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We have studied the radial distribution of the early (E/S0) and late (S/Irr) types of satellites around bright host galaxies. We made a volume-limited sample of 4,986 satellites brighter than M_r = -18.0 associated with 2,254 hosts brighter…

Astrophysics · Physics 2009-11-13 H. B. Ann , Changbom Park , Yun-Young Choi

Using the Sloan Digital Sky Survey (SDSS) galaxy group catalogue of Yang et al. (2007), we study the average colour and average concentration of satellite galaxies as function of (i) their stellar mass, (ii) their group mass, and (iii)…

We present a new cluster catalog extracted from the Sloan Digital Sky Survey Data Release 6 (SDSS DR6) using an adaptive matched filter (AMF) cluster finder. We identify 69,173 galaxy clusters in the redshift range 0.045 $\le z <$ 0.78 in…

Cosmology and Nongalactic Astrophysics · Physics 2011-07-12 Thad Szabo , Elena Pierpaoli , Feng Dong , Antonio Pipino , James E. Gunn

We use the fourth data release of the Sloan Digital Sky Survey to investigate the orientations of 4289 satellite galaxies with respect to their hosts. The orientation of the satellites is inconsistent with a random distribution at the…

Astrophysics · Physics 2009-11-11 Ingolfur Agustsson , Tereasa G. Brainerd

Misalignment of gas and stellar rotation in galaxies can give clues to the origin and processing of accreted gas. Integral field spectroscopic observations of 1213 galaxies from the SAMI Galaxy Survey show that 11% of galaxies with fitted…

Simulations of nearby (0.015 < z < 0.025) SDSS galaxies have been used to reproduce as accurately as possible the appearance that they would have on COSMOS ACS images if they had been observed at z ~ 0.7 and z ~ 1.2. By adding the SDSS…

Previous observations have suggested non-random distribution of spin directions of galaxies at scales far larger than the size of a supercluster. Here I use $\sim1.7\cdot10^5$ spiral galaxies from SDSS and $3.3\cdot10^4$ spiral galaxies…

Astrophysics of Galaxies · Physics 2020-11-17 Lior Shamir

Brightest cluster galaxies (BCGs) have grown by accreting numerous smaller galaxies and can be used as tracers of cluster formation and evolution in the cosmic web. However, there is still a controversy on the main epoch of formation of…

Astrophysics of Galaxies · Physics 2021-05-12 Aline Chu , Florence Durret , Isabel Marquez

We make use of the images from the Sloan Digital Sky Survey Stripe 82 to present an analysis of r band surface brightness profiles and radial color gradients (g - r, u - r) in 111 nearby early-type galaxies (ETGs). With Stripe 82 images, we…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Fangzhou Jiang , Song Huang , Qiusheng Gu

We determine the cross-correlation function between galaxies and galaxy groups, using both the Two-Degree Field Galaxy Redshift Survey (2dFGRS) and the Sloan Digital Sky Survey (SDSS). We study the cross-correlation as a function of group…

Astrophysics · Physics 2009-11-11 Xiaohu Yang , H. J. Mo , Frank C. van den Bosch , Simone M. Weinmann , Cheng Li , Y. P. Jing

We measure the intrinsic alignments of the blue and the red galaxies separately by analyzing the spectroscopic data of the Sloan Digital Sky Survey Data Release 6 (SDSS DR6). For both samples of the red and the blue galaxies with axial…

Astrophysics · Physics 2009-11-13 Jounghun Lee , Ue-Li Pen

Several recent observations using large datasets of galaxies showed non-random distribution of the spin directions of spiral galaxies, even when the galaxies are too far from each other to have gravitational interaction. Here, a dataset of…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-16 Lior Shamir

We investigate the luminosity and colour dependence of clustering of CMASS galaxies in the Sloan Digital Sky Survey-III Baryon Oscillation Spectroscopic Survey Tenth Data Release. The halo occupation distribution framework is adopted to…

We report a highly significant ($>10\sigma$) spatial correlation between galaxies with $S_{350\mu\rm m}\ge 30\,$mJy detected in the equatorial fields of the \textsl{Herschel} Astrophysical Terahertz Large Area Survey (H-ATLAS) with…

We infer the normalization and the radial and angular distributions of the number density of satellites of massive galaxies ($\log_{10}[M_{h}^*/M\odot]>10.5$) between redshifts 0.1 and 0.8 as a function of host stellar mass, redshift,…

Astrophysics of Galaxies · Physics 2015-06-04 A. M. Nierenberg , M. W. Auger , T. Treu , P. J. Marshall , C. D. Fassnacht , Michael T. Busha

The upcoming imaging survey of the Chinese Space-station Survey Telescope (CSST) will deliver high-resolution imaging of an unprecedented number of galaxies for galaxy studies. To understand CSST's capability, and to support the preparation…

Astrophysics of Galaxies · Physics 2026-04-28 Ziqi Ma , Si-Yue Yu , Taotao Fang , Jinyi Shangguan , Zhao-Yu Li , Luis C. Ho

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 orientation of triaxial galaxy clusters with respect to the line-of-sight is expected to be one of the prime sources of scatter and potential bias in optical observables (e.g., richness and weak-lensing signal) of galaxy clusters. In…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-26 Radhakrishnan Srinivasan , Tae-hyeon Shin , Anja von der Linden , Ricardo Herbonnet , Matthias Klein , Tamas N. Varga , Antonio Frigo , Lindsey E. Bleem , Hao-Yi Wu , Zhuowen Zhang , Benjamin Levine , Alex Alarcon , Alexandra Amon , Matthew B. Bayliss , Keith Bechtol , Matthew Becker , Gary Bernstein , Sebastian Bocquet , Andresa Campos , Aurelio Carnero Rosell , Matias Carrasco Kind , Chihway Chang , Rebecca Chen , Ami Choi , Juan De Vicente , Joseph DeRose , Scott Dodelson , Cyrille Doux , Alex Drlica-Wagner , Jack Elvin-Poole , Spencer Everett , Agnès Ferté , Marco Gatti , Raven Gassis , Michael D. Gladders , Sebastian Grandis , Daniel Gruen , Robert Gruendl , Ian Harrison , Mike Jarvis , Niall MacCrann , Jamie McCullough , Michael A. McDonald , Justin Myles , Andres Navarro Alsina , Shivam Pandey , Judit Prat , Marco Raveri , Christian L. Reichardt , Richard Rollins , Eli Rykoff , Carles Sanchez , Arnab Sarkar , Lucas F. Secco , Ignacio Sevilla , Erin Sheldon , Taweewat Somboonpanyakul , Brian Stalder , Anthony A. Stark , Michael A. Troxel , Isaac Tutusaus , Brian Yanny , Boyan Yin , Michel Aguena , Sahar Allam , Felipe Andrade-Oliveira , David Bacon , Jonathan Blazek , David Brooks , David Burke , Ryan Camilleri , Jorge Carretero , Matteo Costanzi , Luiz da Costa , Maria Elidaiana da Silva Pereira , Shantanu Desai , H. Thomas Diehl , Juan Garcia-Bellido , Gaston Gutierrez , Samuel Hinton , Devon L. Hollowood , Sujeong Lee , Jennifer Marshall , Juan Mena-Fernández , Felipe Menanteau , Ramon Miquel , Andrés Plazas Malagón , Ricardo Ogando , Kathy Romer , Aaron Roodman , Eusebio Sanchez , David Sanchez Cid , Eric Suchyta , Molly Swanson , Noah Weaverdyck , Jochen Weller

Using detailed mock galaxy redshift surveys (MGRSs) we investigate the abundance and radial distribution of satellite galaxies. The mock surveys are constructed using the conditional luminosity function (CLF), and are compared against data…

Astrophysics · Physics 2009-11-10 Frank C. van den Bosch , Xiaohu Yang , H. J. Mo , Peder Norberg

abridged: We use a complete sample of about 140,000 galaxies from the Sloan Digital Sky Survey (SDSS) to study the size distribution of galaxies and its dependence on their luminosity, stellar mass, and morphological type. The large SDSS…