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Faculty and Staff Research

spectrum  Professor R. Earle Luck‘s research interests include studies of stellar and galactic chemical evolution, stellar abundance analysis, isotopic abundance ratios, spectrum synthesis techniques, and spectroscopic data reduction techniques. Recent projects include studies of local dwarfs and giants. Details on the dwarf and giant spectra along with references to the published studies can be found at the FGK Stars Spectral Library.  Also
contained in the Library are the Cepheid and supergiant spectra used in studies of the distribution of metals in the disk of the Milky Way.
ngc628_final Professor Stacy McGaugh studies galaxies, cosmology, and the missing mass problem. He uses ground-based and space telescopes to study galaxies in optical, infrared, and radio wavelengths. He is interested in galaxy scaling relations (e.g., the baryonic Tully-Fisher relation; the mass discrepancy-acceleration relation) and in a class of objects known as low surface brightness galaxies. These diffuse objects tell us a great deal about galaxy formation and evolution.
VirgoICL  Professor Chris Mihos uses observational data from ground- and space-based telescopes combined with state-of-the-art computer modeling to study the evolution of galaxies and galaxy clusters. Using Case’s wide-field Burrell Schmidt telescope, Mihos is surveying the nearby Virgo cluster of galaxies to find the ghostly intracluster light that traces the history of galaxy collisions inside the cluster. Computer simulations of galaxy clusters are being used to probe how these intracluster stars are torn out of cluster galaxies, while other simulations have focused on mergers of galaxies, the triggering of starburst galaxies and quasars, and the transformation of spiral galaxies into ellipticals. This merger-driven evolution of galaxies is also the focus of studies using the Hubble and Spitzer Space Telescopes which provide a detailed view of colliding galaxies in the local universe.
and2disk  Professor Heather Morrison is an observational astronomer whose main research interest is the formation of galaxies. She uses observations of old stars in our own and nearby galaxies to reconstruct their history. A major project is the SDSS-II SEGUE survey for stars in the outer halo of the Milky Way, which is mapping the outer parts of the Galaxy in much more detail than previosly possible, and detecting streams of stars which have been pulled off by tidal forces as small satellites are captured by the Milky Way. She also works on the formation and evolution of the Milky Way’s nearest large neighbor, the Andromeda galaxy.
 SDSS-galaxies Professor Idit Zehavi‘s research interests include cosmology and the large-scale structure of the universe, galaxy formation and evolution, and cosmic flows. She is an astrophysicist working at the interface of theory and observations, performing phenomenological studies using large surveys of galaxies. In recent years she has been extensively involved with the Sloan Digital Sky Survey (SDSS), an ambitious ongoing survey aimed at mapping a quarter of the sky. She is primarily focused on studying the clustering properties of galaxies and their implications on cosmological models, galaxy formation, and the relationship between galaxies and dark matter.
schmidt-rehab Observatory Manager Paul Harding combines an interest in observations which constrain galaxy formation via the stellar fossil record with a broad background in telescope, instrument, and detector design. Students can gain hands-on experience in projects as diverse as the recent optimization of the Burrell Schmidt telescopes optical assembly, or working on the controller electronics for the Schmidt’s wide field camera.
CWRU_Research_MSP Postdoctoral Scholar Dr. Marcel S. Pawlowski is interested in galaxy formation, evolution and dynamics, with an emphasis on nearby dwarf galaxies and the history of Local Group. He works on the phase-space distribution of satellite and dwarf galaxies, in particular the VPOS (the Vast Polar Structure of the Milky Way). By comparing the observed satellite planes with sub-halos in cosmological simulations he has shown that they are one of the most serious current small-scale problems of ΛCDM. Another aspect of his research are numerical models of galaxy collisions to study the formation and dynamics of tidal dwarf galaxies, and the comparison of dark-matter- and modified-gravity-based solutions to the missing mass problem.