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28 papers · 2 filters
Preparing Red-Green-Blue (RGB) Images from CCD Data
Robert Lupton, Michael R. Blanton, George Fekete +4
We present a new, and we believe arguably correct, algorithm for producing Red-Green-Blue (RBG) composites from 3-band astronomical images. Our method ensures that an object with a…
Probing Primordial Non-Gaussianity with Large-Scale Structure
Roman Scoccimarro, Emiliano Sefusatti, Matias Zaldarriaga
We consider primordial non-Gaussianity due to quadratic corrections in the gravitational potential parametrized by a non-linear coupling parameter fnl. We study constraints on fnl…
Limits on Very High Energy Emission from Gamma-Ray Bursts with the Milagro Observatory
The Milagro Collaboration, R. Atkins, W. Benbow +34
The Milagro telescope monitors the northern sky for 100 GeV to 100 TeV transient emission through continuous very high energy wide-field observations. The large effective area and…
The 3D power spectrum of galaxies from the SDSS
M Tegmark, M Blanton, M Strauss +32
We measure the large-scale real-space power spectrum P(k) using a sample of 205,443 galaxies from the Sloan Digital Sky Survey, covering 2417 square degrees with mean redshift z~0.…
Relationship between environment and the broad-band optical properties of galaxies in the SDSS
M. R. Blanton, D. J. Eisenstein, D. W. Hogg +2
We examine the relationship between environment and the luminosities, surface brightnesses, colors, and profile shapes of luminous galaxies in the Sloan Digital Sky Survey (SDSS).…
Cosmological parameters from SDSS and WMAP
M. Tegmark, M. Strauss, M. Blanton +34
We measure cosmological parameters using the three-dimensional power spectrum P(k) from over 200,000 galaxies in the Sloan Digital Sky Survey (SDSS) in combination with WMAP and ot…