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
• 负责人: Michael Reed
• 金额: $ 15.07万
• 依托单位: Missouri State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-15 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1312869&HistoricalAwards=false
• 关键词: RUI; Asteroseismology; subdwarf; stars; representatives

The researchers will analyze data already in hand from the Kepler satellite of sdB stars, obtain new ground-based high-speed multicolor observations of these stars to supplement the observations for further analysis, and generate perturbed atmospheric models to interpret all the observations. Finally, they will generate evolutionary models which match the data and test the physics within sdB stars. Subdwarf B (sdB) stars are horizontal branch stars that are low mass white dwarf precursors. They are envelope-stripped objects which are very blue and UV bright yet retain sufficient mass to be core helium burning stars. Their progenitors are stars like our sun and are responsible for the UV excess detected in some elliptical galaxies and globular clusters. Undergraduate students will take part in the proposed research program by obtaining, reducing and analyzing data and then disseminating results at conferences and in papers. The PI will work to increase the participation of underrepresented minorities in STEM fields. Additionally, the PI and his team (including undergraduate students) will collaborate with scientists on a national level (including in Iowa and with the Whole Earth Telescope), and international level (including N. Ireland, Belgium and Poland, and the Nordic Optical Telescope).

研究人员将从SDB恒星的开普勒卫星中分析数据，从而获得这些恒星的基于地面的高速多色观测值，以补充进一步分析的观察结果，并产生扰动的大气模型以解释所有观察结果。最后，他们将生成与数据相匹配并测试SDB恒星中物理的进化模型。 Subdwarf B（SDB）恒星是水平分支星星，是低质量白矮人前体。它们是包板划分的物体，非常蓝色，紫外线明亮，但保留了足够的质量，可以作为核心氦气燃烧的星星。他们的祖细胞是像我们的太阳这样的恒星，负责在某些椭圆星系和球形簇中检测到的紫外线过量。 本科生将通过获取，减少和分析数据，然后在会议和论文中传播结果来参加拟议的研究计划。 PI将努力增加代表性不足的少数民族在STEM领域的参与。 此外，PI及其团队（包括本科生）将在国家一级（包括在爱荷华州和整个地球望远镜）和国际层面（包括爱尔兰，爱尔兰，比利时和波兰以及北欧光学望远镜）与科学家合作。