Kelley Liebst AST 591 School of Earth and Space Exploration Arizona State University

ALMA Design Reference Plan  Galaxies and Cosmology  Star and Planet Formation  Stars and Their Evolution  Solar System  Mm VLBI

ALMA Design Reference Plan  Galaxies and Cosmology The High-Redshift Universe Gravitational Lenses Quasar Absorption Lines Sunyaev-Zeldovich Effect with ALMA Gas in Galactic Nuclei The AGN Engine Galaxies in the Local Universe ALMA an the Magellanic Clouds Gamma Ray Bursts

Outline  What are galaxy clusters?  How do cluster galaxies interact with their environment? ICM - ISM interaction Tidal interaction Mergers  How will ALMA allow us to investigate this?

Galaxy Clusters Image:

Galaxy Clusters Image:

Galaxy Clusters Image: Icke, 2004

ICM – ISM Interaction Image: van Gorkom, 2004

ICM – ISM Interaction Image: van Gorkom, 2004

ICM – ISM Interaction Image: van Gorkom, 2004

ICM – ISM Interaction Image: van Gorkom, 2004

ICM – ISM Interaction Image: Moore, 2004

Tidal Interactions  Tidal perturbation parameter (Varela, 2004)

Tidal Interactions Image: Icke, 1985

Mergers  It’s time for Youtube!

Mergers Without global tidal interactionWith global tidal interaction Images: Mihos, 2004

Galaxy Clusters with ALMA  Galaxies and Cosmology Sunyaev-Zeldovich Effect with ALMA ○ Imaging galaxy cluster mergers via the Sunyaev-Zeldovich effect ○ Sunyaev-Zeldovich Effect of Galaxy Clusters at High Redshift

Galaxy Clusters with ALMA  Sunyaev-Zeldovich Effect = the inverse Compton scattering of the cosmic microwave background by hot elections (Kitayama et al., 2004) Images: SZA at Chicago

Galaxy Clusters with ALMA  ALMA provides good resolution at wavelengths relevant to SZE (Kitayama et al., 2004)

Galaxy Clusters with ALMA Image: Kitayama et al., 2004

Conclutions  Galaxies interact with each other and the ICM in clusters through ram- pressure stripping of the ISM, tidal interactions with other galaxies, and mergers with other galaxies  ALMA can probe the history of interactions in a cluster through the Sunyaev-Zuldovich Effect

References  Icke, V., A&A 144, , 1985  Kitayama, T., et al., Astron. Soc. Japan 56, , 2004  Mihos, J. C., Carnegie Observatories Astrophysics Series, Vol. 3, 2004  Moore, B., Carnegie Observatories Astrophysics Series, Vol. 3, 2004  SZA at Chicago,  van Gorkom, J. H., Carnegie Observatories Astrophysics Series, Vol. 3, 2004  Varela, J., et al., A&A 420, , 2004