Additional publications


X-ray Point Sources in the Field of RCS 0224-0002
0224 Point Sources
Hard (2.0-10.0 keV) X-ray point source regions are overlayed on an adaptively smoothed Chandra flux image of the high redshift (z~0.8) cluster RCS0224-0002. The large circle denotes a radius of R200 (1.14 Mpc). Within that region, six of the hard X-ray point sources are coincident with radio emission. AGN activity peaks at ~0.7 R200 and may inject enough energy into the intracluster medium (ICM) to significantly raise its entropy (Hicks et al. 2007).
  • “Submillimetre Source Counts in the Fields of High-Redshift Galaxy Clusters”, Noble, A.G., Webb, T.M.A, Ellingson, E., Faloon, A.J., Gal, R.R., Gladders, M.D., Hicks, A. K., Hoekstra, H., Hsieh, B.C., Ivison, R.J., Lemaux, B.C., Lubin, L.M., O'Donnell, D.V., Yee, H.K.C., 2011, accepted by Monthly Notices of the Royal Astronomical Society, astro-ph arXiv:1109.5125


  • “The Lx - Tvir Relation in Galaxy Clusters: Effects of Radiative Cooling and AGN Heating”, Mittal, R., Hicks, A. K., Reiprich, T. H., & Jaritz, V., 2011, Astronomy & Astrophysics, 532, 133


  • “Star Formation and UV colors of the Brightest Cluster Galaxies in the Representative XMM-Newton Cluster Structure Survey”, Donahue, M., Bruch, S., Wang, E. Voit, M., Hicks, A., Haarsma, D., Croston, J., Pratt, G., Pierini, D., O'Connell, R., & Böhringer, H., 2010, Astrophysical Journal, 715, 881


  • “Evidence for Line-of-sight Structure in a Comparison of X-ray and Optical Observations of the High-redshift Cluster RCS043938-2904.7”, Cain, B., Gilbank, D., Bautz, M. W., Hicks, A. K., Yee, H. K., Gladders, M., Ellingson, E., Barrientos, L. F., & Garmire, G. P. 2008, Astrophysical Journal, 679, 293



    Dynamical and X-ray Mass Comparisons
    0224 Point Sources
    Dynamical vs. X-ray masses for the CNOC cluster sample. X-ray mass estimates are plotted against the ratio Mdyn/Mx. The dot-dashed line indicates a mass ratio of 1.0. Squares represent cooling core clusters and error bars denote 68% confidence limits. A weighted average gives an overall dynamical to X-ray mass ratio of 0.97 +/- 0.05. (Hicks et al. 2006).
  • “A z=0.9 Supercluster of X-Ray Luminous, Optically-Selected, Massive Galaxy Clusters”, Gilbank, D. G., Yee, H. K. C., Ellingson, E., Hicks, A. K., Gladders, M. D., Barrientos, L. F., and Keeney, B. 2008, Astrophysical Journal Letters, 677, L89


  • “Chandra Observation of the Interaction of the Radio Source and Cooling Core in Abell 2063”, Kanov, K., Sarazin, C. & Hicks, A. K. 2006, Astrophysical Journal, 653, 184


  • “Tracing Star Formation in Cool Core Clusters with GALEX”, Hicks, A. K., Mushotzky M., & Donahue, M. 2009, AIP Conference Series, 1201, 146


  • “Multiwavelength Studies of Cluster Evolution from z~1 to the Present”, Hicks, A. K. 2005, Ph.D. Thesis



    Excess UV Emission in Brightest Cluster Galaxies (BCGs)
    0224 Point Sources
    UV/IR luminosity ratio vs. 2MASS J-band luminosity. All luminosities were calculated in 7 arcsec radius regions and corrected for Galactic extinction. Diamonds indicate cool core cluster BCGs. The line designates the best-fitting relationship between UV and IR luminosity for passively evolving and non-cool core BCGs. The high UV/IR ratio of the cool core BCGs is a strong indication of the existence of hot young stars and thus a direct indication of copious recent star formation. (Hicks & Mushotzky 2005).
  • “Chandra X-ray Observations of Newly Discovered, z~1 Clusters from the Red Sequence Cluster Survey”, Hicks, A. K., Ellingson, E., Bautz, M. W., Yee, H. K. C., Gladders, M., & Garmire, G. 2005, Advances in Space Research, 36, 706

  • “Unresolved X-ray Sources in Intermediate Redshift Cluster Fields”, Fawcett, S., Ellingson, E., & Hicks, A. K. 2004, BAAS, 36, 317


  • “Star Formation Rates in Cooling Flow Clusters”, Mushotzky, R., & Hicks, A. K. 2004, BAAS, 36, 917


  • “First X-ray Results from the Optically Selected Red Sequence Cluster Survey (RCS) at z ˜ 1”, Hicks, A. K., Ellingson, E., Yee, H. K. C., Jeltema, T. E., Bautz, M. W., Gladders, M., & Garmire, G. 2004, in Multiwavelength Cosmology, ed. M. Plionis, Kluwer Academic Publishers


    Radial Temperature Profile of the Cool Core Cluster PKS 0745-191
    PKS.gif
    Chandra radial temperature profile determined by fitting, in XSPEC, single-temperature spectral models to spectra extracted from elliptical annuli selected to include a minimum of 3000 counts in the 0.3-7.0 keV band. Error bars represent 90% confidence limits. The strong central cooling in this cluster is clearly evident (Hicks et al. 2002).
  • “Linear Gas Dynamics in the Expanding Universe”, Gnedin, N. Y., Baker, E. J., Bethell, T. J., Drosback, M. M., Harford, A. G., Hicks, A. K., Jensen, A. G., Keeney, B. A., Kelso, C. M., Neyrinck, M. C., Pollock, S. E., & van Vliet, T. P. 2003, Astrophysical Journal, 583, 525


  • “Chandra X-ray Spectroscopy and Imaging of the Galaxy Cluster PKS 0745-191”, Hicks, A. K., Wise, M. W., Houck, J. C., & Canizares, C. R. 2002, Astrophysical Journal, 580, 763



  • “Mass Distribution in Clusters of Galaxies: X-ray and Lensing Comparisons of 3 Intermediate-Redshift CNOC Clusters”, Hicks, A. K. 2002, BAAS, 34, 706


    Departures from Ionization Equilibrium in Cooling Plasmas
    PKS.gif
    Oxygen ionization fractions for cooling plasmas. Solid lines denote equilibrium ionization fractions; dashed lines show ionization fractions calculated using an isobaric cooling model for a plasma with solar abundance; dotted lines represent fractions derived from isochoric cooling. The progression of colors from right to left corresponds to fully stripped, hydrogen-like, helium-like, and lithium-like fractions. (Hicks & Canizares 2001).
  • “Effects of Departures from Ionization Equilibrium on Cooling Flow X-ray Spectra”, Hicks, A. K., & Canizares, C. R. 2001, Astrophysical Journal, 556, 468


  • “The Effects of High Temperature Annealing on the Surface Reconstruction of Nickel Oxide (1.0)”, Schofield, M. A., Hicks, A. K., & Gajdardziska-Josifovska, M. 1998, in Electron Microscopy 1998, Proc. 14th International Congress on Electron Microscopy, eds. H. A. Calderon Benavides, & M. J. Yacaman, Institute of Physics Publishing, 3, 713



    • Last modified September 26, 2011 at 16:07:38 EDT by akh5h
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