Postdoctoral Research Associate ; Cosmology, Extragalactic Astronomy

Posting Number req
24282

Department Steward Observatory

Department Website Link (Use the "Apply for this Job" box below)..edu

Location Main Campus

Address Tucson, AZ USA

The University of Arizona (UA) Department of Astronomy and Steward Observatory (SO) invite applications for a Postdoctoral Research Associate who will play a leading role in the newly initiated Subaru Hyper Suprime‑Cam (HSC) medium‑band (MB) survey. The HSC/MB filters cover the 400‑1000 nm range with 16 bands (R~20), and will be used to conduct a large 3‑tier survey (wide/deep/ultradeep) over the next several years.

This large international collaboration, including the Euclid and DESI2 teams, is headed by a group in Japan, and UA/SO is a major partner providing the four reddest MB filters.

The successful candidate will work with Dr. Eiichi Egami and is expected to make major contributions to all aspects of the survey. Technical experience in developing an imaging data‑processing pipeline would be highly desirable. We are especially interested in candidates working in the fields of cosmology and/or high‑redshift galaxies who can design and lead exciting science programs in collaboration with the survey team members at UA/SO and NOIRLab.

This position is a year‑to‑year appointment, expected to last for two years initially with the possibility of renewal for a third year. Candidates must have completed all requirements for a Ph.D. before the commencement of the position. The HSC/MB survey is currently expected to start in Spring 2026, so special consideration will be given to those candidates who can start early in 2026.

UA/SO offers a world‑class research environment in astronomy/astrophysics and provides direct access to a variety of powerful observational/computational facilities. The successful candidate will have full access to these facilities as the PI, such as the 2×8.4m Large Binocular Telescope, 6.5m MMT Telescope, and two 6.5m Magellan Telescopes. The University of Arizona is a full member of the SDSS‑V, DESI and LSST collaborations.

The Final date to receive applications is January 3, 2026.

• Planning and execution of the observations.
• Development of the data processing/analysis pipelines.
• Follow‑up observations using ground/space telescopes.
• Publication of scientific results.
• Design and lead exciting science programs in collaboration with the survey team members at UA/SO (Behroozi, Eifler, Fan, Krause, Rozo) and NOIRLab (Dey).
• Supervise/mentor graduate and undergraduate students.
• Take part in outreach activities as needed.

• Must have completed all the requirements for a Ph.D. in Astronomy, Physics, Astrophysics, or related science at the time of hire.

• Ph.D. in Astronomy/Astrophysics or Physics.
• Research experience relevant to cosmology or high‑redshift galaxies.

Curriculum Vitae (CV), Cover Letter, and Three Additional Documents (Past research/technical experience and research plan, List of Publications, Three letters of recommendation) are required. Additional documents must be uploaded via  The Final date to receive applications is January 3, 2026.

Dr. Eiichi Egami, Research Professor, Steward Observatory
egami