RUI: Asteroseismology of subdwarf B stars as representatives of high-temperature physics and horizontal branch stellar cores.

研究人员将分析开普勒卫星已经获得的sdB恒星数据，获得新的地面高速多色观测数据，以补充进一步分析的观测数据，并生成扰动大气模型来解释所有观测数据。最后，他们将生成与数据匹配的进化模型，并测试sdB恒星内部的物理特性。亚矮星B （sdB）恒星是水平分支恒星，是低质量白矮星的前身。它们是包裹层剥离的物体，非常蓝色和紫外线明亮，但保留了足够的质量，成为核心氦燃烧恒星。它们的祖先是像我们的太阳一样的恒星，并且是在一些椭圆星系和球状星团中检测到紫外线过量的原因。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，参与拟议的研究计划。PI将致力于增加未被充分代表的少数民族在STEM领域的参与。此外，PI和他的团队（包括本科生）将与国家层面（包括爱荷华州和全球望远镜）和国际层面（包括北爱尔兰，比利时和波兰，以及北欧光学望远镜）的科学家合作。

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).