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

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 UniverseGravitational LensesQuasar Absorption LinesSunyaev-Zeldovich Effect with ALMAGas in Galactic NucleiThe AGN EngineGalaxies in the Local UniverseALMA an the Magellanic CloudsGamma Ray Bursts

Outline

What are galaxy clusters? How do cluster galaxies interact with

their environment?ICM - ISM interactionTidal interactionMergers

How will ALMA allow us to investigate this?

Galaxy Clusters

Image: <http://www.astro.sunysb.edu/fwalter/AST101/galaxies.html>

Galaxy Clusters

Image: <chandra.harvard.edu/photo/2008/a1689>

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 interaction With 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

dlTnI eeSZE dlTnI eerayx2/12

(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, 115-123, 1985 Kitayama, T., et al., Astron. Soc. Japan 56, 17-

28, 2004 Mihos, J. C., Carnegie Observatories

Astrophysics Series, Vol. 3, 2004 Moore, B., Carnegie Observatories

Astrophysics Series, Vol. 3, 2004 SZA at Chicago,

<http://astro.uchicago.edu/sza/primer.html> van Gorkom, J. H., Carnegie Observatories

Astrophysics Series, Vol. 3, 2004 Varela, J., et al., A&A 420, 873-879, 2004