Ron Wilhelm

rjwi222's picture
  • Associate Professor
  • Director of Undergraduate Studies
  • Physics & Astronomy
  • Astronomy & Astrophysics
Blazer Dining, 343 Martin Luther King Blvd., BL331
Research Interests:

B.S. Physics (1985) Bowling Green State University; M.S. Physics (1989) Bowling Green State University; PhD. Physics (1995) Michigan State University


I study ancient stellar populations in our Galaxy, the Milky Way.  I am an observational astronomer who uses photometric and spectroscopic observations to determine basic properties of stars.  This includes the surface temperature, surface gravity, chemical abundance, radial velocity and distances to various populations of stars.  I have collaborated on various projects including the SEGUE Stellar Parameter Pipeline, a program to determine distances to high velocity clouds, and the Century Stellar Survey.  This research has helped to determine properties of stellar streams (from dwarf galaxy merger events), and the properties of the Galacitic halo and thick disk.

Selected Publications: 

Follow this link to see my various publications:

Astronomical Publications


PubMed Publications*: 
  • Carollo, D.;Beers, TC ;Lee, YS ;Chiba, M.;Norris, JE ;Wilhelm, R.;Sivarani, T.;Marsteller, B.;Munn, JA ;Bailer-Jones, CA ;Fiorentin, PR ;York, DG "Two stellar components in the halo of the Milky Way." Nature 450, 7172 (2007): 1020-5. Details.
* Publications are automatically pulled from based on a user-specific query. Results may include incorrect citations. See: Tutorial on improving PubMed results.
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