Discovery, Photometry, and Spectroscopy of Supernovae

超新星的发现、光度测定和光谱学

基本信息

批准号：
9417213
负责人：
Alexei Filippenko
金额：
$ 43.3万
依托单位：
University of California-Berkeley
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1994
资助国家：
美国
起止时间：
1994-12-15 至 2001-02-28
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9417213&HistoricalAwards=false
关键词：
Discovery Photometry Spectroscopy Supernovae

项目摘要

Filippenko 9417213 This research represents a concentrated effort to determine the nature of the progenitor stars, the explosion mechanisms, and the nucleosynthetic products of different types of supernovae. The results will have broad implications for topics as diverse as the chemical evolution of galaxies, the birthrate of pulsars, and cosmology. The adopted approach is largely observational, coupled with theoretical modeling. A vigorous search for new supernovae in nearby galaxies will be conducted with an automated imaging telescope at Leuschner Observatory, thereby extending an effort that began over a year ago. Multi-color, long-term light curves of all sufficiently bright supernovae will be obtained with a second robotic telescope at Lick Observatory. High-quality optical spectra will also be obtained with state-of-the-art equipment in order to study the temporal evolution and statistical properties of supernovae. Thorough analysis of the data should lead to the development of a more complete classification scheme that focuses on fundamental parameters. Besides providing deeper insights into their origins and physical characteristics, quantitative assessment of the observed properties of nearby supernovae should improve the potential of supernovae for cosmological distance determinations. The newly commissioned Keck 10-meter telescope will be used to obtain spectra of very distant supernovae, in an attempt to measure the expansion rate and overall curvature of the Universe. ***

Filippenko 9417213 这项研究代表了确定祖星性质、爆炸机制以及不同类型超新星核合成产物的集中努力。研究结果将对星系的化学演化、脉冲星的诞生率和宇宙学等多种主题产生广泛的影响。所采用的方法主要是观察性的，并与理论建模相结合。洛伊施纳天文台的自动成像望远镜将在附近星系中积极寻找新的超新星，从而延续一年多前开始的努力。利克天文台的第二台机器人望远镜将获得所有足够明亮的超新星的多色、长期光变曲线。还将利用最先进的设备获得高质量的光谱，以研究超新星的时间演化和统计特性。对数据的彻底分析应该会导致开发出更完整的、侧重于基本参数的分类方案。除了提供对其起源和物理特征的更深入了解之外，对附近超新星观测到的特性进行定量评估还应提高超新星确定宇宙学距离的潜力。新投入使用的凯克 10 米望远镜将用于获取非常遥远的超新星的光谱，试图测量宇宙的膨胀率和整体曲率。 ***