Kevin Bundy  

Kevin Bundy
Kavli IPMU / University of Tokyo
Kavli Institute for the Physics and Mathematics of the Universe
kevin.bundy _at_
5-1-5 Kashiwanoha
Kashiwa, 277-8583, Japan
+81 (0)4-7136-6513

CV in pdf format.

Publication List: pdf


DEEP2 EGS Access DEEP2 Fall Access GOODS Morphology Catalogs



MaNGA: Mapping Nearby Galaxies at APO
I am the Principal Investigator of a 4th-generation Sloan Digital Sky Survey (SDSS-IV) program called MaNGA (Mapping Nearby Galaxies at Apache Point Observatory). After beginning survey operations on July 1st, 2014, MaNGA is obtaining resolved spectroscopy for 10,000 nearby galaxies over 6 years, nearly 140 galaxies per month. This unprecedented survey will shed new light on the life history of galaxies, providing clues about their early formation, maps characterizing their ongoing growth, and insight into the processes that eventually cause their star formation to "die out." MaNGA is a roughly $10M project with nearly 300 team members spanning more than 60 institutions across the world.

Links to further information:
  • MaNGA project overview: Bundy et al. 2014
  • MaNGA instrument: Drory et al. 2014
  • MaNGA's public website


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

Galaxy transofmration
Read my article for the Keck Observatory Cosmic Matters newsletter:
  Weight-Watchers Guide to the Universe: Obese Galaxies Aren't Dieting

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)



A Travel Tip: My latest work has greatly benefited from the serenity of the French countryside. If you're ever in France, check out Cherry Cottage, a guesthouse vacation rental (or "Gite" in French) that's close to my heart.
Last Modified: September 21, 2014