Supernova Progenitors, Stellar Remnants, and their Binary Companions

超新星前身、恒星遗迹及其双星伴星

基本信息

批准号：
1517753
负责人：
Vassiliki Kalogera
金额：
$ 40.25万
依托单位：
Northwestern University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2015
资助国家：
美国
起止时间：
2015-09-01 至 2019-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1517753&HistoricalAwards=false
关键词：
Supernova Progenitors Stellar Remnants their

项目摘要

The study of binary stellar systems has attracted renewed attention in the past decade as they are shown to play a critical role in a wide range of astronomy areas: X-ray and pulsar binaries, gamma-ray bursts, extrasolar planets, gravitational-wave sources, supernova (SN) progenitors, cosmology, and especially transient astronomy. Observational advances have transformed the landscape and have highlighted the limitations of current modeling attempts. At the same time binary evolution modeling has not advanced significantly in the past decade; in turn, this has limited our ability to understand and interpret a number of current observational results related to binary populations. Building on their past experience, the investigators in this project will advance the physical sophistication of binary modeling and compact object formation and evolution. They will develop the next-generation binary-populations simulation tool (PSyDLib) with major, key advantages for self-consistent, physical modeling. The team will take advantage of the continued increase in computational power and the public availability of MESA, a versatile, robust stellar structure and evolution code. All the simulation codes will be made publicly available for other research projects.This project will take advantage of the PI's established connections with local schools (urban and suburban in the Chicago area), prior/current work with high-school teachers, and astronomy's appeal to children to address a critical need in elementary- and middle-school level STEM education. At all school levels the Next Generation Science Standards that are currently being implemented call for the introduction and use of computational thinking and modeling. However, in this area most school teachers do not have expertise and voice their need for professional development and appropriate curriculum materials. In collaboration with small teams of experienced teachers, the PI will develop computational astronomy curriculum materials. The PI will also capitalize on past work on astronomy visualizations and develop new ones for mass transfer in binaries and X-ray binary formation. The PI will use them extensively at public outreach presentations at Chicago's Adler Planetarium and the Evanston High School new planetarium. The PI will also involve two female graduate students who will be trained in advanced computation, hence contributing to a diverse, globally competitive STEM workforce.More technically, the team will develop new modules and an innovative hybrid software structure to incorporate (i) realistic mass-transfer sequences and physical assessment of stability, (ii) advanced treatment of common-envelope evolution eliminating the need for ad-hoc parameterization, and (iii) self-consistent orbital evolution for the general case of eccentric, asynchronous binaries due to tides and mass transfer. The project's science goals focus on studies of (i) core-collapse supernovae in terms of the physical properties of both their progenitors and their binary companions and compare to observational results from supernova surveys and (ii) high-mass X-ray binaries in the Milky Way and the Magellanic Clouds, which provide a plethora of observed systems with very different properties than originally expected. Given the more substantial XRB samples, the investigators will actually use the comparisons in (ii) to calibrate their models and assess the reliability of predictions for (i). The anticipated results will not only help to explain current observations but will also provide motivation and predictions for future multi-wavelength observations.

在过去的十年中，对二进制恒星系统的研究引起了人们的重新关注，因为它们被证明在各种天文学领域都起着至关重要的作用：X射线和脉冲星二进制物，伽马射线爆发，外星外行星，引力波，重力 - 波源，超级NOVA（SN）祖细胞（SN）祖细胞，祖细胞，宇宙学杂物，尤其是瞬用的属性属性。观察的进步改变了景观，并强调了当前建模尝试的局限性。同时，在过去十年中，二进制演化建模并未显着发展。反过来，这限制了我们理解和解释与二元人群有关的许多当前观察结果的能力。在他们过去的经验的基础上，该项目的调查人员将推动二进制建模和紧凑对象形成和进化的物理成熟。他们将开发下一代二进制模拟工具（Psydlib），具有主要的，主要的物理建模的关键优势。该团队将利用计算能力的持续增加以及MESA的公共可用性，MESA是一种多功能，强大的恒星结构和演变代码。所有模拟代码将公开用于其他研究项目。该项目将利用PI与当地学校（芝加哥地区的城市和郊区）建立的联系，与高中教师的先进/当前工作，并且天文学对儿童的吸引力可以解决基础和中学水平的重要需求。在所有学校层面上，目前正在实施的下一代科学标准都要求引入和使用计算思维和建模。但是，在这方面，大多数学校教师没有专业知识，并且表达了他们对专业发展和适当课程材料的需求。与小型老师团队合作，PI将开发计算天文学课程材料。 PI还将利用过去关于天文学可视化的工作，并为二进制和X射线二进制形成的传质开发新的工作。 PI将在芝加哥阿德勒天文馆和埃文斯顿高中新天文馆举行的公共宣传演讲中广泛使用它们。 The PI will also involve two female graduate students who will be trained in advanced computation, hence contributing to a diverse, globally competitive STEM workforce.More technically, the team will develop new modules and an innovative hybrid software structure to incorporate (i) realistic mass-transfer sequences and physical assessment of stability, (ii) advanced treatment of common-envelope evolution eliminating the need for ad-hoc parameterization, and (iii)由于潮汐和传质而导致的偏心，异步二进制的一般情况，自洽的轨道进化。该项目的科学目标将重点放在（i）从其祖细胞和二元伴侣的物理特性方面对（i）核心爆发超新星进行研究，并与超级新闻调查的观察结果和（ii）高质量X射线二进制二进制物的观察结果相比，与麦芽岩和麦哲伦相比，这提供了多个具有预期属性的属性。鉴于XRB样本更为实质，研究人员实际上将使用（ii）中的比较来校准其模型并评估（i）的预测可靠性。预期的结果不仅将有助于解释当前的观察结果，而且还将为未来的多波长观察提供动力和预测。

项目成果

期刊论文数量（3）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Pulsational Pair-instability Supernovae in Very Close Binaries

DOI：
10.3847/1538-4357/ab3426
发表时间：
2018-10
期刊：
The Astrophysical Journal
影响因子：
0
作者：
P. Marchant;M. Renzo;R. Farmer;K. M. W. Pappas;R. Taam;S. D. de Mink;V. Kalogera
通讯作者：
P. Marchant;M. Renzo;R. Farmer;K. M. W. Pappas;R. Taam;S. D. de Mink;V. Kalogera

On the Origin of Black Hole Spin in High-mass X-Ray Binaries