RUI: Asteroseismology of pulsating Subdwarf B stars via observational mode identification and modeling
RUI:通过观测模式识别和建模研究脉动亚矮星 B 星的星震学
基本信息
- 批准号:1009436
- 负责人:
- 金额:$ 37.31万
- 依托单位:
- 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:2010-09-01 至 2013-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
As the study of pulsating subdwarf B (sdB) stars has developed, one overriding question has emerged: do they pulsate in high-degree modes where the number of nodal lines is greater than three? Models need to include such modes to account for the observed number of pulsations, but they are less likely to be observed because of geometric cancelation across the stellar surface. This has constrained the usefulness of the models for inferring the interior conditions of sdB stars. There is currently no answer to this controversial question about high-degree modes, but techniques such as multicolor photometry and time-series spectroscopy can be applied to provide that answer. To address these issues, this project will 1) obtain high-speed multicolor observations of at least six pulsating sdB stars; 2) obtain time-series spectroscopic data of at least two stars; 3) generate perturbed atmospheric models to interpret the observations; and 4) generate evolutionary models to match constrained modes and test the physics within sdB stars. Multicolor photometry is especially sensitive to high-degree modes, yet can be obtained from modest-sized telescopes. This work will critically test the current generation of models by determining if the predicted high-degree modes exist, and will produce models incorporating the latest theories to match the observations.Increasing the accuracy of sdB models will increase understanding of the cores inside most horizontal branch stars, and mass constraints will test evolution scenarios. The research involves undergraduate students, who will obtain, reduce, and analyze data and disseminate the results at conferences and in papers.
随着脉动亚矮星B(sdB)研究的发展,一个压倒一切的问题出现了:它们是否以节线数大于3的高次模式脉动? 模型需要包括这样的模式来解释观测到的脉动数量,但由于恒星表面的几何抵消,它们不太可能被观测到。 这限制了模型的有用性,用于推断sdB星的内部条件。 目前还没有关于高阶模的这个有争议的问题的答案,但是可以应用诸如光谱光度学和时间序列光谱学的技术来提供这个答案。 为了解决这些问题,该项目将1)获得至少六颗脉动sdB星的高速射电观测; 2)获得至少两颗星的时间序列光谱数据; 3)生成扰动大气模型来解释观测结果; 4)生成演化模型来匹配约束模式并测试sdB星内的物理学。 多色测光对高次模式特别敏感,但可以通过中等大小的望远镜获得。 这项工作将严格测试当前一代的模型,确定是否存在预测的高度模式,并将产生模型,将最新的理论相匹配的observations.Increasing sdB模型的准确性将增加最水平的分支恒星内部的核心的理解,和质量约束将测试演化的情况。 该研究涉及本科生,他们将获得,减少和分析数据,并在会议和论文中传播结果。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Michael Reed其他文献
Persistent Fetal Gene Expression Patterns During Assist Device Support
辅助设备支持期间持续的胎儿基因表达模式
- DOI:
- 发表时间:
2009 - 期刊:
- 影响因子:0
- 作者:
B. Lowes;R. Zolty;S. Shakar;A. Brieke;Norman;Gray;Michael Reed;M. Calalb;W. Minobe;J. Lindenfeld;E. Wolfel;M. Geraci;M. Bristow;J. Cleveland - 通讯作者:
J. Cleveland
A Novel Intervention to Reduce Bronchoscopy Laboratory Costs
- DOI:
10.1378/chest.1993730 - 发表时间:
2014-10-01 - 期刊:
- 影响因子:
- 作者:
Kevin Kane;Christopher Gilbert;Jennifer Toth;Michael Reed - 通讯作者:
Michael Reed
Rationale for the Implementation of Low-Volume, High-Intensity Exercise in School Physical Education
学校体育实施小量高强度运动的理由
- DOI:
- 发表时间:
2017 - 期刊:
- 影响因子:0
- 作者:
Michael Reed;Kay Daigle - 通讯作者:
Kay Daigle
Endobronchial Valves as Destination Therapy for Secondary Spontaneous Pneumothorax in a Man With Acute Myelogenous Leukemia
- DOI:
10.1378/chest.1701367 - 发表时间:
2013-10-01 - 期刊:
- 影响因子:
- 作者:
Umar Osman;Jennifer Toth;Christopher Gilbert;Michael Reed - 通讯作者:
Michael Reed
A Case of Pulmonary Alveolar Microlithiasis Presenting as Crazy Paving
- DOI:
10.1378/chest.1989412 - 发表时间:
2014-10-01 - 期刊:
- 影响因子:
- 作者:
Umar Osman;Jennifer Toth;Christopher Gilbert;Michael Reed - 通讯作者:
Michael Reed
Michael Reed的其他文献
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{{ truncateString('Michael Reed', 18)}}的其他基金
Proposal Writing Workshop for Psychology Education Research and Development
心理学教育研究与发展提案写作研讨会
- 批准号:
2228188 - 财政年份:2022
- 资助金额:
$ 37.31万 - 项目类别:
Standard Grant
RUI: Asteroseismology of subdwarf B stars as representatives of high-temperature physics and horizontal branch stellar cores.
RUI:作为高温物理和水平分支恒星核心代表的亚矮B星的星震学。
- 批准号:
1312869 - 财政年份:2013
- 资助金额:
$ 37.31万 - 项目类别:
Continuing Grant
EMSW21-RTG: Enhanced Training and Recruitment in Mathematical Biology
EMSW21-RTG:数学生物学加强培训和招聘
- 批准号:
0943760 - 财政年份:2010
- 资助金额:
$ 37.31万 - 项目类别:
Continuing Grant
RUI: The Baker Observatory Sub-minute Survey: Exploring the galaxy at high temporal resolution.
RUI:贝克天文台亚分钟巡天:以高时间分辨率探索星系。
- 批准号:
0913175 - 财政年份:2009
- 资助金额:
$ 37.31万 - 项目类别:
Standard Grant
Analysis of Mechanisms of Biochemical Homeostasis
生化稳态机制分析
- 批准号:
0616710 - 财政年份:2006
- 资助金额:
$ 37.31万 - 项目类别:
Standard Grant
NER/SNB: Electronic Devices from Viral and Cytoskeletal Templates
NER/SNB:来自病毒和细胞骨架模板的电子设备
- 批准号:
0508338 - 财政年份:2005
- 资助金额:
$ 37.31万 - 项目类别:
Standard Grant
NIRT: Science and Technology of Nanoporous Metal Films
NIRT:纳米多孔金属薄膜科学与技术
- 批准号:
0507023 - 财政年份:2005
- 资助金额:
$ 37.31万 - 项目类别:
Standard Grant
Understanding subdwarf B stars through asteroseismology
通过星震学了解亚矮星 B 星
- 批准号:
0307480 - 财政年份:2003
- 资助金额:
$ 37.31万 - 项目类别:
Standard Grant
Mathematical Investigation of Neural Processing in the Auditory Brainstem
听觉脑干神经处理的数学研究
- 批准号:
9805761 - 财政年份:1998
- 资助金额:
$ 37.31万 - 项目类别:
Standard Grant
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