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Related papers: Integral-field spectroscopy of SLACS lenses

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The first science image released by the JWST reveals numerous galaxies in the distant background of the galaxy cluster SMACS J0723.3-7327. Some have claimed redshifts of up to $z \simeq 20$, challenging standard cosmological models for…

Astrophysics of Galaxies · Physics 2023-10-17 Alex Chow , Sung Kei Li , Tom Broadhurst , Jeremy Lim , Man Cheung Alex Li , James Nianias , Jake Summers , Rogier Windhorst

The COSMOS field has been the subject of a wide range of observations, with a number of studies focusing on reconstructing the 3D dark matter density field. Typically, these studies have focused on one given method or tracer. In this paper,…

The zCOSMOS SINFONI project is aimed at studying the physical and kinematical properties of a sample of massive z~1.4-2.5 star-forming galaxies, through SINFONI near-IR integral field spectroscopy (IFS), combined with the multi-wavelength…

The relative contribution of baryons and dark matter to the inner regions of spiral galaxies provides critical clues to their formation and evolution, but it is generally difficult to determine. For spiral galaxies that are strong…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 T. Treu , A. A. Dutton , M. W. Auger , P. J. Marshall , A. S. Bolton , B. J. Brewer , D. Koo , L. V. E. Koopmans

We introduce a framework for simultaneously investigating the structure and luminosity evolution of early-type gravitational lens galaxies. The method is based on the fundamental plane, which we interpret using the aperture mass-radius…

Astrophysics · Physics 2009-11-10 D. Rusin , C. S. Kochanek

Galaxy-galaxy strong gravitational lenses have become a popular probe of dark matter (DM) by providing a window into structure formation on the smallest scales. In particular, the convergence power spectrum of subhalos within lensing…

Cosmology and Nongalactic Astrophysics · Physics 2020-09-25 Atınç Çağan Şengül , Arthur Tsang , Ana Diaz Rivero , Cora Dvorkin , Hong-Ming Zhu , Uroš Seljak

Gravitationally lensed systems allow a detailed view of galaxies at high redshift. High spatial- and spectral-resolution measurements of arc-like structures can offer unique constraints on the physical and dynamical properties of high-z…

Integral field spectrographs are an important technology for exoplanet imaging, due to their ability to take spectra in a high-contrast environment, and improve planet detection sensitivity through spectral differential imaging. ALES is the…

We report on our observing program to obtain integrated spectrophotometry, intermediate and high resolution major axis spectra, and U,B,R surface photo- metry of a representative sample of ~200 galaxies in the nearby field. The main goal of…

Astrophysics · Physics 2009-11-06 R. A. Jansen , S. J. Kannappan

Aims: Integral Field Spectroscopy (IFS) is a powerful approach for the study of nearby galaxies since it enables a detailed analysis of their resolved physical properties. Here we present the sample of nearby galaxies selected to exploit…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 E. Marmol-Queralto , S. F. Sanchez , R. A. Marino , D. Mast , K. Viironen , A. Gil de Paz , J. Iglesias-Paramo , F. F. Rosales-Ortega , J. M. Vilchez

This paper is based on the multi-band VST Early-type GAlaxy Survey (VEGAS) with the VLT Survey Telescope (VST). We present new deep photometry of the IC1459 group in g and r band. The main goal of this work is to investigate the photometric…

We leverage JWST's superb resolution to derive strong lensing mass maps of 14 clusters, spanning a redshift range of $z\sim0.25 - 1.06$ and a mass range of $M_{500}\sim2-12 \times 10^{14}M_\odot$, from the Strong LensIng and Cluster…

We report the discovery of an intriguing, low-mass galaxy-scale strong-lens system in the SMACS J0723.3-7327 galaxy cluster. By modeling James Webb Space Telescope imaging and Very Large Telescope Multi-Unit Spectroscopic Explorer…

Astrophysics of Galaxies · Physics 2025-04-28 Limeng Deng , Yiping Shu , Lei Wang , Guoliang Li , Gabriel Bartosch Caminha , Jiang Dong , Zizhao He , Han Qu , Ruibiao Luo

Massive early-type galaxies represent the modern-day remnants of the earliest major star formation episodes in the history of the universe. These galaxies are central to our understanding of the evolution of cosmic structure, stellar…

Astrophysics of Galaxies · Physics 2015-06-22 Chung-Pei Ma , Jenny E. Greene , Nicholas McConnell , Ryan Janish , John P. Blakeslee , Jens Thomas , Jeremy D. Murphy

Context. Most of our knowledge on the stellar component of galaxies is based on the analysis of distant systems and comes from integrated light data. It is important to test whether the results of the star formation histories (SFH) obtained…

We present a lensing and photometric study of the exceptional system SDSS J1538+5817, identified by the SLACS survey. The lens is a luminous elliptical at redshift z=0.143. Using HST public images in two different filters, the presence of…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 C. Grillo , T. Eichner , S. Seitz , R. Bender , M. Lombardi , R. Gobat , A. Bauer

(Abridged) We consider the scientific case for a large aperture (10-12m class) optical spectroscopic survey telescope with a field of view comparable to that of LSST. Such a facility could enable transformational progress in several areas…

Instrumentation and Methods for Astrophysics · Physics 2017-01-10 Richard S. Ellis , Joss Bland-Hawthorn , Malcolm Bremer , Jarle Brinchmann , Luigi Guzzo , Johan Richard , Hans-Walter Rix , Eline Tolstoy , Darach Watson

Intrinsic galaxy alignments constitute the major astrophysical systematic of forthcoming weak gravitational lensing surveys but also yield unique insights into galaxy formation and evolution. We build analytic models for the distribution of…

Cosmology and Nongalactic Astrophysics · Physics 2014-02-07 B. Joachimi , E. Semboloni , S. Hilbert , P. E. Bett , J. Hartlap , H. Hoekstra , P. Schneider

[ABRIDGED] We present the first statistical analysis of the complete ESO-Sculptor redshift survey (ESS). The flux-calibrated sample of 617 galaxy spectra with R_c<20.5 is separated into 3 spectral classes (early, intermediate, and late). We…

Astrophysics · Physics 2008-11-26 Valerie de Lapparent , Gaspar Galaz , Sandro Bardelli , Stephane Arnouts