scholarly journals Information Content in the Galaxy Angular Power Spectrum from the Sloan Digital Sky Survey and Its Implication on Weak-Lensing Analysis

2008 ◽  
Vol 686 (1) ◽  
pp. L1-L4 ◽  
Author(s):  
Jounghun Lee ◽  
Ue-Li Pen
Keyword(s):  
Power Spectrum ◽  
Information Content ◽  
Sloan Digital Sky Survey ◽  
Weak Lensing ◽  
Angular Power Spectrum ◽  
Sky Survey ◽  
The Galaxy

scholarly journals The Angular Power Spectrum of Galaxies from Early Sloan Digital Sky Survey Data

2002 ◽  
Vol 571 (1) ◽  
pp. 191-205 ◽  
Author(s):  
Max Tegmark ◽  
Scott Dodelson ◽  
Daniel J. Eisenstein ◽  
Vijay Narayanan ◽  
Roman Scoccimarro ◽  
...  
Keyword(s):  
Power Spectrum ◽  
Survey Data ◽  
Sloan Digital Sky Survey ◽  
Angular Power Spectrum ◽  
Sky Survey

scholarly journals The Sloan Digital Sky Survey Data Release 7 galaxy angular power spectrum

2012 ◽  
Vol 421 (3) ◽  
pp. 2043-2053 ◽  
Author(s):  
Brett Hayes ◽  
Robert Brunner ◽  
Ashley Ross
Keyword(s):  
Power Spectrum ◽  
Survey Data ◽  
Sloan Digital Sky Survey ◽  
Angular Power Spectrum ◽  
Sky Survey ◽  
Data Release

scholarly journals KiDS+GAMA: Intrinsic alignment model constraints for current and future weak lensing cosmology

2019 ◽  
Vol 624 ◽  
pp. A30 ◽  
Author(s):  
Harry Johnston ◽  
Christos Georgiou ◽  
Benjamin Joachimi ◽  
Henk Hoekstra ◽  
Nora Elisa Chisari ◽  
...  
Keyword(s):  
Sloan Digital Sky Survey ◽  
Weak Lensing ◽  
Satellite Galaxy ◽  
Sky Survey ◽  
The Galaxy ◽  
Resolution Imaging ◽  
Cosmic Shear ◽  
Linear Alignment ◽  
Red Galaxies ◽  
Blue Galaxy

We directly constrain the non-linear alignment (NLA) model of intrinsic galaxy alignments, analysing the most representative and complete flux-limited sample of spectroscopic galaxies available for cosmic shear surveys. We measure the projected galaxy position-intrinsic shear correlations and the projected galaxy clustering signal using high-resolution imaging from the Kilo Degree Survey (KiDS) overlapping with the GAMA spectroscopic survey, and data from the Sloan Digital Sky Survey. Separating samples by colour, we make no significant detection of blue galaxy alignments, constraining the blue galaxy NLA amplitude AIAB = 0.21−0.36+0.37 to be consistent with zero. We make robust detections (∼9σ) for red galaxies, with AIAR = 3.18−0.46+0.47, corresponding to a net radial alignment with the galaxy density field, and we find no evidence for any scaling of alignments with galaxy luminosity. We provide informative priors for current and future weak lensing surveys, an improvement over de facto wide priors that allow for unrealistic levels of intrinsic alignment contamination. For a colour-split cosmic shear analysis of the final KiDS survey area, we forecast that our priors will improve the constraining power on S8 and the dark energy equation of state w0, by up to 62% and 51%, respectively. Our results indicate, however, that the modelling of red/blue-split galaxy alignments may be insufficient to describe samples with variable central/satellite galaxy fractions.

scholarly journals The Galaxy-Mass Correlation Function Measured from Weak Lensing in the Sloan Digital Sky Survey

2004 ◽  
Vol 127 (5) ◽  
pp. 2544-2564 ◽  
Author(s):  
Erin S. Sheldon ◽  
David E. Johnston ◽  
Joshua A. Frieman ◽  
Ryan Scranton ◽  
Timothy A. McKay ◽  
...  
Keyword(s):  
Correlation Function ◽  
Sloan Digital Sky Survey ◽  
Weak Lensing ◽  
Sky Survey ◽  
The Galaxy

scholarly journals Estimating the large-scale angular power spectrum in the presence of systematics: a case study of Sloan Digital Sky Survey quasars

2013 ◽  
Vol 435 (3) ◽  
pp. 1857-1873 ◽  
Author(s):  
Boris Leistedt ◽  
Hiranya V. Peiris ◽  
Daniel J. Mortlock ◽  
Aurélien Benoit-Lévy ◽  
Andrew Pontzen
Keyword(s):  
Power Spectrum ◽  
Large Scale ◽  
Sloan Digital Sky Survey ◽  
Angular Power Spectrum ◽  
Sky Survey

scholarly journals Weak Lensing with Sloan Digital Sky Survey Commissioning Data: The Galaxy-Mass Correlation Function to 1 [CLC][ITAL]h[/ITAL][/CLC][TSUP]−1[/TSUP] M[CLC]pc[/CLC]

2000 ◽  
Vol 120 (3) ◽  
pp. 1198-1208 ◽  
Author(s):  
Philippe Fischer ◽  
Timothy A. McKay ◽  
Erin Sheldon ◽  
Andrew Connolly ◽  
Albert Stebbins ◽  
...  
Keyword(s):  
Correlation Function ◽  
Sloan Digital Sky Survey ◽  
Weak Lensing ◽  
Sky Survey ◽  
The Galaxy

scholarly journals Information content in the angular power spectrum of weak lensing: wavelet method

2011 ◽  
pp. no-no ◽  
Author(s):  
Hao-Ran Yu ◽  
Joachim Harnois-Déraps ◽  
Tong-Jie Zhang ◽  
Ue-Li Pen
Keyword(s):  
Power Spectrum ◽  
Information Content ◽  
Weak Lensing ◽  
Wavelet Method ◽  
Angular Power Spectrum

scholarly journals Searching for Mg ii absorbers in and around galaxy clusters

2021 ◽  
Vol 503 (3) ◽  
pp. 4309-4319
Author(s):  
Jong Chul Lee ◽  
Ho Seong Hwang ◽  
Hyunmi Song
Keyword(s):  
Galaxy Clusters ◽  
Detection Rate ◽  
Massive Star ◽  
Sloan Digital Sky Survey ◽  
Number Density ◽  
Cluster Galaxies ◽  
Star Forming ◽  
Quasar Spectra ◽  
Sky Survey ◽  
The Galaxy

ABSTRACT To study environmental effects on the circumgalactic medium (CGM), we use the samples of redMaPPer galaxy clusters, background quasars, and cluster galaxies from the Sloan Digital Sky Survey (SDSS). With ∼82 000 quasar spectra, we detect 197 Mg ii absorbers in and around the clusters. The detection rate per quasar is 2.7 ± 0.7 times higher inside the clusters than outside the clusters, indicating that Mg ii absorbers are relatively abundant in clusters. However, when considering the galaxy number density, the absorber-to-galaxy ratio is rather low inside the clusters. If we assume that Mg ii absorbers are mainly contributed by the CGM of massive star-forming galaxies, a typical halo size of cluster galaxies is smaller than that of field galaxies by 30 ± 10 per cent. This finding supports that galaxy haloes can be truncated by interaction with the host cluster.

scholarly journals Karhunen‐Loeve Estimation of the Power Spectrum Parameters from the Angular Distribution of Galaxies in Early Sloan Digital Sky Survey Data

2003 ◽  
Vol 591 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Alexander S. Szalay ◽  
Bhuvnesh Jain ◽  
Takahiko Matsubara ◽  
Ryan Scranton ◽  
Michael S. Vogeley ◽  
...  
Keyword(s):  
Angular Distribution ◽  
Power Spectrum ◽  
Survey Data ◽  
Sloan Digital Sky Survey ◽  
Sky Survey
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