New: "TKRS Data Products" page now contains links to download all TKRS 1-D spectra by mask number


The Team Keck Treasury Redshift Survey (TKRS) is a project of W.M. Keck Observatory to carry out a deep spectroscopic survey of galaxies within the boundaries of the GOODS-North field. The TKRS will enhance the impact of the data acquired by the GOODS collaboration, (which uses NASA's space-based Great Observatories - Hubble Space Telescope, Spitzer Space Telescope, XMM-Newton and Chandra) by providing researchers with the ability to study large-scale structure, galaxy dynamics, and abundances for this exquisite sample of intermediate- and high-redshift targets. Our survey follows the footsteps of Judy Cohen’s HDF Redshift Survey with LRIS ( 1996, 2000) and is complemented by two similar projects: Len Cowie’s DEIMOS survey of an additional 600 objects in the GOODS-North region and a sample of fainter targets observed by the Gemini North + GMOS group. In the spirit of a “Treasury” survey, TKRS aims at providing the astronomical community with a set of data free of proprietary period and a public database containing the redshifts - accurate to 100 km/sec, for 1536 objects, down to R= 24.3 magnitude. A press release was issued in December 2003 describing the TKRS, and a paper has been submitted to the Astronomical Journal. The redshift catalog, as well as raw and fully reduced 1-D spectra, was made available to the community via the TKRS web site ( in January 2004. 2-D spectra will be made available at a future date.

Team Keck: Greg Wirth, Paola Amico, Antonin Bouchez, Randy Campbell, Fred Chaffee, Al Conrad, Bob Goodrich, Grant Hill, Marc Kassis, Shui Kwok, David Le Mignant, Jim Lyke, Jeff Mader, Hien Tran. 

Collaborators: Christopher Willmer, David Koo, Sandra M. Faber (UCO/Lick); Marc Davis, Alison L. Coil, Michael Cooper, Jeffrey A. Newman (UC Berkeley); Len Cowie, Esther Hu, Peter Capak, Antionette Songaila and Amy Barger (UH/IfA).

Team Keck will be releasing the entire database, including 1-D and 2-D spectra, in time for the January AAS meeting in Atlanta. Some of the scientific uses for the data include: calibrating and comparing photometric-redshift surveys of the GOODS-North field, comparing the numbers of type 1 and type 2 AGN, measuring the luminosity function of galaxies, measuring velocity dispersions, and searching for large-scale structures in the universe. Team Keck will also participate in CATS (the CfAO Treasury Survey) in the GOODS-North field, using AO to produce detailed near-IR images.

The project was funded by a grant to WMKO by the National Science Foundation’s Small Grant for Exploratory Research program. This project has also greatly benefited from our collaboration with the DEEP Team, who helped us with mask design and data reduction and also donated a significant amount of their observing time to complete our masks.
The data presented on this web site are a combined set of those data obtained by both Team Keck and our collaborators at the University of Hawaii/Institute for Astronomy.
We are also grateful to the SDSS team for providing us with accurate astrometry of the GOODS-North field.

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Last modified: Jan. 20, 2004. Mailto: zee at keck dot hawaii dot edu