New Observational Constraints on Thermonuclear Supernovae

热核超新星观测的新限制

• 批准号: 1009464
• 负责人: Peter Hoeflich
• 金额: $ 37.13万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-10-01 至 2015-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1009464&HistoricalAwards=false
• 关键词: New; Observational; Constraints; Thermonuclear; Supernovae

This award will support an observational program to address a number of new and long-standing problems of thermonuclear supernovae. This program will involve the coordinated observation of nearby supernovae with optical and near-infrared spectrographs on 4m and 8m class telescopes at both early times (first month or so after explosion) and at late epochs (6-12 months after explosion). To complement the spectral observations, high-cadence (roughly nightly) photometric light curves of the target supernovae will also be obtained using the 2m robotic Liverpool Telescope. The analysis will make use of results from optical spectropolarimetry in an ongoing international campaign. The program will also benefit from a close relationship with theoretical and numerical work on thermonuclear supernovae being conducted at Florida State University.The study of thermonuclear supernovae is important to a number of branches of astrophysics. These supernovae represent the end state of the evolution of certain low-mass binary star systems. They significantly affect the energy balance and chemical evolution of the interstellar medium, and are astrophysical laboratories for nuclear physics in exotic regimes. They are among the brightest events in the universe, and exhibit a homogeneity that makes them the premier tools for measuring extragalactic distances. They have played a central role in the discovery of the acceleration of the expansion of the universe and have a key role in attempts to constrain the nature of dark energy.This project will also support ongoing efforts to build astrophysics research at Florida State University (FSU). As a part of this effort, the department has launched a new undergraduate major in Physics and Astrophysics. The undergraduate population of FSU is diverse, roughly 25% minority students, 57% women, and also containing a high proportion of first generation college students. The astrophysics group hopes to attract these students to astrophysics through a combination of strong teaching and undergraduate research opportunities, including research in this project. The physics department has a strong tradition of outreach with active programs working to provide educational materials to K-12 schools and an on-site planetarium.

该奖项将支持一项观察计划，以解决许多热核超新星的新长期问题。该程序将涉及对附近的超新星的协调观察，并在早期（爆炸后的第一个月左右）和时期（爆炸后6-12个月）和近期望远镜上使用光学和近红外光谱仪进行光学和近红外光谱仪。为了补充光谱观测，还将使用2M机器人的利物浦望远镜获得目标超新星的高度（每晚）光度光曲线。该分析将利用正在进行的国际运动中的光谱光谱法的结果。该计划还将受益于与佛罗里达州立大学进行热核超新星的理论和数值工作的密切关系。对热核超新星的研究对许多天体物理学分支很重要。这些超新星代表了某些低质量二进制恒星系统演变的末端状态。它们显着影响星际培养基的能量平衡和化学演化，是外来制度中核物理学的天体物理实验室。它们是宇宙中最聪明的事件之一，并且表现出同质性，使它们成为测量外层面距离的主要工具。他们在发现宇宙扩展的加速度中发挥了核心作用，并在限制黑暗能源本质的尝试中发挥了关键作用。该项目还将支持佛罗里达州立大学（FSU）建立天体物理学研究的持续努力。作为这项工作的一部分，该部门启动了物理和天体物理学的新本科专业。 FSU的本科生人口是多样的，大约25％的少数民族学生，57％的女性，还包含一部分第一代大学生。天体物理学小组希望通过强大的教学和本科研究机会（包括该项目的研究）来吸引这些学生进入天体物理学。物理部门具有强大的传统传统，其主动计划旨在为K-12学校和现场天文馆提供教育材料。