Dr. Siobahn M. Morgan

Professor of Astronomy and Department Head
Email Address: 
Siobahn.Morgan@uni.edu
Phone Number: 
319-273-2389
Office: 
Latham 121 and Latham 108
Education: 
Ph. D. Astronomy (1991), University of Washington
M. S. Astronomy (1989), University of Washington
B. S. Astrophysics (1986), University of Minnesota
Research Interests: 

Studies the behavior of pulsating stars found in our galaxy and others and the evolution of stars, particularly massive stars. In addition, she provides on-line databases of pulsating star data for other researchers and WWW-based educational packages for K-12 and higher education astronomy courses (AJJAR Website).

Publications: 
  • Morgan, S. M., 2012, Cepheid Instability Strip "First-time crossers", in Stellar Pulsation: Impact of New Instrumentation and New Insights, Astrophysics and Space Science Proceedings, vol. 31., online paper #42.
  • Morgan, S. M., Wahl, J. N., and Wieckhorst, R. M. 2007, "[Fe/H] relations for c-type RR Lyrae Variables based upon Fourier Coefficients", MNRAS, 374, p. 1421-1426.
  • Morgan, S. M. 2006, "Polaris' Pulsational Mass", Bull. Amer. Astron. Soc., vol. 38, p. 1197.
  • Wahl, J. N. and Morgan, S. M. 2006, "A Pulsational Study of V823 Cas", (with Jennifer Wahl), Bull. Amer. Astron. Soc., vol. 38, p. 1198.
  • Kagy, H. M., and Morgan, S. M. 2006, "Modeling the Stellar Evolution of V725 Sgr", Bull. Amer. Astron. Soc., vol. 38, p. 1197.
  • Morgan, S. M., Wahl, J. N., and Wieckhorst, R. M. 2006, "A method for determining [Fe/H] for c-type RR Lyrae based upon Fourier Coefficients", Memorie della Societa Astronomica Italiana, 77, p. 178.
  • Morgan, S. M. 2003, "WWW Database of Variable Star Fourier Coefficients", Publ. Astronomical Society of the Pacific, 115, p. 1250.