Shear-Selected Clusters From the Deep Lens Survey III: Masses from Weak Lensing (2009)
Abate, Alexandra, Wittman, D., Margoniner, V. E., Bridle, S. L., Gee, Perry, Tyson, J. Anthony, ...
We present weak lensing mass estimates of seven shear-selected galaxy cluster candidates from the Deep Lens Survey. The clusters were previously identified as mass peaks in convergence maps of 8.6...
Dark Matter Structures In The Deep Lens Survey (2008)
Kubo, Jeffrey M., Khiabanian, Hossein, Dell'Antonio, Ian P., Wittman, David, Tyson, J. Anthony
We present a regularized maximum likelihood weak lensing reconstruction of the Deep Lens Survey F2 field (4 deg^2). High signal-to-noise ratio peaks in our lensing significance map appear to be...
Zhan, Hu, Knox, Lloyd, Tyson, J. Anthony
Baryon acoustic oscillations (BAOs) and weak lensing (WL) are complementary probes of cosmology. We explore the distance and growth factor measurements from photometric BAO and WL techniques and...
Measuring Baryon Acoustic Oscillations with Millions of Supernovae (2008)
Zhan, Hu, Wang, Lifan, Pinto, Philip, Tyson, J. Anthony
Since type Ia Supernovae (SNe) explode in galaxies, they can, in principle, be used as the same tracer of the large-scale structure as their hosts to measure baryon acoustic oscillations (BAOs). To...
J. Anthony Tyson, David M. Wittman, J. Roger, P. Angel
Abstract. Weak gravitational lensing enables direct reconstruction of dark matter maps over cosmologically significant volumes. This research is currently telescopelimited. The Dark Matter Telescope...
Received; accepted Revision 3.2 5/1/97 accepted by ApJ Letters (2007)
Gary Bernstein, J. Anthony Tyson, George Rhee, Hubble Fellow
New HST WFPC2 observations of the lensed double QSO 0957+561 will allow improved constraints on the lens mass distribution and hence will improve the derived value of H 0. We first present improved...
Luminous objects associated with the 7.06 00 separation double quasar Q2345+007 have, until now, escaped detection. In this letter we present the results of the deepest known imaging of the region...
Sehgal, Neelima, Hughes, John P., Wittman, David, Margoniner, Vera, Tyson, J. Anthony, Gee, Perry, ...
We compare X-ray and weak-lensing masses for four galaxy clusters that comprise the top-ranked shear-selected cluster system in the Deep Lens Survey. The weak-lensing observations of this system,...
Precision Studies of Dark Energy with LSST (2006)
Tyson, J. Anthony, Collaboration, For The LSST
Starting around 2013, data from the Large Synoptic Survey Telescope (LSST) will be analyzed for a wide range of phenomena. By separately tracing the development of mass structure and rate of...
SHELS: The Hectospec Lensing Survey (2005)
Geller, Margaret J., Dell'Antonio, Ian P., Kurtz, Michael J., Ramella, Massimo, Fabricant, Daniel G., Caldwell, Nelson, ...
The Smithsonian Hectospec Lensing Survey (SHELS) combines a large deep complete redshift survey with a weak lensing map from the Deep Lens Survey (Wittman et al. 2002; 2005). We use maps of the...
Exploring Large-scale Structure with Billions of Galaxies (2005)
Zhan, Hu, Knox, Lloyd, Tyson, J. Anthony, Margoniner, Vera
We consider cosmological applications of galaxy number density correlations to be inferred from future deep and wide multi-band optical surveys. We mostly focus on very large scales as a probe of...
Wide-field weak lensing by RXJ1347-1145 (2005)
Kling, Thomas P., Dell'Antonio, Ian, Wittman, David, Tyson, J. Anthony
We present an analysis of weak lensing observations for RXJ1347-1145 over a 43' X 43' field taken in B and R filters on the Blanco 4m telescope at CTIO. RXJ1347-1145 is a massive cluster at redshift...
X-Ray Observations of the Most Massive DLS Shear-Selected Galaxy Clusters (2004)
Hughes, John P., Dell'Antonio, Ian, Hennawi, Joseph, Margoniner, Vera, Molnar, Sandor, Norman, Dara, ...
We report on preliminary results of our X-ray survey of the most massive clusters currently identified from the Deep Lens Survey (DLS). The DLS cluster sample is selected based on weak lensing shear,...
Large Synoptic Survey Telescope: Overview (2003)
Tyson, J. Anthony, Collaboration, The LSST
A large wide-field telescope and camera with optical throughput over 200 m^2 deg^2 -- a factor of 50 beyond what we currently have -- would enable the detection of faint moving or bursting optical...
Wittman, David M., Tyson, J. Anthony, Kirkman, David, Dell'Antonio, Ian, Bernstein, Gary
Most of the matter in the universe is not luminous and can be observed directly only through its gravitational effect. An emerging technique called weak gravitational lensing uses background galaxies...
Cosmology at the Millennium (1999)
Turner, Michael S., Tyson, J. Anthony
One hundred years ago we did not know how stars generate energy, the age of the Universe was thought to be only millions of years, and our Milky Way galaxy was the only galaxy known. Today, we know...
Detailed Mass Map of CL0024+1654 from Strong Lensing (1998)
Tyson, J. Anthony, Kochanski, Greg P., Dell'Antonio, Ian P.
We construct a high resolution mass map of the z=0.39 cluster 0024+1654, based on parametric inversion of the associated gravitational lens. The lens creates eight well-resolved sub-images of a...
Tyson, J. Anthony, Fischer, Philippe, Guhathakurta, Puragra, McIlroy, Peter, Wenk, R. A., Huchra, John P., ...
Deep Hubble Space Telescope Wide Field Camera (WFC-1) imaging of a region 3farcm7 east of the V = 13 mag Seyfert galaxy NGC 5548 in the F555W and F785LP bands, and deep ground-based V and I imaging,...
Tyson, J. Anthony, Fischer, Philippe, Guhathakurta, Puragra, McIlroy, Peter, Wenk, R. A., Huchra, John P., ...
Deep Hubble Space Telescope Wide Field Camera (WFC-1) imaging of a region 3farcm7 east of the V = 13 mag Seyfert galaxy NGC 5548 in the F555W and F785LP bands, and deep ground-based V and I imaging,...
Improved Parameters and New Lensed Features for Q0957+561 from WFPC2 Imaging (1997)
Bernstein, Gary, Fischer, Philippe, Tyson, J. Anthony, Rhee, George
New HST WFPC2 observations of the lensed double QSO 0957+561 will allow improved constraints on the lens mass distribution and hence will improve the derived value of H$_0$. We first present improved...
Fischer, Philippe, Tyson, J. Anthony
Galaxy cluster mass distribution are potentially useful probes of $\Omega_0$ and the nature of the dark matter. Large clusters will distort the observed shapes of background galaxies through...
The Mass distribution of the Cluster 0957+561 from Gravitational Lensing (1996)
Fischer, Philippe, Bernstein, Gary, Rhee, George, Tyson, J. Anthony
Multiply gravitationally lensed objects with known time delays can lead to direct determinations of H$_0$ independent of the distance ladder if the mass distribution of the lens is known. Currently,...
Galaxy Dark Matter: Galaxy-Galaxy Lensing in the Hubble Deep Field (1996)
Dell'Antonio, Ian P., Tyson, J. Anthony
In this Letter we present calibrated observations of the average mass of galaxies with 22< I < 25 in the Hubble Deep Field. We measure the mean mass profile using the statistical gravitational lens...
Flickering Faint Galaxies: Few and Far Between (1996)
Kochanski, Greg P., Tyson, J. Anthony, Fischer, Philippe
Optical variability in galaxies at high redshift is a tracer of evolution in AGN activity, and should provide a useful constraint on models of galaxy evolution, AGN structure, and cosmology. We...
Unlensing Multiple Arcs in 0024+1654: Reconstruction of the Source Image (1995)
Colley, Wesley N., Tyson, J. Anthony, Turner, Edwin L.
A unique reconstruction of the image of a high redshift source galaxy responsible for multiple long arcs in the z = 0.4 cluster 0024+1654 is obtained by inverse lensing. Deep B and I imaging with the...
A Catalog of Digital Images of 113 Nearby Galaxies (1995)
Frei, Zsolt, Guhathakurta, Puragra, Gunn, James E., Tyson, J. Anthony
We present a digital catalog of images of 113 galaxies in this paper. These galaxies are all nearby, bright, large and well resolved. All images were recorded with charge coupled devices (CCDs) at...
Detection of Lens Candidates for the Double QSO Q2345+007 (1994)
Fischer, Philippe, Tyson, J. Anthony, Bernstein, Gary M., Guhathakurta, Puragra
Luminous objects associated with the 7.06\arcsec\ separation double quasar Q2345+007 have, until now, escaped detection. In this letter we present the results of the deepest known imaging of the...
Windhorst, Rogier A., Schmidtke, Paul C., Pascarelle, Sebastian M., Gordon, J. M., Griffiths, Richard, Ratnatunga, Kavan U., ...
We present isophotal profiles of six faint field galaxies from some of the first deep images taken for the Hubble Space Telescope (HST) Medium Deep Survey (MDS). These have redshifts in the range...
Windhorst, Rogier A., Schmidtke, Paul C., Pascarelle, Sebastian M., Gordon, J. M., Griffiths, Richard, Ratnatunga, Kavan U., ...
We present isophotal profiles of six faint field galaxies from some of the first deep images taken for the Hubble Space Telescope (HST) Medium Deep Survey (MDS). These have redshifts in the range...
Gary Bernstein, George Rhee, J. Anthony Tyson
Multiply gravitationally lensed objects with known time delays can lead to direct determinations of H 0 independent of the distance ladder if the mass distribution of the lens is known. Currently,...
Radiometer System to Map the Cosmic Background Radiation (1977)
Gorenstein, Marc V., Muller, Richard A., Smoot, George F., Tyson, J. Anthony
Unlensing Multiple Arcs in 0024+1654: Reconstruction of the Source Image
Wesley Colley, J. Anthony Tyson, Edwin L. Turner
A unique reconstruction of the image of a high redshift source galaxy responsible for multiple long arcs in the z = 0.4 cluster 0024+1654 is obtained by inverse lensing. Deep B and I imaging with the...