On the halo-mass and radial scale dependence of the lensing is low effect

no code implementations • 4 Nov 2020 • Johannes U. Lange, Alexie Leauthaud, Sukhdeep Singh, Hong Guo, Rongpu Zhou, Tristan L. Smith, Francis-Yan Cyr-Racine

It has been shown that the lensing amplitude of galaxies in the Baryon Oscillation Spectroscopic Survey (BOSS) is lower than expected given their clustering properties.

Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies

Illuminating Low-Surface-Brightness Galaxies with the Hyper Suprime-Cam Survey

2 code implementations • 13 Sep 2017 • Johnny P. Greco, Jenny E. Greene, Michael A. Strauss, Lauren A. MacArthur, Xzavier Flowers, Andy D. Goulding, Song Huang, Ji Hoon Kim, Yutaka Komiyama, Alexie Leauthaud, Lukas Leisman, Robert H. Lupton, Cristóbal Sifón, Shiang-Yu Wang

We define LSBGs to have mean surface brightnesses $\bar{\mu}_\mathrm{eff}(g)>24. 3$ mag arcsec$^{-2}$, which allows nucleated galaxies into our sample.

Astrophysics of Galaxies

Forward Modeling of Large-Scale Structure: An open-source approach with Halotools

2 code implementations • 13 Jun 2016 • Andrew Hearin, Duncan Campbell, Erik Tollerud, Peter Behroozi, Benedikt Diemer, Nathan J. Goldbaum, Elise Jennings, Alexie Leauthaud, Yao-Yuan Mao, Surhud More, John Parejko, Manodeep Sinha, Brigitta Sipocz, Andrew Zentner

We present the first stable release of Halotools (v0. 2), a community-driven Python package designed to build and test models of the galaxy-halo connection.

Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies

SDSS-III Baryon Oscillation Spectroscopic Survey Data Release 12: galaxy target selection and large scale structure catalogues

no code implementations • 22 Sep 2015 • Beth Reid, Shirley Ho, Nikhil Padmanabhan, Will J. Percival, Jeremy Tinker, Rita Tojeiro, Martin White, Daniel J. Eisenstein, Claudia Maraston, Ashley J. Ross, Ariel G. Sanchez, David Schlegel, Erin Sheldon, Michael A. Strauss, Daniel Thomas, David Wake, Florian Beutler, Dmitry Bizyaev, Adam S. Bolton, Joel R. Brownstein, Chia-Hsun Chuang, Kyle Dawson, Paul Harding, Francisco-Shu Kitaura, Alexie Leauthaud, Karen Masters, Cameron K. McBride, Surhud More, Matthew D. Olmstead, Daniel Oravetz, Sebastian E. Nuza, Kaike Pan, John Parejko, Janine Pforr, Francisco Prada, Sergio Rodriguez-Torres, Salvador Salazar-Albornoz, Lado Samushia, Donald P. Schneider, Claudia G. Scoccola, Audrey Simmons, Mariana Vargas-Magana

We also present the algorithms used to create large scale structure catalogues for the final Data Release (DR12) samples and the associated random catalogues that quantify the survey mask.

Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies

The Stability of the Point Spread Function of the Advanced Camera for Surveys on the Hubble Space Telescope and Implications for Weak Gravitational Lensing

no code implementations • 6 Feb 2007 • Jason D. Rhodes, Richard Massey, Justin Albert, Nicholas Collins, Richard S. Ellis, Catherine Heymans, Jonathan P. Gardner, Jean-Paul Kneib, Anton Koekemoer, Alexie Leauthaud, Yannick Mellier, Alexandre Refregier, James E. Taylor, Ludovic van Waerbeke

We derive a parametric correction for the effect of CTE on the shapes of objects in the COSMOS field as a function of observation date, position within the ACS WFC field, and object flux.