Calendar
2011
September-December
Mon, Dec 5 |
TCC Presentation / Theoretical Astrophysics Seminar Hydrogen and Helium Reionization [abstract] |
Fri, Dec 2 |
Special Astronomy/Physics Joint Colloquium Cosmic Information: IT from BIT, from BITs in IT [abstract] J. Richard Bond, Canadian Institute for Theoretical Astrophysics (CITA) |
Wed, Nov 30 |
TCC Presentation / Cosmos Seminar Giant Gamma-ray Bubbles in the Inner Galaxy: AGN Activity or Bipolar Galactic Wind? [abstract] |
Mon, Nov 21 |
PhD Defense Presentation / Theoretical Astrophysics Seminar Toward an Understanding of the Large Scale Structure of the Universe with Galaxy Surveys [abstract] |
Mon, Nov 14 |
TCC Presentation / Theoretical Astrophysics Seminar The Plasma Physics and Cosmological Implications of TeV Blazars [abstract] Philip Chang, University of Wisconsin, Milwaukee (formerly of CITA-ICAT) |
Wed, Nov 9 |
TCC Presentation / Cosmos Seminar Cosmology without Cosmic Variance [abstract] |
Wed, Nov 2 |
TCC Presentation / Cosmos Seminar The Mass Assembly History of Black Holes in the Universe [abstract] |
Wed, Oct 26 |
TCC Presentation / Cosmos Seminar New Results from the South Pole Telescope [abstract] |
Mon, Oct 24 |
TCC Presentation / Theoretical Astrophysics Seminar From OWLS to FiBY: Numerical Simulations of Galaxy Formation and Evolution [abstract] Claudio Dalla Vecchia, Max Planck Institute for Extraterrestrial Physics |
Mon, Oct 17 |
TCC Presentation / Theoretical Astrophysics Seminar Lyman-alpha in Three Dimensions [abstract] |
Thurs, Sep 29 |
TCC Presentation / Extragalactic Seminar Galaxy Mergers through Cosmic Time [abstract] |
Thurs, Sep 8 |
TCC Presentation / Extragalactic Seminar Galaxy Formation and Evolution through Metals [abstract] Chemical abundances in galaxies provide a fossil record of previous generations of star formation, modulated by galactic-scale gas flows. I will present the latest results from our investigation into the chemical evolution of galaxies, both locally, and at high redshift. Theory predicts that as a merger progresses, galaxy disks become disrupted by tidal effects, causing large radial gas flows toward the central regions where kpc-scale starbursts and AGN may be fueled. Isolated disk galaxies have strong chemical abundance gradients that may become disrupted during a merger. We have conducted the first investigation into chemical abundance gradients across the merger sequence. We show that abundance gradients evolve dramatically with merger progress, providing a smoking gun for galactic-scale gas flows in merging galaxies. Moving out in redshift, I present recent results from our investigation into the cosmic chemical history of galaxies. We have measured the chemical abundances for an unprecedented number of galaxies to z ~ 1, finding little evolution between z ~ 1 and the present day. At higher redshift, we exploit the power of gravitational lensing to investigate the chemical evolution in galaxies between 1 < z < 3. We have measured the first metallicity gradient in a normal spiral galaxy at z ~ 2, showing a steeper gradient than observed in local spiral galaxies. I will discuss the implications of this result and the future of this field with the next generation of telescopes. |
January-May
Mon, May 23 |
TCC Presentation / Special Seminar Galaxy-Galaxy Weak Lensing as a Tool to Correct Finger-of-God Effects in Redshift Power Spectrum Measurements [abstract] |
Thurs, May 12 |
TCC Presentation / Special Seminar Host vs. Subhalo-2D Density Profile Measured from Galaxy-Galaxy Lensing [abstract] |
Fri, May 6 |
TCC Presentation / Special Seminar Velocity Probe on Cosmology [abstract] |
Thurs, May 5 |
TCC Presentation / Extragalactic Seminar The Dark Matter Halo - Galaxy Connection in the Local Universe and Local Group [abstract] |
Thurs, Apr 28 |
TCC Presentation / Extragalactic Seminar Understanding the Global Course of Galaxy Evolution at z < 1 [abstract] |
Fri, Apr 22 |
TCC Presentation / Special Seminar Obscured Quasars at High Redshift [abstract] |
Tue, Apr 12 |
TCC Presentation / Weinberg Theory Seminar Screening Dark Energy [abstract] |
Wed, Mar 30 |
TCC Presentation / Cosmos Seminar The Influence of Structure Formation on the Interpretation of Dark Matter Experiments [abstract] |
Tues, Mar 8 |
TCC Presentation / Astronomy Colloquium DEEP2 and Beyond: Studying Galaxy Evolution and Large-Scale Structure with Deep Surveys [abstract] |
Tue, Feb 15 |
TCC Presentation / Astronomy Colloquium Is Inhomogeneity Important in Cosmology? [abstract] |
Wed, Feb 9 |
TCC Presentation / Cosmos Seminar High Resolution Imaging of the Sunyaev-Zel'dovich Effect in Galaxy Clusters [abstract] |
Wed, Feb 9 |
TCC Presentation / Stellar Seminar Observational Constraints on Dark Matter Heating in White Dwarf Stars [abstract] |
Mon, Jan 31 |
TCC Special Colloquium / Theoretical Astrophysics Seminar Dark Matter [abstract] |
Wed, Jan 26 |
TCC Presentation The Matching of the Cosmic Star Formation Rate and the Cosmic Supernova Rate [abstract] |
Wed, Jan 19 |
TCC / Cosmos Seminar Cosmological Imprints of f(R) Gravity [abstract] |
Tue, Jan 18 |
TCC / Colloquium (Tinsley Scholar) Dust in the Early Universe [abstract] |