Determination of Star Formation Rate by Monitoring Supernovae

这项研究的目的是通过监测局部核心坍缩超新星的速率来确定星星的形成速率。这一目标可以通过充分利用Ashra的独特能力来实现。从2007财政年度开始，我们在Ashra Mauna Loa现场部署了探测器，并开发了数据采集系统和环境监测系统。我们从2008年开始进行光学观测。截至2009财年末，累计观测时间达到2774小时。总结我们的观测，我们的良好天气率达93%，营运效率达99%。这种稳定的长期观测是超新星搜索的必要条件。对于超新星分析，我们首先发展了极限星等分析，因为这是全光学分析的基础。目前，我们正在开发超新星搜索系统和敏感性评估系统。

The aim of this research is to determine star formation rate by monitoring local core-collapse supernova rate. This aim can be achieved by taking full advantage of Ashra's unique capability. From fiscal year 2007, we deployed our detector units in the Ashra Mauna Loa site and developed data acquisition system and environment monitoring system. We started optical observation in 2008. As of the end of fiscal year 2009, accumulated observation time reached 2774 hours. As a summary of our observation, we achieved good weather rate of 93% and operation efficiency of 99%. This stable long term observation is mandatory for supernova search. As to supernova analysis, we developed limiting magnitude analysis at first since this is the basic of all optical analysis. Currently, we are working to develop supernova search system and sensitivity evaluation system.