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Administrative Unit:Astronomy
College/School: College of Letters & Science
Admitting Plans:Ph.D.
Degrees Offered:M.S., Ph.D.
Minors and Certificates:Ph.D. Minor

Faculty: Professors Mathieu (chair), Barger, Bershady, Gallagher, Lazarian, Wilcots, Zweibel; Associate Professors Heinz, Stanimirovic; Assistant Professors D'Onghia, Sheinis, Townsend, Tremonti


The Department of Astronomy offers the doctor of philosophy in astronomy. Although a master's degree is offered, students generally are not admitted for a terminal master's degree.

The department has a long-standing reputation as one of the finest graduate astronomy and astrophysics programs in the United States. The program provides each student with a broad knowledge of modern observational and theoretical astrophysics, while emphasizing the development of independent research skills. Beginning with the first year in the program, graduate students play an active role in the department's research programs and have access to all research facilities. As teaching assistants, they also acquire experience as astronomy educators.

The faculty are engaged in a broad range of observational and theoretical research. Topics of study include dynamical phenomena of massive stars; binary star evolution; dynamics of star clusters and star forming regions; compact objects; the interstellar and intergalactic medium; star formation; plasma astrophysics; computational fluid mechanics; magnetic fields; turbulence; the structure, kinematics, and stellar populations of nearby galaxies; active galactic nuclei; galactic winds and chemical evolution; galaxy clusters; galaxy formation and evolution; the star formation and black hole accretion history of the universe; and the development of innovative astronomical instrumentation. More information is available on the department website.

Research Facilities 

Astronomical observations at UW–Madison trace their origin to the 15-inch refractor of Washburn Observatory, founded on the campus in 1878, and still open for public viewing. Wisconsin subsequently pioneered a multi-wavelength approach to astronomical observation. Faculty, research staff, and students are frequent observers on X-ray, ultraviolet, optical, infrared, radio, and submillimeter telescopes around the globe and in space. The department currently participates in the operation of a number of research-class observing facilities and is actively engaged in the development of cutting-edge instrumentation.

The university is a major partner in the WIYN telescope, an advanced technology 3.5m telescope, at Kitt Peak, Arizona, optimized for wide-field imaging and spectroscopy. The university is also a major partner in the 11m Southern African Large Telescope (SALT), the largest single aperture optical telescope in the Southern Hemisphere. The department is actively involved in ASKAP and MEERKAT, precursor experiments for an array of radio telescopes one square kilometer in size.

The department has a long history of developing astronomical instrumentation for both ground and space-based facilities. Current efforts acenter on a new integral field unit spectrograph for WIYN and a near-infrared arm for the Robert Stobie Spectrograph on SALT. UW scientists are also continuing to develop and operate the Wisconsin H-Alpha Mapper (WHAM), a uniquely powerful instrument dedicated to the study of the warm ionized gas in the Milky Way, and an innovative and highly successful Star Tracker for sounding rocket and balloon-borne experiments. Technical support is provided by in-house electronics and machine shops.

The theory group maintains a variety of facilities to support numerical simulations. The main workhorse is a 72-node, 576-core cluster optimized for tightly coupled problems, such as hydrodynamics and magneto-hydrodynamics. A number of smaller clusters are used for development, analysis and three-dimensional visualization.

Ph.D. Degree 

The goal of the graduate program is to prepare capable and creative astronomers for careers in research and education. The granting of the Ph.D. degree indicates that the recipient has a mastery of the knowledge and techniques of modern astrophysics. A Ph.D. candidate is expected to be both knowledgeable of problems at the frontiers of astrophysical research and able to carry out independent forefront research in a specialized area. Candidates are required to gain experience as teaching assistants and are encouraged to work with a variety of faculty and research staff members during the first two years of study.

Ph.D. Minor 

Graduate students from other programs who wish to minor in astronomy should ask the department to assign them a minor professor. The minimum requirement for a minor is 10 credits from courses at or above the 500 level offered by the Department of Astronomy, to include both Astronomy 500 and Astronomy 700.


To enter as a graduate student, an applicant must have undergraduate preparation that includes at least three years of college physics and mathematics through differential equations. Applicants are judged on the basis of previous academic record, letters of recommendation, personal statement, research experience, and Graduate Record Exam (GRE) scores. Admission is competitive and is for the fall only.

Applicants for admission must submit the following via their online application or mail directly to the department:

  • Official transcripts of all undergraduate work
  • Reasons for graduate study
  • Three letters of recommendation from people well acquainted with past academic work
  • Graduate Record Exam (GRE) scores (general test and subject test in physics)
  • International students must submit scores from the Test of English as a Foreign Language (TOEFL) or the International English Language Testing System (IELTS)

Financial support is provided through university fellowships (incoming graduate students only) or department assistantships. To compete for fellowships awarded by the university, students must submit all application materials (including the GRE scores) to the department office by December 31. Supporting materials must be submitted to the Department of Astronomy. 

For more information: Department of Astronomy, 2532 Sterling Hall, 475 North Charter Street, Madison, WI 53706-1582; 608-890-3775; fax 608-263-6386; gradinq@astro.wisc.edu; www.astro.wisc.edu.