Stellar Populations and Dust Extinction in Disk Galaxies

盘状星系中的恒星种群和尘埃灭绝

• 批准号: 35839078
• 负责人: Professorin Dr. Uta Fritze-von Alvensleben
• 金额: --
• 依托单位: Centre for Astrophysics Research
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/35839078?language=en
• 关键词: Stellar; Populations; Dust; Extinction; Disk

The main aim of this proposal is to study stellar age and metallicity gradients and dust extinction for a large number of nearby disk galaxies. The sample galaxies will be selected to cover a wide range of parameters, such as nuclear activity (non-active galaxies versus active galaxies), surface brightness (normal spiral galaxies versus LSB spiral galaxies) and environment (cluster versus field). The sample of near infrared data which we request to observe with the IRSF will be complemented with deep optical data with the SALT/SALTICAM. These data will be analyzed using radiation transfer models, including a realistic parametrization of the 3D distribution of dust and stars in disk galaxies, and refined evolutionary synthesis models.

这项提议的主要目的是研究大量邻近盘状星系的恒星年龄和金属丰度梯度以及尘埃消光。样本星系的选择将涵盖广泛的参数，如核活动（非活动星系与活动星系），表面亮度（正常螺旋星系与LSB螺旋星系）和环境（集群与场）。我们要求用IRSF观测的近红外数据样本将由SALT/SALTICAM的深层光学数据加以补充。这些数据将使用辐射传输模型进行分析，包括盘状星系中尘埃和恒星的三维分布的现实参数化，以及改进的进化合成模型。