 期刊: Astronomy and Astrophysics
• 影响因子: 6.5
• 作者: F. Tabatabaei;E. Schinnerer;E. Murphy;R. Beck;B. Groves;S. Meidt;M. Krause;H. Rix;K. S;strom;strom;A. Crocker;M. Galametz;G. Helou;C. Wilson;R. Kennicutt;D. Calzetti;B. Draine;G. Aniano;D. Dale;G. Dumas;C. Engelbracht;C. Engelbracht;K. D. Gordon;J. Hinz;K. Kreckel;E. Montiel;H. Roussel
• 通讯作者: H. Roussel

Multi-scale radio-infrared correlations in M 31 and M 33: The role of magnetic fields and star formation

• DOI: 10.1051/0004-6361/201218909
• 发表时间: 2013-07-23
• 期刊: Astronomy and Astrophysics
• 影响因子: 6.5
• 作者: F. Tabatabaei;E. M. Berkhuijsen;P. Frick;R. Beck;E. Schinnerer
• 通讯作者: E. Schinnerer