Probing Galactic Structure and Evolution with Extragalactic Planetary Nebulae

单位：宾夕法尼亚州立大学教授：Robin ciardullo题目：用星系外行星状星云探测星系结构与演化宾夕法尼亚州立大学的Robin Ciardullo将承担三个利用星系外行星状星云（PNe）来研究天体物理问题的项目。项目包括：1)测量PNe在近面螺旋中的垂直运动学，以约束星系盘质量；2)测量M31星系凸起中PNe的组成，以了解明显的低氧丰度，并确定IA型超新星在M31凸起演化中的作用；3)探索室女座星系团内PNe的运动学，以确定星系团星系内星系团内恒星的相对重要性。这项工作产生的更广泛影响的主要领域涉及对本科生和研究生的培训，重点是来自传统上代表性不足的群体的学生。星系外行星状星云有如此多的用途，这一事实表明，从事这个项目的学生将接触到天文学的许多主题。最后，还将开展公众宣传活动。

AST-0607416INSTITUTION: Pennsylvania State UniversityPI: Robin CiardulloTITLE: Probing Galactic Structure and Evolution with Extragalactic Planetary NebulaeABSTRACTDr.. Robin Ciardullo, at the Pennsylvania State University, will undertake three projects that utilize extragalactic planetary nebulae (PNe) to investigate astrophysical questions. The projects consist of: 1) the measurement of the perpendicular kinematics of PNe in near face-on spirals, to constrain galaxy disk masses; 2) the measurement of the composition of PNe in the bulge of the galaxy M31, to understand both an apparent low oxygen abundance and to determine the role of type IA supernovae in the evolution of the M31 bulge; and 3) to probe the kinematics of the Virgo cluster intra-cluster PNe, to determine the relative importance of intra-cluster stars within cluster galaxies..The major area of broader impact that results from this work involves the training of undergraduate and graduate students, with an emphasis on students from traditionally under-represented groups. The fact that extragalactic planetary nebulae have so many uses suggests that students who work on this project are exposed to a great many topics in astronomy. Finally, public outreach activities will also be undertaken.