NOAO >   Observing Info >   Approved Programs >   1999B-0018

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Proposal Information for 1999B-0018


PI: J. Anthony Tyson, Bell Labs, Lucent Technologies, tyson@physics.bell-labs.com
Address: 700 Mountain Avenue, Murray Hill, NJ 07974, USA

CoI: Gary Bernstein, Astronomy Dept., U. Michigan
CoI: Ian Dell'Antonio, NOAO/KPNO
CoI: David Wittman, Bell Labs, Lucent Technologies
CoI: David Kirkman, Bell Labs, Lucent Technologies
CoI: Greg Kochanski, Bell Labs, Lucent Technologies
CoI: Tod Lauer, NOAO/KPNO
CoI: T. Broadhurst, UCB
CoI: R. Cen, Princeton
CoI: J. Cohen, Caltech
CoI: A. Gonzalez, UCSC
CoI: R. Guhathakurta, UCSC
CoI: W. Hu, IAS
CoI: N. Kaiser, UH
CoI: J. Miralda-Escude, U. Penn
CoI: R. Schommer, NOAO
CoI: D. Spergel, Princeton
CoI: G. Squires, Caltech
CoI: C. Stubbs, University of Washington

Title: Deep Lens Survey

Abstract: This Survey will produce the first unbiased maps of the large-scale structure of the mass distribution beyond the local Universe. We will obtain very deep multicolor imaging of seven 2^\circ fields, which we will use to measure the shear of distant galaxies induced by the mass of foreground structures. These weak-lensing observations are sensitive to all forms of clumped mass and will yield unbiased mass maps with resolution of 1\arcmin in the plane of the sky (~ 120 h^-1 kpc at z=0.2), in multiple redshift ranges (with (Delta) z=0.5 z). These maps will measure for the first time the change in large scale structure from z=1 to the present epoch, and test the current theories of structure formation, which predict that mass in the low-redshift Universe has a particular filamentary/sheetlike structure. These unique observations will constrain the clustering properties of matter, most notably \Omega_\rm matter and \Omega_(Lambda), and, when compared with the results from microwave background anisotropy missions, will test the basic theory of structure formation via gravitational instability.


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