The Planetary Nebula Spectrograph: The Green Light for Galaxy Kinematics
The Planetary Nebula Spectrograph: The Green Light for Galaxy Kinematics
复制标题
行星状星云摄谱仪：银河运动学的绿灯
DOI：
10.1086/342765
复制
发表时间：
2002
影响因子：
3.5
通讯作者：
D. Jones
中科院分区：
文献类型：
--
作者：
N. Douglas;M. Arnaboldi;K. Freeman;K. Kuijken;M. Merrifield;A. Romanowsky;K. Taylor;M. Capaccioli;T. Axelrod;R. Gilmozzi;J. Hart;G. Bloxham;D. Jones
Planetary nebulae (PNe) are now well established as probes of galaxy dynamics and as standard candles in distance determinations. Motivated by the need to improve the efficiency of planetary nebulae searches and the speed with which their radial velocities are determined, a dedicated instrument—the Planetary Nebula Spectrograph, or PN.S—has been designed and commissioned at the 4.2 m William Herschel Telescope. The high optical efficiency of the spectrograph results in the detection of typically ∼150 PNe in galaxies at the distance of the Virgo Cluster in one night of observations. In the same observation, the radial velocities are obtained with an accuracy of ∼20 km s-1.
