The University of California, Davis (UC Davis) received a $112,115 Project Grant award from the National Science Foundation's (NSF) Mathematical and Physical Sciences (CFDA 47.049) program to conduct collaborative research on determining a more precise and accurate measurement of the Hubble constant. The project aims to resolve the "Hubble tension" - the statistically significant difference between Hubble constant values derived from local universe observations versus extrapolations from early universe data. To address this, the UC Davis team will obtain spatially resolved stellar kinematics data from a sample of 12 time-delay gravitational lenses, and combine this with information from two additional non-time delay lens samples. By leveraging multiple observational strategies, instruments, and modeling approaches, the researchers seek to improve the reliability and reduce systematics in measuring the Hubble constant. This 3-year project will also involve public outreach efforts to illustrate the scientific method and promote quantitative thinking on environmental issues.
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