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Related papers: A public void catalog from the SDSS DR7 Galaxy Red…

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A galaxy group catalog is constructed from the 2MASS Redshift Survey (2MRS) with the use of a halo-based group finder. The halo mass associated with a group is estimated using a `GAP' method based on the luminosity of the central galaxy and…

Astrophysics of Galaxies · Physics 2016-11-23 Yi Lu , Xiaohu Yang , Feng Shi , H. J. Mo , Dylan Tweed , Huiyuan Wang , Youcai Zhang , Shijie Li , S. H. Lim

We present a catalog of 1,172,157 quasar candidates selected from the photometric imaging data of the Sloan Digital Sky Survey (SDSS). The objects are all point sources to a limiting magnitude of i=21.3 from 8417 sq. deg. of imaging from…

We construct a galaxy groups catalogue from the public 100K data release of the 2dF galaxy redshift survey. The group identification is carried out using a slightly modified version of the group finding algorithm developed by Huchra &…

Astrophysics · Physics 2009-11-07 Manuel Merchan , Ariel Zandivarez

We present here the VO access to the results of an analysis of the spectra of Sloan Digital Sky Survey (SDSS) galaxies performed with the STARLIGHT code by Cid Fernandes et al. (2005). The results include for each galaxy the original SDSS…

We present RCSED, the value-added Reference Catalog of Spectral Energy Distributions of galaxies, which contains homogenized spectrophotometric data for 800,299 low and intermediate redshift galaxies (0.007<z<0.6) selected from the Sloan…

Astrophysics of Galaxies · Physics 2017-02-15 Igor Chilingarian , Ivan Zolotukhin , Ivan Katkov , Anne-Laure Melchior , Evgeniy Rubtsov , Kirill Grishin

The DEEP2 project will obtain redshifts for ~60,000 galaxies between z~0.7-1.5 in a comoving volume of 7 10^6 Mpc/h^3 for an LCDM universe. The survey will map four separate 2 by 0.5 degree strips of the sky. To study the expected…

Astrophysics · Physics 2009-11-07 Alison L. Coil , Marc Davis , Istvan Szapudi

We apply a friends-of-friends algorithm to an enhanced SDSS DR12 spectroscopic catalog including redshift from literature to construct a catalog of $1588~N\ge3$ compact groups of galaxies containing 5179 member galaxies and covering the…

Astrophysics of Galaxies · Physics 2016-08-17 Jubee Sohn , Margaret J. Geller , Ho Seong Hwang , H. Jabran Zahid , Myung Gyoon Lee

We have developed a new geometrical method for identifying and reconstructing a homogeneous and highly complete set of galaxy groups in the next generation of deep, flux-limited redshift surveys. Our method combines information from the…

Astrophysics · Physics 2009-11-07 Christian Marinoni , Marc Davis , Jeffrey A. Newman , Alison L. Coil

We present predictions for numerous statistics related to the presence of voids in the distribution of galaxies in a cold dark matter model of structure formation using a semi-analytic model of galaxy formation. Our study is able to probe…

Astrophysics · Physics 2009-11-07 A. J. Benson , Fiona Hoyle , Fernando Torres , Michael S. Vogeley

We present a novel parameter-free cosmological void finder (\textsc{dive}, Delaunay TrIangulation Void findEr) based on Delaunay Triangulation (DT), which efficiently computes the empty spheres constrained by a discrete set of tracers. We…

Cosmology and Nongalactic Astrophysics · Physics 2016-04-06 Cheng Zhao , Charling Tao , Yu Liang , Francisco-Shu Kitaura , Chia-Hsun Chuang

Using the VOID FINDER algorithm we have compiled a catalogue of voids in the IRAS 1.2-Jy sample. The positions of the voids correspond well to underdense regions seen in the IRAS smoothed density map. However, since in our analysis no…

Astrophysics · Physics 2015-06-24 Hagai El-Ad , Tsvi Piran , Luiz Nicolaci da Costa

Using the newly available infrared images of the Hubble Deep Field in the J, H, and K bands and an optimal photometric method, we have refined a technique to estimate the redshifts of 1067 galaxies. A detailed comparison of our results with…

Astrophysics · Physics 2009-10-30 A. Fernandez-Soto , K. M. Lanzetta , A. Yahil

We have analysed the distribution of galaxies in groups identified in the largest redshift surveys at the present: the final release of the 2dF Galaxy Redshift Survey and the first release of the Sloan Digital Sky Survey. Our work comprises…

Astrophysics · Physics 2009-11-11 Eugenia Diaz , Ariel Zandivarez , Manuel Merchan , Hernan Muriel

Various aspects of cosmology require comprehensive all-sky mapping of the cosmic web to considerable depths. In order to probe the whole extragalactic sky beyond 100 Mpc, one must draw on multiwavelength datasets and state-of-the-art…

Cosmology and Nongalactic Astrophysics · Physics 2015-12-17 Maciej Bilicki

Recent large-scale galaxy spectroscopic surveys, such as the Sloan Digital Sky Survey (SDSS), enable us to execute a systematic, relatively-unbiased search for galaxy clusters. Such surveys make it possible to measure the 3-d distribution…

Astrophysics · Physics 2009-11-13 Joo H. Yoon , Kevin Schawinski , Yun-Kyeong Sheen , Chang H. Ree , Sukyoung K. Yi

We present mock JWST observations for more than 250,000 different galaxies from the Astrid simulation with $3 \leq z \leq 6$. The mock observations are made using the BPASS stellar SED model, and a simple dust model. They are then viewed…

Astrophysics of Galaxies · Physics 2025-02-28 Patrick LaChance , Rupert Croft , Yueying Ni , Nianyi Chen , Tiziana Di Matteo , Simeon Bird

We present a modified adaptive matched filter algorithm designed to identify clusters of galaxies in wide-field imaging surveys such as the Sloan Digital Sky Survey. The cluster-finding technique is fully adaptive to imaging surveys with…

Astrophysics · Physics 2009-11-13 Feng Dong , Elena Pierpaoli , James E. Gunn , Risa H. Wechsler

We investigate the structural, photometric, and dynamical evolution of cosmic voids and their galaxy populations from $z=2.09$ to the present, focusing on void size as a key evolutionary parameter. Using void catalogs from four Millennium…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-28 Saeed Tavasoli