Starformation and stellar populations in nearby galaxies

附近星系中的恒星形成和恒星种群

• 批准号: 5329728
• 负责人: Professor Dr. Ralf-Jürgen Dettmar
• 金额: --
• 依托单位: Lehrstuhl für Astronomie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2001
• 资助国家: 德国
• 起止时间: 2000-12-31 至 2001-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5329728?language=en
• 关键词: Starformation; stellar; populations; nearby; galaxies

Observations to be conducted at Calar Alto Observatory have the following goals:1) We propose to derive the structure and stellar composition for a sample of low surface brightness galaxies (LSBs) by means of a photometric study in broadband filters. This will enable us to address the problem of the origin and evolution for this class of galaxies.2) Imaging at optical and NIR wavelengths will be used to study the stellar population of the central regions in disk galaxies in order to reveal the interplay between a bar and the bulge component. 3) The comparison of H_alpha narrowband imaging and radio-continuum measurements will allow us to examine the star-formation on larger scales in disk galaxies and to search for a correlation of magnetic field structures with actual regions of star formation.4) Studying the very outer parts of disk galaxies provide us a unique laboratory to characterise star formation in a more quiescent environment. This will be done by taking very deep broadband images of the truncation region of face-on galaxies hitherto only observed in the edge-on geometry.

将在Calar Alto天文台进行的观测有以下目标：1)我们建议通过宽带滤光片的光度学研究，得出低表面亮度星系(LSB)的结构和恒星组成。这将使我们能够解决这类星系的起源和演化问题。2)在光学和近红外波长的成像将被用来研究盘状星系中心区域的恒星群，以揭示棒状星系和凸起成分之间的相互作用。3)H_α窄带成像和射电连续谱测量的比较将使我们能够在更大的尺度上研究盘状星系中的恒星形成，并寻找磁场结构与恒星形成的实际区域之间的关联。4)研究盘状星系的最外围部分为我们提供了一个独特的实验室来描述在更安静的环境中的恒星形成。这将通过拍摄迄今为止只在边缘几何中观察到的面对面星系截断区域的非常深的宽带图像来完成。