RUI: Stellar Mass Content of Galaxy Dark Matter Halos

恒星似乎不愿意在星系中形成暗物质晕。 这是一个谜。 为了帮助解决这个问题，研究小组将研究大量暗物质晕中的恒星。 他们将使用光学和近红外数据来测量星系中恒星的质量，以及星系群和星系团之间的质量。 这些测量结果将被用来检验那些声称已经解决了这个难题的理论。 本科生将大量参与研究。 PI和他的本科生将为公众举办实践活动。 他们将在纽约奥尔巴尼为代表性不足的群体提供服务的学校宣传这些活动。 PI将为本科生、高中生和教师开发学习活动。该团队将研究暗物质晕中恒星发出的光，星系、星系群和星系团的尺度。 他们的目标是（1）测量恒星质量和晕质量之间的关系;（2）限制大质量暗物质晕中的总重子分数。

Stars seem reluctant to form in galaxy dark matter halos. This is a puzzle. To help solve it, the team will study the stars in a vast array of dark matter halos. They will use optical and near-infrared data to measure the mass of the stars in galaxies and also between the galaxies in groups and clusters. The measurements will be used to test theories that claim to have solved the puzzle. Undergraduates will be heavily involved in the research. The PI and his undergraduates will host hands-on events for the public. They will advertise the events at schools in Albany, New York that serve underrepresented groups. The PI will develop learning activities for undergraduates and high-school students and teachers.The team will study the light from stars in dark matter halos, on the scales of galaxies, groups of galaxies, and clusters of galaxies. Their goals are to (1) measure the relationship between stellar masses and halo masses; and (2) constrain the total baryon fraction in massive dark matter halos.