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细胞恒星的性质，爆炸机制和不同类型超新星的核合成产物的集中努力。结果将对类似星系化学演化，脉冲星和宇宙学的化学演化等主题具有广泛的影响。所采用的方法在很大程度上是观察性的，再加上理论建模。将在附近星系中进行大力搜索新的超新星，并在Leuschner天文台使用自动成像望远镜进行，从而延长了一年多以前的努力。所有足够明亮的超新星的多色长期光曲线将在Lick天文台的第二个机器人望远镜中获得。还将使用最先进的设备获得高质量的光谱，以研究超新星的时间进化和统计特性。对数据的彻底分析应导致开发更完整的分类方案，该方案的重点是基本参数。除了对其起源和物理特征提供更深入的见解外，对附近超新星观察到的特性的定量评估还应提高超新星对宇宙学距离确定的潜力。新委托的凯克10米望远镜将用于获得非常遥远的超新星的光谱，以衡量宇宙的膨胀速率和整体曲率。 ***