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Related papers: Luminous Red Galaxies in Simulations: Cosmic Chron…

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Recent observations have gathered a considerable sample of high redshift galaxy candidates and determined the evolution of their luminosity function (LF). To interpret these findings, we use cosmological SPH simulations including, in…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 R. Salvaterra , A. Ferrara , P. Dayal

A statistical analysis of radial distributions of Luminous Red Galaxies (LRGs) from the Sloan Digital Sky Survey (SDSS DR7) catalogue within an interval $0.16 \leq z \leq 0.47$ is carried out. We found that the radial distribution of $\sim$…

Cosmology and Nongalactic Astrophysics · Physics 2014-02-25 Andrei I. Ryabinkov , Alexander A. Kaurov , Alexander D. Kaminker

The DESI survey will observe more than 8 million candidate luminous red galaxies (LRGs) in the redshift range $0.3<z<1.0$. Here we present a preliminary version of the DESI LRG target selection developed using Legacy Surveys Data Release 8…

We present new measurements of the luminosity function (LF) of Luminous Red Galaxies (LRGs) from the Sloan Digital Sky Survey (SDSS) and the 2dF-SDSS LRG and Quasar (2SLAQ) survey. We have carefully quantified, and corrected for,…

In this work, we perform a full-spectrum fitting of 350 massive and passive galaxies selected as cosmic chronometers from the LEGA-C ESO public survey to derive their stellar ages, metallicities, and star-formation histories. We extensively…

Cosmology and Nongalactic Astrophysics · Physics 2023-04-10 Kang Jiao , Nicola Borghi , Michele Moresco , Tong-Jie Zhang

We describe the construction of MegaZ-LRG, a photometric redshift catalogue of over one million luminous red galaxies (LRGs) in the redshift range 0.4 < z < 0.7 with limiting magnitude i < 20. The catalogue is selected from the imaging data…

In this paper, we select a sample of quiescent luminous red galaxies (LRGs) from Sloan Digital Sky Survey Data Release 7 (SDSS DR7) with signal-to-noise ratio (S/N) substantially high to study the consistency of the full spectrum fitting…

Cosmology and Nongalactic Astrophysics · Physics 2013-05-15 Gaochao Liu , Youjun Lu , Xuelei Chen , Wei Du , Yongheng Zhao

Hubble Space Telescope images of high-redshift galaxies selected via color and photometric redshifts are used to examine the size and axial-ratio distribution of galaxies as a function of redshift at lookback times t > 8 Gyr. These…

Estimating a reliable covariance matrix for correlation functions of galaxies is a crucial task to obtain accurate cosmological constraints from galaxy surveys. We generate 2,000 independent lightcone mock luminous red galaxy (LRGs)…

Cosmology and Nongalactic Astrophysics · Physics 2024-03-04 Shogo Ishikawa , Teppei Okumura , Takahiro Nishimichi

(Abridged) We present rest-frame R-band galaxy luminosity function measurements for three different redshift ranges: 0.5<=z<=0.75, 0.75<=z<=1.0, and 1.0<=z<=1.5. Our measurements are based on photometric redshifts for ~3000 H-band selected…

Few galaxies have been found between the redshift ranges z < ~1 probed by magnitude-limited surveys and z > ~3 probed by Lyman-break surveys. Comparison of galaxy samples at lower and higher redshift suggests that large numbers of stars…

We introduce IRMaGiC, an algorithm built based on RedMaGiC desgined to enhance the selection of Luminous Red Galaxies (LRGs) across the redshift range $1 \leq z \leq 2$. We show that this method extends the capabilities of the redMaGiC…

Cosmology and Nongalactic Astrophysics · Physics 2026-04-24 Zhiyuan Guo , Chris. W. Walter , Eli S. Rykoff

We construct samples of optically-selected clusters and photometric luminous red galaxies (LRGs) from the Hyper Suprime-Cam Subaru Strategic Program final year dataset covering $\sim 1200$~deg$^2$. The cluster catalogs extend out to the…

Cosmic chronometers may be used to measure the age difference between passively evolving galaxy populations to calculate the Hubble parameter H(z). The age estimator emerges from the relationship between the amplitude of the rest frame…

Cosmology and Nongalactic Astrophysics · Physics 2018-07-04 M. Lopez-Corredoira , A. Vazdekis

Luminous red galaxies (LRGs) and blue star-forming emission-line galaxies (ELGs) are key tracers of large-scale structure used by cosmological surveys. Theoretical predictions for such data are often done via simplistic models for the…

There have been a number of studies dedicated to identification of fossil galaxy groups, arguably groups with a relatively old formation epoch. Most of such studies identify fossil groups, primarily based on a large luminosity gap, which is…

Cosmology and Nongalactic Astrophysics · Physics 2014-05-19 Mojtaba Raouf , Habib G. Khosroshahi , Trevor J. Ponman , Ali A. Dariush , Alireza Molaeinezhad , Saeed Tavasoli

We explore the epoch dependence of number density and star-formation rate for submillimetre galaxies (SMGs) found at 850 um. The study uses a sample of 38 SMG in the GOODS-N field, for which cross-waveband identifications have been obtained…

Astrophysics · Physics 2009-11-13 J. V. Wall , Alexandra Pope , D. S. Scott

It is argued that cosmic chronometers yield estimates of the spatially averaged expansion rate even in a universe that is not well described by a global FLRW model - as long as the Universe is statistically homogeneous and isotropic with a…

Cosmology and Nongalactic Astrophysics · Physics 2021-06-11 S. M. Koksbang

We analyzed the spatial distribution of 28500 photometrically selected galaxies with AB magnitude 23.5<R<25.5 and redshift 1.4<z<3.5 in 21 fields with a total area of 0.81 square degrees. The galaxies were divided into three subsamples,…

Astrophysics · Physics 2009-11-10 K. L. Adelberger , C. C. Steidel , M. Pettini , A. E. Shapley , N. A. Reddy , D. K. Erb

We present the clustering analysis of photometric luminous red galaxies (LRGs) at a redshift range of $0.1\leq z \leq 1.05$ using $615,317$ photometric LRGs selected from the Hyper Suprime-Cam Subaru Strategic Program covering $\sim124$…

Astrophysics of Galaxies · Physics 2021-11-24 Shogo Ishikawa , Teppei Okumura , Masamune Oguri , Sheng-Chieh Lin