Saturday, October 18 |
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8:15 |
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Continental Breakfast ACES Connector Lobby |
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9:00-12:30 |
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Session 3: Formation and Evolution of Galaxies ACES 2.302 Dan Jaffe Session Chair |
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9:00 |
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Populations of Galaxies and their Formation at
Redshifts z < 7 ACES 2.302 Christopher Conselice New ground and space based surveys are allowing us to begin to trace how galaxy properties have changed over cosmic time and how this is related to the general evolution of large scale structure and central black holes. These imaging surveys combined with ground based spectroscopic studies over the last 10 years have further allowed us to determine for the first time how the galaxy population evolved from redshifts z ~ 0 to 7. An important approach to this problem is to understand how measurable properties of galaxies, such as masses, luminosities, sizes and morphologies change from initial galaxy formation until the present day, and how these characteristics are related to modes of formation, such as galaxy merging. Other important aspects for understanding galaxies are their environments and central massive black holes that are likely to have an important, but still unclear, role in galaxy formation. I will discuss these issues and trace out our current physically based models concerning galaxy formation, including problems with the standard model. |
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9:50 |
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The Evolution of Galaxies:
From the Local Group to the Epoch of Reionization ACES 2.302 Fabian Walter Studies of dwarf galaxies and the highest redshift galaxies are imperative to understand galaxy evolution. Dwarf galaxies are believed to be the closest counterparts to the building blocks of massive galaxies in CDM models. Studies of dwarf galaxies have revealed surprising star formation properties and are important to investigate outflow phenomena, potentially leading to the destruction of low-mass dwarfs and the enrichment of the IGM. Dwarf galaxy dynamics constrain the dark matter properties through comparison to CDM predictions. I will link the studies of star formation processes in local dwarf and more massive galaxies to observations at high redshift. Finally, I will discuss the optical and radio properties of the highest redshift quasars discovered by the SDSS which demonstrate that we are probing the end of cosmic reionization. Recent results show that these systems are already enriched with heavy metals and that they are quite massive. I will discuss the current open questions in systems both nearby and at the highest redshifts, which can only be tackled with the next generation of telescopes such as ALMA, JWST, Herschel, and SKA. |
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10:40-11:00 |
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Coffee |
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11:00 |
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Old Galaxies and New Instruments ACES 2.302 Andrew Baker In the next 15 years, advances in our understanding of galaxy evolution will be tightly coupled to advances in ground and space-based instrumentation. I will discuss the developments we can anticipate in tracing how the universe's stellar, black hole, and galaxy masses have managed to build to their present values while preserving a number of tight scaling relations. I will also address some of the challenges observers will face in exploiting the full capabilities of new facilities for galaxy evolution studies. |
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11:50-12:30 |
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Panel Discussion ACES 2.302 UT Panel Member: Sheila Kannappan |
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6:00 |
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Meet the Speakers:
Session for Board of Visitors UT Club, President's Room |
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6:30 |
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Reception UT Club, President's Room |
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7:00 |
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Dinner UT Club, President's Room |
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