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掌握的sdB恒星数据，获得这些恒星的新的地面高速射电观测数据，以补充观测数据进行进一步分析，并生成扰动大气模型来解释所有观测数据。最后，他们将生成与数据相匹配的进化模型，并测试sdB恒星内的物理特性。亚矮星B（sdB）是水平分支星，是低质量的白色矮星的先驱。它们是非常蓝色和紫外线明亮的天体，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，并且负责在一些椭圆星系和球状星团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与拟议的研究计划。PI将致力于增加代表性不足的少数民族在STEM领域的参与。 此外，PI和他的团队（包括本科生）将与国家级（包括爱荷华州和全球望远镜）和国际级（包括N。爱尔兰、比利时和波兰，以及北欧光学望远镜）。

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).