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Past Colloquia

Connecting Primordial Physics and Cosmological Observations

Cody Hall

Daniel Green (Stanford)

October 26, 2012
14:00 - 15:00

Inflation provides a compelling explanation of the observed features of the universe on cosmological scales. Yet, given the vast number of models, it may not be clear what precisely these observations tell us about the epoch of inflation. In this colloquium, I will explain how…

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Star Formation in Extreme Environments near Supermassive Black Holes and in Massive Star Clusters

Cody Hall

Jessica Lu (U of Hawaii)

October 19, 2012
14:00 - 15:00

The formation of stars is a fundamental astrophysical process; and yet we still debate whether it varies with environment. Milky Way young star clusters range in mass over four orders of magnitude; but, the best-studied star forming regions, such as Taurus and Orion, represent only…

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The Early Growth of Galaxies

Cody Hall

David Law (Toronto)

October 12, 2012
14:00 - 15:00

In the young universe, galaxies were blobby conglomerations of stars whose irregular structures were products of their dynamically violent environments.  Over time, star formation in these systems declined as the gas fraction dropped, and galaxies evolved into the spiral and elliptical structures with which we…

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Finding Fast

Cody Hall, AB 107

Stefan Osłowski (Swinburne Institute of Technology)

October 11, 2012
14:00 - 15:00

While majority of the enigmatic Fast Radio Bursts have been detected with the single-dish Parkes Observatory radio telescope, new instruments are entering the search.Much progress has been made with interferometric discoveries of FRBs, with the UTMOST project leading the way. On the other hand, the…

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Early Science Results from The Pan-STARRS Wide Field Imaging Survey (Karl W. Kamper Memorial Lecture)

Cody Hall

Nick Kaiser (U of Hawaii)

October 05, 2012
14:00 - 15:00

Pan-STARRS is a distributed aperture wide-field optical/NIR imaging system featuring 1.8m diameter telescopes with 1.4 billion pixel detectors.  The first telescope PS1 has been fully operational and relentlessly surveying the sky for almost 3 years and is delivering median image quality of 1.1″ FWHM.  By…

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Exploring 10 Gyr of galaxy evolution using CANDELS

Cody Hall

Eric Bell (U of Michigan)

September 28, 2012
14:00 - 15:00

Models of galaxy formation in a cosmological context correctly predict, at least qualitatively, the existence of disk-dominated and spheroid-dominated galaxies at the present day.  The same models, including prescriptions for gas cooling, star formation and stellar feedback incorrectly predict that all galaxies should be forming…

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Gas and Star Formation in Nearby Galaxies: New Results From the Herschel Space Observatory

Cody Hall

Christine Wilson (McMaster U)

September 21, 2012
14:00 - 15:00

The availability of new instruments and telescopes is making it possible to study large, well-selected samples of nearby galaxies at millimeter and submillimeter wavelengths. These observations trace the cold, dense gas and dust which is the fuel for star formation. I will discuss new results…

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Exploring the Dark Side of the Universe

Cody Hall

Chris Fassnacht (UC Davis)

September 14, 2012
14:00 - 15:00

In this talk I will show how the powerful combination of gravitational lensing and sensitive, high-resolution imaging can provide direct observational tests of galaxy formation scenarios under the cold dark matter paradigm as well as interesting constraints on cosmology.  In particular, I will discuss the…

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Beyond Bulge-Disk Decomposition: The True Nature of S0 Galaxies

Cody Hall

Michael Merrifield (University of Nottingham)

September 14, 2012
14:00 - 15:00

Perhaps the most basic defining feature of a galaxy is that its starlight is typically divided between disk and spheroidal components.  From the earliest studies, the way the light was split between these components formed a key element of the way in which galaxies were…

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Magnetized Atmospheres of Hot Exoplanets

Cody Hall

Kristen Menou (Columbia U)

September 04, 2012
15:00 - 16:00

Comparative planetology now encompasses a large set of extrasolar planets. Direct observational constraints on the atmospheres of several very hot exoplanets have become available. I will report on various efforts to interpret these observations in terms of atmospheric responses to unusual forcing conditions. In particular,…

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