Space Telescope Science Institute

Postdoctoral Researcher in the Milky Way Halo Research Group

Milky Way Halo Research Group

The Space Telescope Science Institute (STScI) is the operational home of the Hubble Space Telescope, the new James Webb Space Telescope, and the future Nancy Grace Roman Space Telescope, along with ever-growing data archives and public outreach. Our world-class astronomical research center is based on the Johns Hopkins University Homewood campus in Baltimore, MD. This position can support hybrid work. Candidates must reside in or be willing to relocate to our local market.

STScI is seeking to hire a postdoctoral researcher to work with Dr. Andrew Fox, Dr. Jason Tumlinson, and the Milky Way Halo research group. The postdoc will join an interactive and supportive team devoted to understanding the diffuse gas in the Milky Way, Local Group, and beyond.

The postdoc’s primary task will be to lead the analysis on a Cycle 30 HST program on the circumgalactic medium (CGM) of the Large Magellanic Cloud (LMC). This project will use UV spectra from the Cosmic Origins Spectrograph (COS) on the Hubble Space Telescope and supporting data from ground-based telescopes. The goals are to explore the origin and fate of the cool gas in the LMC CGM. The analysis will involve the measurement, modeling, visualization, and interpretation of COS observations. The postdoc will also have the opportunity to become involved in other CGM-related research projects with other members of our group. Part of the succesful applicant’s time will be available for independent research on existing and new projects.

The Milky Way Halo research group ( holds weekly meetings, offers regular travel opportunities, and values collaborative learning. We are part of the larger Low Density Universe group at STScI and Johns Hopkins University (JHU), an extended network of over 40 observers and theorists studying cosmic gas and dust.

STScI offers a dynamic postdoc environment, with an active program of science talks and journal clubs, a postdoc mentoring program, career development opportunties, and a prime location on the JHU campus. The recent launch and commissioning of the James Webb Space Telescope makes this an exciting time to come to Baltimore. STScI offers an excellent benefit package, competitive salaries, and a stimulating work environment. STScI’s postdoctoral pay scale is commensurate to the year of PhD.

The nominal start date is September 2023 or earlier upon mutual agreement. Funding is available for two years, with the possibilty of extension depending on performance and availabilty of funds. Any questions about the position should be directed to Andrew Fox ( and Jason Tumlinson (

Candidates must have a PhD in astronomy, physics, or planetary science at the time of starting the position. Experience with spectroscopy or ISM/CGM research would be beneficial but is not essential. We encourage applications from candidates with observational, theoretical, or simulational backgrounds. We value communication, teamwork, reliability, and inter-personal skills.

The following materials will be requested in PDF format: a cover letter, curriculum vitae, list of publications, and a 2-3 page statement of research interests and relevant technical expertise. We also ask for the names and contact information of three people who may be contacted for letters of reference. Applications received by December 30, 2022 will receive full consideration.

Please ONLY submit your application through this link:

STScI sees the diversity of our staff as a strategic priority in our desire to create a first-rate scientific community. We reflect that deep commitment in strongly encouraging women, minorities, veterans and disabled individuals to apply.

As an Equal Opportunity and Affirmative Action Employer, STScI does not discriminate because of race, sex, color, age, religion, national origin, sexual orientation, lawful political affiliations, veteran status, or mental or physical handicap. Veterans, disabled or wounded warriors needing assistance with the employment process can contact us at

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Last updated: 2022-10-14