G. K. Squires

Serendipitous Discovery of an Overdensity of Lyα Emitters at z ~ 4.8 in the CL1604 Supercluster Field (2009)

Lemaux, B. C., Lubin, L. M., Sawicki, M., Martin, C., Lagattuta, D. J., Gal, R. R., ...

We present results of a spectroscopic search for Lyα emitters (LAEs) in the Cl1604 supercluster field using the extensive spectroscopic Keck/DEep Imaging Multi-Object Spectrograph database taken as...

The Observations of Redshift Evolution in Large-Scale Environments (ORELSE) Survey. I. The Survey Design and First Results on CL 0023+0423 at z = 0.84 and RX J1821.6+6827 at z = 0.82 (2009)

Lubin, L. M., Gal, R. R., Lemaux, B. C., Kocevski, D. D., Squires, G. K.

We present the Observations of Redshift Evolution in Large-Scale Environments (ORELSE) Survey, a systematic search for structure on scales greater than 10 h^(–1)_70 Mpc around 20 well-known...

Spitzer 24micron observations of optical/near-IR selected extremely red galaxies : evidence for assembly of massive galaxies at z ~ 1 - 2? (2009)

Yan, Lin, Choi, Philip I., Fadda, D., Marleau, F.R., Soifer, B.T., Im, M., ...

We carried out the direct measurement of the fraction of dusty sources in a sample of extremely red galaxies with (R-Ks) ≥ 5.3 mag and Ks

The Observations of Redshift Evolution in Large Scale Environments (ORELSE) Survey : I. The Survey Design and First Results on Cl 0023+0423 at z = 0.84 and RX J1821.6+6827 at z = 0.82 (2008)

Lubin, L. M., Gal, R. R., Lemaux, B. C., Kocevski, D. D., Squires, G. K.

We present the Observations of Redshift Evolution in Large Scale Environments (ORELSE) survey, a systematic search for structure on scales greater than 10 Mpc around 20 well-known clusters at 0.6 < z...

The Complex Structure of the Cl 1604 Supercluster at z ~ 0.9 (2008)

Gal, R. R., Lemaux, B. C., Lubin, L. M., Kocevski, D., Squires, G. K.

The Cl 1604 supercluster at z = 0.9 is one of a small handful of such structures discovered in the high-redshift universe and is the first target observed as part of the Observations of Redshift...

Spitzer 24 micron observations of optical/near-infrared–selected extremely red galaxies : evidence for assembly of massive galaxies at Z ~1–2? (2008)

Yan, Lin, Choi, Philip I., Fadda, D., Marleau, F. R., Soifer, B. T., Im, M., ...

We carried out direct measurement of the fraction of dusty sources in a sample of extremely red galaxies with (R - Ks) ≥ 5:3 mag and Ks < 20:2 mag, using 24 µm data from the Spitzer Space...

The Complex Structure of the Cl 1604 Supercluster at z~0.9 (2008)

Gal, R. R., Lemaux, B. C., Lubin, L. M., Kocevski, D., Squires, G. K.

The Cl1604 supercluster at z=0.9 is one of a small handful of such structures discovered in the high redshift universe, and is the first target observed as part of the Observations of Redshift...

The Gravitational Lens-Galaxy Group Connection. II. Groups Associated with B2319+051 and B1600+434 (2007)

Auger, M. W., Fassnacht, C. D., Abrahamse, A. L., Lubin, L. M., Squires, G. K.

We report on the results of a spectroscopic survey of the environments of the gravitational lens systems CLASS B1600+434 (z_l = 0.41, z_s = 1.59) and CLASS B2319+051 (z_l = 0.62). The B1600+434...

The Spitzer Space Telescope Extragalactic First Look Survey: 24 μm Data Reduction, Catalog, and Source Identification (2006)

Fadda, Dario, Marleau, Francine R., Storrie-Lombardi, Lisa J., Makozov, David, Frayer, David T., Appleton, P. N., ...

We present the reduction of the 24 μm data obtained during the first cosmological survey performed by the Spitzer Space Telescope. Images of a region of sky at moderately high Galactic latitude (l =...

The Spitzer Space Telescope Extra-Galactic First Look Survey: 24 micron data reduction, catalog, and source identification (2006)

Fadda, Dario, Marleau, F. R., Storrie-Lombardi, L. J., Makovoz, D., Frayer, D. T., Appleton, P. N., ...

We present the reduction of the 24 micron data obtained during the first cosmological survey performed by the Spitzer Space Telescope (First Look Survey, FLS). The survey consists of a shallow...

The Gravitational Lens -- Galaxy Group Connection. II. Groups Associated with B2319+051 and B1600+434 (2006)

Auger, M. W., Fassnacht, C. D., Abrahamse, A. L., Lubin, L. M., Squires, G. K.

We report on the results of a spectroscopic survey of the environments of the gravitational lens systems CLASS B1600+434 (z_l = 0.41, z_s = 1.59) and CLASS B2319+051 (z_l = 0.62). The B1600+434...

Mass Along the Line of Sight to the Gravitational Lens B1608+656: Galaxy Groups and Implications for H_0 (2005)

Fassnacht, C. D., Gal, R. R., Lubin, L. M., McKean, J. P., Squires, G. K., Readhead, A. C. S.

We report the discovery of four groups of galaxies along the line of sight to the B1608+656 gravitational lens system. One group is at the redshift of the primary lensing galaxy (z = 0.631) and...

Spitzer 70 and 160-micron Observations of the Extragalactic First Look Survey (2005)

Frayer, D. T., Fadda, D., Yan, L., Marleau, F. R., Choi, P. I., Helou, G., ...

We present Spitzer 70um and 160um observations of the Spitzer extragalactic First Look Survey (xFLS). The data reduction techniques and the methods for producing co-added mosaics and source catalogs...

The Infrared Array Camera component of the Spitzer Space Telescope Extragalactic First Look Survey (2005)

Lacy, M., Wilson, G., Masci, F., Storrie-Lombardi, L. J., Appleton, P. N., Armus, L., ...

We present Infrared Array Camera (IRAC) data and source catalogs from the Spitzer Space Telescope Extragalactic First Look Survey. The data were taken in four broad bands centered at nominal...

Closing in on a Short-Hard Burst Progenitor: Constraints from Early-Time Optical Imaging and Spectroscopy of a Possible Host Galaxy of GRB 050509b (2005)

Bloom, J. S., Prochaska, J. X., Pooley, D., Blake, C. H., Foley, R. J., Jha, S., ...

The localization of the short-duration, hard-spectrum GRB 050509b was a watershed event. Thanks to the nearly immediate relay of the GRB position by Swift, we began imaging the GRB field 8 minutes...

Pushing the Boundaries of the Cl 1604 Supercluster at z~0.9 (2004)

Gal, R. R., Lubin, L. M., Squires, G. K.

The Cl 1604 supercluster at z~0.9 is known to contain at least four distinct member clusters, separated in both projection and redshift. In this paper we present deep, multicolor wide-field imaging...

Weak Lensing Detection of Cl 1604+4304 at z = 0.90 (2004)

Margoniner, V. E., Lubin, L. M., Wittman, D. M., Squires, G. K.

We present a weak lensing analysis of the high-redshift cluster Cl 1604+4304. At z=0.90, this is the highest-redshift cluster yet detected with weak lensing. It is also one of a sample of...

Infrared Properties of Radio-Selected Submillimeter Galaxies in the Spitzer First Look Survey Verification Field (2004)

Frayer, D. T., Chapman, S. C., Yan, L., Armus, L., Helou, G., Fadda, D., ...

We report on submillimeter and infrared observations of 28 radio-selected galaxies in the Spitzer First Look Survey Verification field (FLSV). All of the radio-selected galaxies that show evidence...

Spitzer 24micron Observations of Optical/Near-IR Selected Extremely Red Galaxies: Evidence for Assembly of Massive Galaxies at z~1-2 ? (2004)

Yan, Lin, Choi, P., Fadda, D., Marleau, F. R., Soifer, B. T., Im, M., ...

We carried out the direct measurement of the fraction of dusty sources in a sample of extremely red galaxies with (R - Ks) > 5.3mag and Ks < 20.2mag, using 24um data from the Spitzer Space Telescope....

Characterization of Extragalactic 24micron Sources in the Spitzer First Look Survey (2004)

Yan, Lin, Helou, G., Fadda, D., Marleau, F. R., Lacy, M., Wilson, G., ...

In this Letter, we present the initial characterization of extragalactic 24um sources in the Spitzer First Look Survey (FLS) by examining their counterparts at 8um and R-band. The color-color diagram...

Massive star formation in a gravitationally-lensed HII-galaxy at z=3.357 (2003)

Fosbury, R. A. E., Villar-Martin, M., Lombardi, M., Rosati, P., Stern, D., Hook, R. N., ...

The Lynx arc, with a redshift of 3.357, was discovered during spectroscopic follow-up of the z=0.570 cluster RX J0848+4456 from the ROSAT Deep Cluster Survey. The arc is characterized by a very red...

Moderate Temperature Clusters of Galaxies from the RDCS and the High Redshift Luminosity-Temperature Relation (2002)

Holden, B. P., Stanford, S. A., Squires, G. K., Rosati, P., Tozzi, P., Eisenhardt, P., ...

We present our discovery observations and analysis of RDCS1317+2911, z = 0.805, and RDCS1350+6007, z= 0.804, two clusters of galaxies identified through X-ray emission in the ROSAT Deep Cluster...