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相关论文: The X-shooter Lens Survey - II. Sample presentatio…

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We present the first results from the X-shooter Lens Survey (XLENS): an analysis of the massive early-type galaxy SDSS J1148+1930 at redshift z=0.444. We combine its extended kinematic profile -derived from spectra obtained with X-shooter…

宇宙学与河外天体物理 · 物理学 2015-05-27 C. Spiniello , L. V. E. Koopmans , S. C. Trager , O. Czoske , T. Treu

We conduct a detailed lensing, dynamics and stellar population analysis of nine massive lens early-type galaxies (ETGs) from the X-Shooter Lens Survey (XLENS). Combining gravitational lensing constraints from HST imaging with…

星系天体物理 · 物理学 2015-05-28 C. Spiniello , M. Barnabè , L. V. E. Koopmans , S. C. Trager

This paper presents the full VLT/VIMOS-IFU data set and related data products from an ESO Large Programme with the observational goal of obtaining two-dimensional kinematic data of early-type lens galaxies, out to one effective radius. The…

宇宙学与河外天体物理 · 物理学 2015-05-30 Oliver Czoske , Matteo Barnabè , Léon V. E. Koopmans , Tommaso Treu , Adam S. Bolton

Context: The number of known strong gravitational lenses is expected to grow substantially in the next few years. The statistical combination of large samples of lenses has the potential of providing strong constraints on the inner…

星系天体物理 · 物理学 2021-07-07 Alessandro Sonnenfeld , Marius Cautun

The combination of strong gravitational lensing and stellar kinematics provides a powerful and robust method to investigate the mass and dynamical structure of early-type galaxies. We demonstrate this approach by analysing two massive…

星系天体物理 · 物理学 2015-06-22 Matteo Barnabè , Chiara Spiniello , Léon V. E. Koopmans

The Initial Mass Function (IMF) for massive galaxies can be constrained by combining stellar dynamics with strong gravitational lensing. However, this method is limited by degeneracies between the density profile of dark matter and the…

The Sloan Lens ACS (SLACS) is the best studied sample of strong lenses to date. Much of our knowledge of the SLACS lenses has been obtained by combining strong lensing with stellar kinematics constraints. However, interpreting stellar…

星系天体物理 · 物理学 2025-05-14 Alessandro Sonnenfeld

Low-redshift strong-lensing galaxies can provide robust measurements of the stellar mass-to-light ratios in early-type galaxies (ETG), and hence constrain variations in the stellar initial mass function (IMF). At present, only a few such…

星系天体物理 · 物理学 2020-03-11 William P. Collier , Russell J. Smith , John R. Lucey

We present results from a blind survey to identify strong gravitational lenses among the population of low-redshift early-type galaxies. The SINFONI Nearby Elliptical Lens Locator Survey (SNELLS) uses integral-field infrared spectroscopy to…

星系天体物理 · 物理学 2015-06-24 Russell J. Smith , John R. Lucey , Charlie Conroy

We present a spatially resolved comparison of the stellar-mass and total-mass surface distributions of nine early-type galaxies. The galaxies are a subset of the Sloan Lens ACS survey (or SLACS; Bolton et al. 2006). The total-mass…

天体物理学 · 物理学 2009-11-13 Ignacio Ferreras , Prasenjit Saha , Scott Burles

We present the first three galaxy clusters of a larger sample of the most X-ray luminous galaxy clusters selected from the ROSAT Bright Survey. This project, which is a systematic search for strong lensing, aims at arc statistics, mass…

天体物理学 · 物理学 2009-11-10 W. Kausch , S. Schindler , T. Kronberger , J. Wambsganss , A. Schwope , T. Erben , ;

We present new observations of the three nearest early-type galaxy (ETG) strong lenses discovered in the SINFONI Nearby Elliptical Lens Locator Survey (SNELLS). Based on their lensing masses, these ETGs were inferred to have a stellar…

星系天体物理 · 物理学 2017-08-30 Andrew B. Newman , Russell J. Smith , Charlie Conroy , Alexa Villaume , Pieter van Dokkum

We present a joint weak lensing and X-ray analysis of 4 deg$^2$ from the CFHTLS and XMM-LSS surveys. Our weak lensing analysis is the first analysis of a real survey using shapelets, a new generation weak lensing analysis method. We create…

We present a new sample of galaxy-scale strong gravitational-lens candidates, selected from 904 square degrees of Data Release 4 of the Kilo-Degree Survey (KiDS), i.e., the "Lenses in the Kilo-Degree Survey" (LinKS) sample. We apply two…

By using the SDSS multicolor photometry and lens modeling, we study stellar mass properties and the luminous and dark matter composition of the 57 early-type lens galaxies analyzed by the SLACS Survey. We fit the lens SEDs composed of ugriz…

星系天体物理 · 物理学 2015-05-13 C. Grillo , R. Gobat , M. Lombardi , P. Rosati

Strong lensing has developed into an important astrophysical tool for probing both cosmology and galaxies (their structure, formation, and evolution). Using the gravitational lensing theory and cluster mass distribution model, we try to…

宇宙学与河外天体物理 · 物理学 2015-05-28 Shuo Cao , Yu Pan , Marek Biesiada , Wlodzimierz Godlowski , Zong-Hong Zhu

We study the correlation between the locations of galaxy-galaxy strong lensing candidates and tracers of large-scale structure from both weak lensing or X-ray emission. The COSMOS survey is a unique data set, combining deep, high resolution…

The goal of this paper is to develop a machine learning model to analyze the main gravitational lens and detect dark substructure (subhalos) within simulated images of strongly lensed galaxies. Using the technique of image segmentation, we…

宇宙学与河外天体物理 · 物理学 2022-01-27 Bryan Ostdiek , Ana Diaz Rivero , Cora Dvorkin

Time-delay strong lensing (TDSL) is a powerful probe of the current expansion rate of the Universe. However, in light of the discrepancies between early and late-time cosmological studies, efforts revolve around the characterisation of…

宇宙学与河外天体物理 · 物理学 2023-06-28 A. Yıldırım , S. H. Suyu , G. C. -F. Chen , E. Komatsu

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…

宇宙学与河外天体物理 · 物理学 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
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