Philip A. Ianna, Professor Emeritus

Local homepage Email: pai@virginia.edu Phone: (434) 924-4898 Fax: (434) 924-3104 Office: 243 Astronomy Building Address:    Department of Astronomy    PO Box 400325    Charlottesville, VA 22904-4325

Curriculum Vitae B.A., Swarthmore College, 1960 M.A., Swarthmore College, 1962 Ph.D., Ohio State University, 1968 Presently: Professor, University of Virginia Adjunct Faculty Member, Center for Inquiry Institute, Buffalo NY, 1990-present Research Interests Parallaxes White dwarfs Ba stars Recent Research Assistants Former: Ricky Patterson (M.A. 1989, Postdoc, 1995-1997) Jon Whitney (M.A., 1992) Ramon Williamson (M.A., 1999) Jennifer Bartlett (Ph.D., 2007) Michael Begam (Resident Observer at Mt. Stromlo) Courses Recently Taught Astronomy 124 Astronomy 313 Astronomy 347 Astronomy 353 Publications Link to publications

My primary research interests have been in astrometry, in particular what may be learned from the accurate measurement of stellar positions and their changes with time. The observations are direct images of the particular star field. They lead to the determination of fundamental physical parameters, such as the luminosity and the mass, by way of trigonometric parallax (distance) measurement and binary orbital analyses for relatively nearby stars and substellar objects. With renewed interest by NASA and NSF in the nearby stars in support of future space missions, we have expanded this work to include observations from Chile, an excellent site.

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