NStars: Spectroscopic Abundances in Nearby Solar-Type Stars

NStars：Spectroscopic Abundances in Nearby Solar-Type Stars（NStars：Spectroscopic Abundances in Nearby Solar-Type Stars）AST-0086576Dr. King正在使用低分辨率光谱学测量距离太阳60秒差距内的5000颗太阳型恒星的光球化学丰度。 额外的高分辨率光谱进行这些恒星的一个子集，以检查色球活动的频率，多样性，运动学，旋转速率，年龄和金属丰度，以解决有关行星同伴，星周环境和银河系化学演化历史的问题。 该项目还试图解决这些参数如何在附近的疏散星团中的恒星之间变化。 必要的观测在NSF支持的Cerro Tololo美洲天文台以及Lick、Keck和McDonald天文台进行。 在这个项目中收集到的大量太阳附近恒星的信息被纳入NStars数据库，在那里天文学界可以广泛地获得这些信息。这个项目的资金是由NSF恒星天文天体物理学（AST/SAA）计划通过NSF/NASA联合的“邻近恒星（NStars）”倡议和NSF数学物理科学理事会多学科活动办公室（MPS/OMA）提供的。

ABSTRACTKing, Jeremy"NStars: Spectroscopic Abundances in Nearby Solar-Type Stars"AST-0086576Dr. King is measuring photospheric chemical abundances for 5000 solar-type stars within 60 parsecs of the Sun using low-resolution spectroscopy. Additional high resolution spectroscopy is performed for a subset of these stars to examine the frequency of chromospheric activity, multiplicity, kinematics, rotation rates, ages, and metallicities with which to address issues concerning planetary companions, circumstellar environment, and the Galactic chemical evolution history. The project also seeks to address how these parameters vary among stars in nearby open clusters. The necessary observations are performed at NSF-supported Cerro Tololo Inter-American Observatory, and the Lick, Keck and McDonald Observatories. The large quantity of information on stars in the solar neighborhood that is collected in the course of this project is incorporated into the NStars database, where it is widely available to the astronomical community.Funding for this project was provided by the NSF Stellar Astronomy & Astrophysics (AST/SAA) program through the joint NSF/NASA "Nearby Stars (NStars)" initiative, and the NSF Mathematical & Physical Sciences Directorate Office of Multidisciplinary Activities (MPS/OMA).