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301. YOUNG GALAXY CANDIDATES IN THE HUBBLE FRONTIER FIELDS. I. A2744

Author

Zheng, Wei, primary, Shu, Xinwen, additional, Moustakas, John, additional, Zitrin, Adi, additional, Ford, Holland C., additional, Huang, Xingxing, additional, Broadhurst, Tom, additional, Molino, Alberto, additional, Diego, Jose M., additional, Infante, Leopoldo, additional, Bauer, Franz E., additional, Kelson, Daniel D., additional, and Smit, Renske, additional

Published
2014
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302. CLASH-X: A COMPARISON OF LENSING AND X-RAY TECHNIQUES FOR MEASURING THE MASS PROFILES OF GALAXY CLUSTERS

Author

Donahue, Megan, primary, Voit, G. Mark, additional, Mahdavi, Andisheh, additional, Umetsu, Keiichi, additional, Ettori, Stefano, additional, Merten, Julian, additional, Postman, Marc, additional, Hoffer, Aaron, additional, Baldi, Alessandro, additional, Coe, Dan, additional, Czakon, Nicole, additional, Bartelmann, Mattias, additional, Benitez, Narciso, additional, Bouwens, Rychard, additional, Bradley, Larry, additional, Broadhurst, Tom, additional, Ford, Holland, additional, Gastaldello, Fabio, additional, Grillo, Claudio, additional, Infante, Leopoldo, additional, Jouvel, Stephanie, additional, Koekemoer, Anton, additional, Kelson, Daniel, additional, Lahav, Ofer, additional, Lemze, Doron, additional, Medezinski, Elinor, additional, Melchior, Peter, additional, Meneghetti, Massimo, additional, Molino, Alberto, additional, Moustakas, John, additional, Moustakas, Leonidas A., additional, Nonino, Mario, additional, Rosati, Piero, additional, Sayers, Jack, additional, Seitz, Stella, additional, Van der Wel, Arjen, additional, Zheng, Wei, additional, and Zitrin, Adi, additional

Published
2014
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303. Mass and Hot Baryons in Massive Galaxy Clusters from Subaru Weak Lensing and AMiBA SZE Observations

Author

Umetsu, Keiichi, Birkinshaw, Mark, Liu, Guo-Chin, Wu, Jiun-Huei Proty, Medezinski, Elinor, Broadhurst, Tom, Lemze, Doron, Zitrin, Adi, Ho, Paul T. P., Huang, Chih-Wei Locutus, Koch, Patrick M., Liao, Yu-Wei, Lin, Kai-Yang, Molnar, Sandor M., Nishioka, Hiroaki, Wang, Fu-Cheng, Altamirano, Pablo, Chang, Chia-Hao, Chang, Shu-Hao, Chang, Su-Wei, Chen, Ming-Tang, Han, Chih-Chiang, Huang, Yau-De, Hwang, Yuh-Jing, Jiang, Homin, Kesteven, Michael, Kubo, Derek Y., Li, Chao-Te, Martin-Cocher, Pierre, Oshiro, Peter, Raffin, Philippe, Wei, Tashun, and Wilson, Warwick

Subjects
Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics
Abstract

We present a multiwavelength analysis of a sample of four hot (T_X>8keV) X-ray galaxy clusters (A1689, A2261, A2142, and A2390) using joint AMiBA Sunyaev-Zel'dovich effect (SZE) and Subaru weak lensing observations, combined with published X-ray temperatures, to examine the distribution of mass and the intracluster medium (ICM) in massive cluster environments. Our observations show that A2261 is very similar to A1689 in terms of lensing properties. Many tangential arcs are visible around A2261, with an effective Einstein radius \sim 40 arcsec (at z \sim 1.5), which when combined with our weak lensing measurements implies a mass profile well fitted by an NFW model with a high concentration c_{vir} \sim 10, similar to A1689 and to other massive clusters. The cluster A2142 shows complex mass substructure, and displays a shallower profile (c_{vir} \sim 5), consistent with detailed X-ray observations which imply recent interaction. The AMiBA map of A2142 exhibits an SZE feature associated with mass substructure lying ahead of the sharp north-west edge of the X-ray core suggesting a pressure increase in the ICM. For A2390 we obtain highly elliptical mass and ICM distributions at all radii, consistent with other X-ray and strong lensing work. Our cluster gas fraction measurements, free from the hydrostatic equilibrium assumption, are overall in good agreement with published X-ray and SZE observations, with the sample-averaged gas fraction of = 0.133 \pm 0.027, for our sample = (1.2 \pm 0.1) \times 10^{15} M_{sun} h^{-1}. When compared to the cosmic baryon fraction f_b = \Omega_b/\Omega_m constrained by the WMAP 5-year data, this indicates /f_b = 0.78 \pm 0.16, i.e., (22 \pm 16)% of the baryons are missing from the hot phase of clusters., Comment: accepted for publication in ApJ; high resolution figures available at http://www.asiaa.sinica.edu.tw/~keiichi/upfiles/AMiBA7/ms_highreso.pdf

Published
2008

304. The third image of the large-separation lensed quasar SDSS J1029+26231

Author

Oguri, Masamune, Ofek, Eran O., Inada, Naohisa, Morokuma, Tomoki, Falco, Emilio E., Kochanek, Christopher S., Kayo, Issha, Broadhurst, Tom, and Richards, Gordon T.

Subjects
Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

We identify a third image in the unique quasar lens SDSS J1029+2623, the second known quasar lens produced by a massive cluster of galaxies. The spectrum of the third image shows similar emission and absorption features but has a redder continuum than the other two images, which can be explained by differential extinction or microlensing. We also identify several lensed arcs. Our observations suggest a complicated structure of the lens cluster at z ≈ 0.6. We argue that the three lensed images are produced by a naked cusp on the basis of successful mass models, the distribution of cluster member galaxies, and the shapes and locations of the lensed arcs. Lensing by a naked cusp is quite rare among galaxy-scale lenses but is predicted to be common among large-separation lensed quasars. Thus the discovery can be viewed as support for an important theoretical prediction of the standard cold dark matter model.

Published
2008

305. The SDSS Discovery of a Strongly Lensed Post-Starburst Galaxy at z=0.766

Author

Shin, Min-Su, Strauss, Michael A., Oguri, Masamune, Inada, Naohisa, Falco, Emilio E., Broadhurst, Tom, and Gunn, James E.

Subjects
Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

We present the first result of a survey for strong galaxy-galaxy lenses in Sloan Digital Sky Survey (SDSS) images. SDSS J082728.70+223256.4 was selected as a lensing candidate using selection criteria based on the color and positions of objects in the SDSS photometric catalog. Follow-up imaging and spectroscopy showed this object to be a lensing system. The lensing galaxy is an elliptical at z = 0.349 in a galaxy cluster. The lensed galaxy has the spectrum of a post-starburst galaxy at z = 0.766. The lensing galaxy has an estimated mass of $\sim 1.2 \times 10^{12} M_{\odot}$ and the corresponding mass to light ratio in the B-band is $\sim 26 M_{\odot}/L_{\odot}$ inside 1.1 effective radii of the lensing galaxy. Our study shows how catalogs drawn from multi-band surveys can be used to find strong galaxy-galaxy lenses having multiple lens images. Our strong lensing candidate selection based on photometry-only catalogs will be useful in future multi-band imaging surveys such as SNAP and LSST., Comment: Accepted for publication in AJ

Published
2008
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306. Precise clustering and density evolution of redMaPPer galaxy clusters versus MXXL simulation.

Author

Jimeno, Pablo, Broadhurst, Tom, Lazkoz, Ruth, Angulo, Raul, Diego, Jose-Maria, Keiichi Umetsu, and Ming-chung Chu

Subjects
*GRAVITATIONAL lenses, *GALAXY clusters, *GALACTIC redshift, *DARK matter, *METAPHYSICAL cosmology, *ASTRONOMICAL observations, *LARGE scale structure (Astronomy)
Abstract

We construct a large, redshift-complete sample of distant galaxy clusters by correlating Sloan Digital Sky Survey Data Release 12 redshifts with clusters identified with the red-sequence Matched-filter Probabilistic Percolation (redMaPPer) algorithm. Our spectroscopic completeness is >97 per cent for ≃7000 clusters within the redMaPPer selection limit, z ≤ 0.325, so that our cluster correlation functions aremuch more precise than earlierwork and not suppressed by uncertain photometric redshifts. We derive an accurate power-law mass-richness relation from the observed abundance with respect to the mass function from Millennium XXL (MXXL) simulations, adjusted to the Planck-weighted cosmology. The number density of clusters is found to decline by 20 per cent over the range 0.1 < z < 0.3, in good agreement with the evolution predicted by MXXL. Our projected 3D correlation function scales with richness, λ, rising from r0 = 14 h-1 Mpc at λ ≃ 25 to r0 = 22 h-1 Mpc at λ ≃ 60, with a gradient that matches MXXL when applying our mass-richness relation, whereas the observed amplitude of the correlation function at (z) = 0.24 exceeds the MXXL prediction by 20 per cent at the ≃2.5σ level. This tension cannot be blamed on spurious, randomly located clusters as this would reduce the correlation amplitude. Full consistency between the correlation function and the abundances is achievable for the pre-Planck values of σ8 = 0.9, Ωm = 0.25 and h = 0.73, matching the improved distance ladder estimate of the Hubble constant. [ABSTRACT FROM AUTHOR]

Published
2017
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307. The ALHAMBRA Survey: For a systematic Study of Cosmic Evolution

Author

Moles, Mariano, Alfaro, Emilio, Benítez, Narciso, Broadhurst, Tom, Castander, Francisco J., Cepa, Jordi, Cerviño, Miguel, Alberto Fernandez-Soto, González Delgado, Rosa M., Infante, Leopoldo, López Aguerri, Alfonso, Márquez, Isabel, Martínez, Vicent J., Masegosa, Josefa, Del Olmo, Ascensión, Perea, Jaime, Prada, Francisco, Quintana, José M., and Sánchez, Sebastián

Subjects
Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics
Abstract

ALHAMBRA is a project to gather data to sample a fraction of the Universe with enough precision to follow the evolution of its content and properties with z, a kind of Cosmic Tomography. It is defined as a 4 square degrees photometric survey with 20 contiguous, equal width, medium band filters covering from 3500 to 9700 A, plus the JHKs NIR bands. It was optimized to get (for a fixed observing time) the maximum number of objects with accurate classification and redshift and to be sensitive to relatively faint emission features. The observations will be carried out with the 3.5m telescope in Calar Alto (Spain). We intend to reach the limit AB=25 in all the optical filters from the bluest to 8300 A, and from 24.7 to 23.4 for the remainder. The expected limit in the NIR is fixed at Ks=20, H=21, J=22. The homogeneous and contiguous spectral coverage will result in several hundred thousand objects with accurate SED identification and z-values. The accuracy of the survey will allow to make detailed studies, including galactic, without the need for any further follow-up. Indeed, it will provide exciting targets for large telescopes, the GTC in particular., Comment: 18 pages, 7 figures, proceedings of the JENAM 2004

Published
2005
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310. A GEOMETRICALLY SUPPORTED z ∼ 10 CANDIDATE MULTIPLY IMAGED BY THE HUBBLE FRONTIER FIELDS CLUSTER A2744

Author

Zitrin, Adi, primary, Zheng, Wei, additional, Broadhurst, Tom, additional, Moustakas, John, additional, Lam, Daniel, additional, Shu, Xinwen, additional, Huang, Xingxing, additional, Diego, Jose M., additional, Ford, Holland, additional, Lim, Jeremy, additional, Bauer, Franz E., additional, Infante, Leopoldo, additional, Kelson, Daniel D., additional, and Molino, Alberto, additional

Published
2014
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313. CLASH-VLT: CONSTRAINTS ON THE DARK MATTER EQUATION OF STATE FROM ACCURATE MEASUREMENTS OF GALAXY CLUSTER MASS PROFILES

Author

Sartoris, Barbara, primary, Biviano, Andrea, additional, Rosati, Piero, additional, Borgani, Stefano, additional, Umetsu, Keiichi, additional, Bartelmann, Matthias, additional, Girardi, Marisa, additional, Grillo, Claudio, additional, Lemze, Doron, additional, Zitrin, Adi, additional, Balestra, Italo, additional, Mercurio, Amata, additional, Nonino, Mario, additional, Postman, Marc, additional, Czakon, Nicole, additional, Bradley, Larry, additional, Broadhurst, Tom, additional, Coe, Dan, additional, Medezinski, Elinor, additional, Melchior, Peter, additional, Meneghetti, Massimo, additional, Merten, Julian, additional, Annunziatella, Marianna, additional, Benitez, Narciso, additional, Czoske, Oliver, additional, Donahue, Megan, additional, Ettori, Stefano, additional, Ford, Holland, additional, Fritz, Alexander, additional, Kelson, Dan, additional, Koekemoer, Anton, additional, Kuchner, Ulrike, additional, Lombardi, Marco, additional, Maier, Christian, additional, Moustakas, Leonidas A., additional, Munari, Emiliano, additional, Presotto, Valentina, additional, Scodeggio, Marco, additional, Seitz, Stella, additional, Tozzi, Paolo, additional, Zheng, Wei, additional, and Ziegler, Bodo, additional

Published
2014
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314. Cloning Dropouts: Implications for Galaxy Evolution at High Redshift

Author

Bouwens, Rychard J., Broadhurst, Tom, and Illingworth, Garth

Subjects
Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics
Abstract

The evolution of high redshift galaxies in the two Hubble Deep Fields, HDF-N and HDF-S, is investigated using a cloning technique that replicates z~ 2-3 U dropouts to higher redshifts, allowing a comparison with the observed B and V dropouts at higher redshifts (z ~ 4-5). We treat each galaxy selected for replication as a set of pixels that are k-corrected to higher redshift, accounting for resampling, shot-noise, surface-brightness dimming, and the cosmological model. We find evidence for size evolution (a 1.7x increase) from z ~ 5 to z ~ 2.7 for flat geometries (Omega_M+Omega_LAMBDA=1.0). Simple scaling laws for this cosmology predict that size evolution goes as (1+z)^{-1}, consistent with our result. The UV luminosity density shows a similar increase (1.85x) from z ~ 5 to z ~ 2.7, with minimal evolution in the distribution of intrinsic colors for the dropout population. In general, these results indicate less evolution than was previously reported, and therefore a higher luminosity density at z ~ 4-5 (~ 50% higher) than other estimates. We argue the present technique is the preferred way to understand evolution across samples with differing selection functions, the most relevant differences here being the color cuts and surface brightness thresholds (e.g., due to the (1+z)^4 cosmic surface brightness dimming effect)., Comment: 56 pages, 22 figures, accepted for publication in ApJ

Published
2003
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317. CLASH: COMPLETE LENSING ANALYSIS OF THE LARGEST COSMIC LENS MACS J0717.5+3745 AND SURROUNDING STRUCTURES

Author

Medezinski, Elinor, primary, Umetsu, Keiichi, additional, Nonino, Mario, additional, Merten, Julian, additional, Zitrin, Adi, additional, Broadhurst, Tom, additional, Donahue, Megan, additional, Sayers, Jack, additional, Waizmann, Jean-Claude, additional, Koekemoer, Anton, additional, Coe, Dan, additional, Molino, Alberto, additional, Melchior, Peter, additional, Mroczkowski, Tony, additional, Czakon, Nicole, additional, Postman, Marc, additional, Meneghetti, Massimo, additional, Lemze, Doron, additional, Ford, Holland, additional, Grillo, Claudio, additional, Kelson, Daniel, additional, Bradley, Larry, additional, Moustakas, John, additional, Bartelmann, Matthias, additional, Benítez, Narciso, additional, Biviano, Andrea, additional, Bouwens, Rychard, additional, Golwala, Sunil, additional, Graves, Genevieve, additional, Infante, Leopoldo, additional, Jiménez-Teja, Yolanda, additional, Jouvel, Stephanie, additional, Lahav, Ofer, additional, Moustakas, Leonidas, additional, Ogaz, Sara, additional, Rosati, Piero, additional, Seitz, Stella, additional, and Zheng, Wei, additional

Published
2013
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318. THE CONTRIBUTION OF HALOS WITH DIFFERENT MASS RATIOS TO THE OVERALL GROWTH OF CLUSTER-SIZED HALOS

Author

Lemze, Doron, primary, Postman, Marc, additional, Genel, Shy, additional, Ford, Holland C., additional, Balestra, Italo, additional, Donahue, Megan, additional, Kelson, Daniel, additional, Nonino, Mario, additional, Mercurio, Amata, additional, Biviano, Andrea, additional, Rosati, Piero, additional, Umetsu, Keiichi, additional, Sand, David, additional, Koekemoer, Anton, additional, Meneghetti, Massimo, additional, Melchior, Peter, additional, Newman, Andrew B., additional, Bhatti, Waqas A., additional, Voit, G. Mark, additional, Medezinski, Elinor, additional, Zitrin, Adi, additional, Zheng, Wei, additional, Broadhurst, Tom, additional, Bartelmann, Matthias, additional, Benitez, Narciso, additional, Bouwens, Rychard, additional, Bradley, Larry, additional, Coe, Dan, additional, Graves, Genevieve, additional, Grillo, Claudio, additional, Infante, Leopoldo, additional, Jimenez-Teja, Yolanda, additional, Jouvel, Stephanie, additional, Lahav, Ofer, additional, Maoz, Dan, additional, Merten, Julian, additional, Molino, Alberto, additional, Moustakas, John, additional, Moustakas, Leonidas, additional, Ogaz, Sara, additional, Scodeggio, Marco, additional, and Seitz, Stella, additional

Published
2013
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319. Spectral Evidence for Widespread Galaxy Outflows at z>4

Author

Frye, Brenda, Broadhurst, Tom, and Benitez, Narciso

Subjects
Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

We present discovery spectra of a sample of eight lensed galaxies at high redshift, 3.7, Comment: 48 pages, 16 figures, ApJ, in press. Manuscript with full resolution color images available at (http://astro.princeton.edu/~bfrye)

Published
2001

321. GALAXY HALO TRUNCATION AND GIANT ARC SURFACE BRIGHTNESS RECONSTRUCTION IN THE CLUSTER MACSJ1206.2-0847

Author

Eichner, Thomas, primary, Seitz, Stella, additional, Suyu, Sherry H., additional, Halkola, Aleksi, additional, Umetsu, Keiichi, additional, Zitrin, Adi, additional, Coe, Dan, additional, Monna, Anna, additional, Rosati, Piero, additional, Grillo, Claudio, additional, Balestra, Italo, additional, Postman, Marc, additional, Koekemoer, Anton, additional, Zheng, Wei, additional, Høst, Ole, additional, Lemze, Doron, additional, Broadhurst, Tom, additional, Moustakas, Leonidas, additional, Bradley, Larry, additional, Molino, Alberto, additional, Nonino, Mario, additional, Mercurio, Amata, additional, Scodeggio, Marco, additional, Bartelmann, Matthias, additional, Benitez, Narciso, additional, Bouwens, Rychard, additional, Donahue, Megan, additional, Infante, Leopoldo, additional, Jouvel, Stephanie, additional, Kelson, Daniel, additional, Lahav, Ofer, additional, Medezinski, Elinor, additional, Melchior, Peter, additional, Merten, Julian, additional, and Riess, Adam, additional

Published
2013
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324. A free-form mass model of the Hubble Frontier Fields cluster AS1063 (RXC J2248.7-4431) with over one hundred constraints.

Author

Diego, Jose M., Broadhurst Broadhurst, Tom, Jess Wong, Silk, Joseph, Jeremy Lim, Wei Zheng, Daniel Lam, and Ford, Holland

Subjects
*STAR formation, *REDSHIFT, *SUPERGIANT stars, *STAR clusters, *SPECTROSCOPIC imaging, *ASTRONOMICAL models
Abstract

We derive a free-form mass distribution for the massive cluster AS1063 (z = 0.348) using the completed optical imaging from the Hubble Frontier Fields programmme. Based on a subset of 11 multiply lensed systems with spectroscopic redshift, we produce a lens model that is accurate enough to secure new multiply lensed systems, totalling over a 100 arclets, and to estimate their redshifts geometrically. Consistency is found between this precise model and that obtained using only the subset of lensed sources with spectroscopically measured redshifts. Although a relatively large elongation of the mass distribution is apparent relative to the X-ray map, no significant offset is found between the centroid of our mass distribution and that of the X-ray emission map, suggesting a relatively relaxed state for this cluster. For the well-resolved lensed images, we provide detailed model comparisons to illustrate the precision of our model and hence the reliability of our de-lensed sources. A clear linear structure is associated with one such source extending 23 kpc in length, that could be an example of jet-induced star formation, at redshift z ≈ 3.1. [ABSTRACT FROM AUTHOR]

Published
2016
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325. A free-form prediction for the reappearance of supernova Refsdal in the Hubble Frontier Fields cluster MACSJ1149.5+2223.

Author

Diego, Jose M., Broadhurst, Tom, Cuncheng Chen, Lim, Jeremy, Zitrin, Adi, Brian Chan, Dan Coe, Ford, Holland C., Lam, Daniel, and Wei Zheng

Subjects
*SUPERNOVAE, *GALAXY clusters, *SPIRAL galaxies, *METAPHYSICAL cosmology, *DARK matter
Abstract

The massive cluster MACSJ1149.5+2223(z = 0.544) displays five very large lensed images of a well-resolved spiral galaxy at zspect = 1.491. It is within one of these images that the first example of a multiply lensed supernova (SN) has been detected recently as part of the Grism Lens-Amplified Survey from Space. The depth of this data also reveals many H II regions within the lensed spiral galaxy which we identify between the five counter-images. Here, we expand the capability of our free-form method to incorporate these H II regions locally, with other reliable lensed galaxies added for a global solution. This improved accuracy allows us to estimate when the Refsdal SN will appear within the other lensed images of the spiral galaxy to an accuracy of ~7 per cent. We predict this SN will reappear in one of the counter-images (RA = 11:49:36.025, Dec. = +22:23:48.11, J2000) and on 2015 November 1 (with an estimated error of ±25 d) it will be at the same phase as it was when it was originally discovered, offering a unique opportunity to study the early phases of this SN and to examine the consistency of the mass model and the cosmological model that have an impact on the time delay prediction. [ABSTRACT FROM AUTHOR]

Published
2016
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327. CLASH: THREE STRONGLY LENSED IMAGES OF A CANDIDATEz≈ 11 GALAXY

Author

Coe, Dan, primary, Zitrin, Adi, additional, Carrasco, Mauricio, additional, Shu, Xinwen, additional, Zheng, Wei, additional, Postman, Marc, additional, Bradley, Larry, additional, Koekemoer, Anton, additional, Bouwens, Rychard, additional, Broadhurst, Tom, additional, Monna, Anna, additional, Host, Ole, additional, Moustakas, Leonidas A., additional, Ford, Holland, additional, Moustakas, John, additional, van der Wel, Arjen, additional, Donahue, Megan, additional, Rodney, Steven A., additional, Benítez, Narciso, additional, Jouvel, Stephanie, additional, Seitz, Stella, additional, Kelson, Daniel D., additional, and Rosati, Piero, additional

Published
2012
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330. CLASH: PRECISE NEW CONSTRAINTS ON THE MASS PROFILE OF THE GALAXY CLUSTER A2261

Author

Coe, Dan, primary, Umetsu, Keiichi, additional, Zitrin, Adi, additional, Donahue, Megan, additional, Medezinski, Elinor, additional, Postman, Marc, additional, Carrasco, Mauricio, additional, Anguita, Timo, additional, Geller, Margaret J., additional, Rines, Kenneth J., additional, Diaferio, Antonaldo, additional, Kurtz, Michael J., additional, Bradley, Larry, additional, Koekemoer, Anton, additional, Zheng, Wei, additional, Nonino, Mario, additional, Molino, Alberto, additional, Mahdavi, Andisheh, additional, Lemze, Doron, additional, Infante, Leopoldo, additional, Ogaz, Sara, additional, Melchior, Peter, additional, Host, Ole, additional, Ford, Holland, additional, Grillo, Claudio, additional, Rosati, Piero, additional, Jiménez-Teja, Yolanda, additional, Moustakas, John, additional, Broadhurst, Tom, additional, Ascaso, Begoña, additional, Lahav, Ofer, additional, Bartelmann, Matthias, additional, Benítez, Narciso, additional, Bouwens, Rychard, additional, Graur, Or, additional, Graves, Genevieve, additional, Jha, Saurabh, additional, Jouvel, Stephanie, additional, Kelson, Daniel, additional, Moustakas, Leonidas, additional, Maoz, Dan, additional, Meneghetti, Massimo, additional, Merten, Julian, additional, Riess, Adam, additional, Rodney, Steve, additional, and Seitz, Stella, additional

Published
2012
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331. A BRIGHTEST CLUSTER GALAXY WITH AN EXTREMELY LARGE FLAT CORE

Author

Postman, Marc, primary, Lauer, Tod R., additional, Donahue, Megan, additional, Graves, Genevieve, additional, Coe, Dan, additional, Moustakas, John, additional, Koekemoer, Anton, additional, Bradley, Larry, additional, Ford, Holland C., additional, Grillo, Claudio, additional, Zitrin, Adi, additional, Lemze, Doron, additional, Broadhurst, Tom, additional, Moustakas, Leonidas, additional, Ascaso, Begoña, additional, Medezinski, Elinor, additional, and Kelson, Daniel, additional

Published
2012
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332. CLASH: MASS DISTRIBUTION IN AND AROUND MACS J1206.2-0847 FROM A FULL CLUSTER LENSING ANALYSIS

Author

Umetsu, Keiichi, primary, Medezinski, Elinor, additional, Nonino, Mario, additional, Merten, Julian, additional, Zitrin, Adi, additional, Molino, Alberto, additional, Grillo, Claudio, additional, Carrasco, Mauricio, additional, Donahue, Megan, additional, Mahdavi, Andisheh, additional, Coe, Dan, additional, Postman, Marc, additional, Koekemoer, Anton, additional, Czakon, Nicole, additional, Sayers, Jack, additional, Mroczkowski, Tony, additional, Golwala, Sunil, additional, Koch, Patrick M., additional, Lin, Kai-Yang, additional, Molnar, Sandor M., additional, Rosati, Piero, additional, Balestra, Italo, additional, Mercurio, Amata, additional, Scodeggio, Marco, additional, Biviano, Andrea, additional, Anguita, Timo, additional, Infante, Leopoldo, additional, Seidel, Gregor, additional, Sendra, Irene, additional, Jouvel, Stephanie, additional, Host, Ole, additional, Lemze, Doron, additional, Broadhurst, Tom, additional, Meneghetti, Massimo, additional, Moustakas, Leonidas, additional, Bartelmann, Matthias, additional, Benítez, Narciso, additional, Bouwens, Rychard, additional, Bradley, Larry, additional, Ford, Holland, additional, Jiménez-Teja, Yolanda, additional, Kelson, Daniel, additional, Lahav, Ofer, additional, Melchior, Peter, additional, Moustakas, John, additional, Ogaz, Sara, additional, Seitz, Stella, additional, and Zheng, Wei, additional

Published
2012
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337. THE CLUSTER LENSING AND SUPERNOVA SURVEY WITH HUBBLE: AN OVERVIEW

Author

Postman, Marc, primary, Coe, Dan, additional, Benítez, Narciso, additional, Bradley, Larry, additional, Broadhurst, Tom, additional, Donahue, Megan, additional, Ford, Holland, additional, Graur, Or, additional, Graves, Genevieve, additional, Jouvel, Stephanie, additional, Koekemoer, Anton, additional, Lemze, Doron, additional, Medezinski, Elinor, additional, Molino, Alberto, additional, Moustakas, Leonidas, additional, Ogaz, Sara, additional, Riess, Adam, additional, Rodney, Steve, additional, Rosati, Piero, additional, Umetsu, Keiichi, additional, Zheng, Wei, additional, Zitrin, Adi, additional, Bartelmann, Matthias, additional, Bouwens, Rychard, additional, Czakon, Nicole, additional, Golwala, Sunil, additional, Host, Ole, additional, Infante, Leopoldo, additional, Jha, Saurabh, additional, Jimenez-Teja, Yolanda, additional, Kelson, Daniel, additional, Lahav, Ofer, additional, Lazkoz, Ruth, additional, Maoz, Dani, additional, McCully, Curtis, additional, Melchior, Peter, additional, Meneghetti, Massimo, additional, Merten, Julian, additional, Moustakas, John, additional, Nonino, Mario, additional, Patel, Brandon, additional, Regös, Enikö, additional, Sayers, Jack, additional, Seitz, Stella, additional, and Van der Wel, Arjen, additional

Published
2012
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338. Gravitational 'Convergence' and Cluster Masses

Author

Broadhurst, Tom

Subjects
Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

Two colour photometry of the cluster A1689 reveals a `relative magnification-bias' between lensed blue and red background galaxies, arising from a dependence of the faint galaxy count-slope on colour. The colour distribution is skewed blueward of the far field, allowing us to measure the cluster magnification and to understand the notorious blueness of large arcs. We show that the magnification information can be combined with the usual image distortion measurements to isolate the local `convergence' component of lensing and hence derive the projected mass. This is achieved through a simple local relation between the convergence and the observables, which can be applied generally over the surface a cluster. In the weak lensing limit, the convergence reduces to a dependence on the magnification alone, so that in the outskirts of clusters the surface-density of matter is obtained directly from the surface-density of background galaxies. Hence, useful lensing work requires colour information but not necessarily good seeing. Interestingly, convergence varies slowly at high redshift, saturating at a level depending on the Horizon distance, allowing a useful model-independent measurement of the Global Geometry., 12 pages, compressed uuencoded, 3 figures

Published
1995

346. Full lensing analysis of Abell 1703: comparison of independent lens-modelling techniques

Author

Zitrin, Adi, primary, Broadhurst, Tom, additional, Umetsu, Keiichi, additional, Rephaeli, Yoel, additional, Medezinski, Elinor, additional, Bradley, Larry, additional, Jiménez-Teja, Yolanda, additional, Benítez, Narciso, additional, Ford, Holland, additional, Liesenborgs, Jori, additional, De Rijcke, Sven, additional, Dejonghe, Herwig, additional, and Bekaert, Philippe, additional

Published
2010
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