The Integrated Spectra of Stellar Systems

对星系中古老恒星群的研究将是 主要是通过分析综合 椭圆星系和球状星团的光谱。 的 早期型星系的恒星含量将通过 集成光技术以前开发的。 主要的重点 将对椭圆星系进行比较研究， 密集的星系团和相对孤立的星系 地区 环境对形成和早期的影响 将对这些系统的演变进行评估。 相关工作将 在球形星系的圆盘上进行。 的探索 椭圆星系的近紫外光谱也将 贯彻 球状星团通常被认为是 集成光研究的测试案例，但以前的工作 在他们的生活中展现出了意想不到的复杂程度 积分光谱 将开展若干项目， 更好地理解这种复杂的行为。 的替代 研究外星系中的古老种群是为了 详细研究了火山的崩塌和早期化学富集作用， 我们的银河系 银河两极的客观棱镜巡天 会完成的 该调查旨在产生高质量的 一个非常大的径向速度和大气参数 星星的数量。 我们的垂直物理结构 银河系的密度，化学成分和运动学， 测定

A study of the old stellar populations in galaxies will be carried out, mainly through an analysis of the integrated spectra of elliptical galaxies and globular clusters. The stellar content of early-type galaxies will be studied through integrated light techniques previously developed. The main focus will be to make a comparative study of elliptical galaxies in dense clusters of galaxies versus galaxies in relatively isolated regions. The effect of environment on the formation and early evolution of these systems will be evaluated. Related work will be done on the disks of spherical galaxies. An exploration of the near-ultraviolet spectrum of elliptical galaxies will also be carried out. Globular clusters are often considered as crucial test cases for integrated light studies, but previous work has demonstrated an unexpected degree of complexity in their integrated spectra. Several projects will be carried out to better understand this complex behavior. An alternative to studying the old population in external galaxies is to carry out a detailed study of the collapse and early chemical enrichment of our Galaxy. An objective prism survey of both galactic poles will be done. The survey is designed to produce high-quality radial velocities and atmospheric parameters for a very large number of stars. The perpendicular physical structure of our Galaxy in density, chemical composition, and kinematics will be determined.