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Related papers: Minkowski Functionals of SDSS galaxies I : Analysi…

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The morphology of haloes inform about both cosmological and galaxy formation models. We use the Minkowski Functionals (MFs) to characterize the actual morphology of haloes, only partially captured by smooth density profile, going beyond the…

Cosmology and Nongalactic Astrophysics · Physics 2022-07-25 Guillaume Bonnet , Emmanuel Nezri , Katarina Kraljic , Carlo Schimd

We present a new ansatz which can successfully be used to determine the morphological properties of the supercluster-void network. The ansatz is based on a surface modelling scheme SURFGEN, which generates a triangulated surface from a…

Astrophysics · Physics 2009-11-07 Jatush V. Sheth , Varun Sahni , Sergei F. Shandarin , B. S. Sathyaprakash

We study the luminosity function and the radial distribution of satellite galaxies within Milky Way sized haloes as predicted in Cold Dark Matter based models of galaxy formation, making use of numerical N-body techniques as well as three…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Andrea V. Maccio' , Xi Kang , Fabio Fontanot , Rachel S. Somerville , Sergey E. Koposov , Pierluigi Monaco

Luminosity functions and their integrated luminosity densities are presented for the 6dF Galaxy Survey (6dFGS). This ongoing survey ultimately aims to measure around 150,000 redshifts and 15,000 peculiar velocities over almost the entire…

Astrophysics · Physics 2009-11-11 D. Heath Jones , Bruce A. Peterson , Matthew Colless , Will Saunders

We have analyzed the spatial distribution of galaxies from the release of the Sloan Digital Sky Survey of galactic redshifts (SDSS DR7), applying the complete correlation function (conditional density), two-point conditional density…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 A. O. Verevkin , Yu. L. Bukhmastova , Yu. V. Baryshev

We compute the two-point image correlation function for bright galaxies in the seventh data release of the Sloan Digital Sky Survey (SDSS) over angular scales 0.01' <= \theta <= 120' and projected separations 0.01 Mpc <= r <= 10 Mpc. We…

Cosmology and Nongalactic Astrophysics · Physics 2009-04-22 Tereasa G. Brainerd , Ingolfur Agustsson , Chad A. Madsen , Jeffrey A. Edmonds

The morphology of the total gas and the neutral hydrogen (H I) distributions during the cosmological epoch of reionization can be quantified with Minkowski Functionals (MFs) of isodensity surfaces. We compute the MFs from the output of a…

Astrophysics · Physics 2008-11-26 Liron Gleser , Adi Nusser , Benedetta Ciardi , Vincent Desjacques

The Minkowski functionals are a mathematical tool to quantify morphological features of patterns. Some applications to the matter distribution in galaxy catalogues and N-body simulations are reviewed, with an emphasis on the effects of…

Astrophysics · Physics 2007-05-23 Alvaro Dominguez

We measure the luminosity function of morphologically selected E/S0 galaxies from z=0.5 to z=1.0 using deep high resolution Advanced Camera for Surveys (ACS) imaging data. Our data extend 2 magnitudes deeper than the Deep Groth Strip Survey…

Astrophysics · Physics 2007-05-23 Nicholas Cross , the ACS Science Team

We present number counts, luminosity functions (LFs) and luminosity densities of galaxies obtained using the Sloan Digital Sky Survey Sixth Data Release in all SDSS photometric bands. Thanks to the SDSS DR6, galaxy statistics have increased…

Astrophysics · Physics 2009-11-19 Antonio D. Montero-Dorta , Francisco Prada

The 2dF Galaxy Redshift Survey (2dFGRS) has already measured over 220,000 redshifts of nearby (z ~0.1) galaxies. It allows us to estimate fundamental cosmological parameters and to subdivide the survey into subsets according to the galaxy…

Astrophysics · Physics 2007-05-23 Ofer Lahav , the 2dFGRS team

The size-mass galaxy distribution is a key diagnostic for galaxy evolution. Massive compact galaxies are potential surviving relics of a high-redshift phase of star formation. Some of these could be nearly unresolved in SDSS imaging and…

Astrophysics of Galaxies · Physics 2020-12-08 Ivan K. Baldry , Tricia Sullivan , Raffaele Rani , Sebastian Turner

The study of shapes of the images of objects is an important issue not only because it reveals its dynamical state but also it helps to understand the object's evolutionary history. We discuss a new technique in cosmological image analysis…

Astrophysics · Physics 2016-01-27 Nurur Rahman , Sergei F. Shandarin

As deeper galaxy catalogues are soon to come, it becomes even more importantto measure large-scale fluctuations in the catalogues with robust statistics that cover all moments of the galaxy distribution.In this paper we reinforce a direct…

Cosmology and Nongalactic Astrophysics · Physics 2014-07-23 Alexander Wiegand , Thomas Buchert , Matthias Ostermann

We present source code for the computer algebra system Mathematica that analyzes the distribution of nearby Galaxies using SDSS data. Download instructions are given, thus within 10 minutes, the reader can verify that galaxies are…

Astrophysics · Physics 2008-06-10 Alexander Unzicker , Julius Fischer

We discuss the application of Minkowski functionals to galaxy catalogues with emphasis on the boundary corrections and point out the relevance for other statistical methods. The analysis of a cubic subsample of the CfA--1 data serves as an…

Astrophysics · Physics 2007-05-23 M. Kerscher , J. Schmalzing , T. Buchert

A magnitude limited sample of nearly 9000 early-type galaxies, in the redshift range 0.01 < z < 0.3, was selected from the Sloan Digital Sky Survey using morphological and spectral criteria. The sample was used to study how early-type…

A sample of white dwarfs is selected from SDSS DR3 imaging data using their reduced proper motions, based on improved proper motions from SDSS plus USNO-B combined data. Numerous SDSS and followup spectra (Kilic et al. 2005) are used to…

We studied superclusters of galaxies in a volume-limited sample extracted from the Sloan Digital Sky Survey Data Release 7 (SDSS/DR7) and from mock catalogues based on a semi-analytical model of galaxy evolution in the Millenium Simulation.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 M. V. Costa-Duarte , L. Sodré , F. Durret

We study the morphology of the richest superclusters from the catalogues of superclusters of galaxies in the 2dF Galaxy Redshift Survey and compare the morphology of real superclusters with model superclusters in the Millennium Simulation.…