Lee A. DuBridge Professor of Astronomy
Pasadena, CA 91125
Current Research Projects
- Our over-arching interest is the connection between galaxy formation
and the development of structure in the universe. We use the W.M. Keck Observatory
(2 10m optical/IR telescopes) and the Palomar Observatory (200-inch telescope) as
primary tools for most of our work, supplemented using data from Hubble, Spitzer,
and Chandra space telescopes, among others.
- A large fraction of our work involves large spectroscopic surveys of star-forming
galaxies and AGN in prescribed redshift ranges (z~1, z~2, and z~3). These surveys converge
rapidly on samples that are uniform and large enough to reach firm conclusions about
large-scale distribution, population demographics, and other statistics necessary
to place the galaxies into a cosmological context.
- Some current projects:
- Large surveys of star-forming galaxies at z~2-3 (the most exciting time in the history of the
universe!), primarily using the UV/blue-optimized
LRIS-B Spectrograph at Keck.
- Detailed spectral analysis of star-forming galaxies at z~2-4: superwind
kinematics, chemical abundances, etc.
- Observations of the kinematics of high redshift galaxies at the difffraction limit of a 10m
telescope using the new Laser
Guide Star Adaptive Optics system at the Keck Observatory and the OSIRIS integral
- Comparison of the galaxy distribution and the properties of the diffuse
intergalactic medium in the same volumes at z~2-3.5; this project combines the
capabilities of mapping the galaxy distribution at the same redshifts that
the Lyman alpha forest can be studied in great detail using spectra obtained
using the High Resolution Spectrometer (HIRES) and ESI at Keck.
- Multi-wavelength studies (near-IR, mid-IR, X-ray, UV/optical) of star forming
galaxies at high redshift, including planned and recent observations using the
Spitzer Space Telescope.
- MOSFIRE : Multi-object Spectrometer
for Infrared Exploration, an ambitious new near-IR imaging multiobject spectrograph and imager
being built for the Keck Observatory, as a collaboration
between Caltech, UCLA, UCSC, and WMKO. I am co-PI and Project Scientist. It is being integrated and
tested in the highbay lab at Caltech, and is expected to see first light in Hawaii in the first
quarter of 2010. A paper describing MOSFIRE was presented at the 2008 SPIE meeting in Marseille:
MOSFIRE SPIE paper .
Some recent papers from our "group"...
Vitae (PDF format)
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Last modified : 21 April 2009