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Kevin Bundy
IPMU / University of Tokyo
Institute for the Physics and Mathematics of the Universe
kevin.bundy _at_ ipmu.jp
5-1-5 Kashiwanoha
Kashiwa, 277-8583, Japan
+81 (0)4-7136-6513
CV in pdf format.
Publication
List: pdf
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Research
Galaxy transformation since z~2
Perhaps the most fundamental and mysterious aspect of galaxy evolution since z~2 is the transformation of star-forming disks into quenched ellipticals, although the rapid growth of early ellipticals presents fascinating new challenges. My work combines space and ground-based observations to constrain the physical mechanisms that may drive this evolution.
Recent and ongoing projects:
• The Rise and Fall of Passive Disks (paper here)
• SFHs of passive disks from deep Keck spectroscopy
• Observational and theoretical constraints on size growth
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The assembly history of galaxies
Dark matter halos assemble hierarchically, with increasingly larger structures built from smaller sub-components. Panoramic dark energy surveys will soon easily detect hierarchical growth in the mass assembly of galaxies for the first time. In the future, the unprecedented breadth of these new surveys will revolutionize galaxy studies by enabling precision tracking of evolutionary flows between various sub-populations characterized by star formation rates, mass, and morphological structure. At the same time, detailed follow-up of focused samples can help reveal the processes that regulate growth.
Recent and ongoing projects:
• The mass assembly histories of BOSS galaxies
• The growth history of BCGs traced by dynamics (VLT spectroscopy in COSMOS)
• Faint-end features in the COSMOS mass function (paper) |
The galaxy merger rate
Galaxy growth, morphological transformations, and even the triggering the AGNs, may all be tied to galaxy mergers. One goal of my work is to improve merger rate measurements and quantify merging as a function of galaxy mass, environment, and the merger mass ratio. Recent progress has seen theoretical and observational estimates broadly converge to the factor of 3 level, but major uncertainties and some tension with models remain.
Recent and ongoing projects:
• A higher merger rate for more massive galaxies (paper)
• Merger rates in galaxy groups (from a spec-z group member survey in COSMOS)
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