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161 research outcomes, page 1 of 17
  • publication . Preprint . Article . 2017
    Open Access English
    Authors:
    A. Benoit-Lévy; Joshua A. Frieman; G. Tarle; Juliana Kwan; Kevin Reil; Enrique Gaztañaga; V. Scarpine; K. Honscheid; Jennifer L. Marshall; A. Roodman; ...
    Project: NSF | Collaborative Research: T... (1138766), EC | COSMIC LENS (681431), EC | COSMICDAWN (306478), EC | COGS (240672), EC | TESTDE (291329)

    We present a measurement of galaxy-galaxy lensing around a magnitude-limited ($i_{AB} < 22.5$) sample of galaxies from the Dark Energy Survey Science Verification (DES-SV) data. We split these lenses into three photometric-redshift bins from 0.2 to 0.8, and determine th...

  • publication . Article . Other literature type . Preprint . 2018
    Open Access English
    Authors:
    A. A. Plazas; Michael Troxel; P. Vielzeuf; Joe Zuntz; Elisabeth Krause; Michael T. Busha; Rafe Schindler; A. G. Kim; David W. Gerdes; Sahar S. Allam; ...
    Publisher: HAL CCSD
    Project: NSF | Collaborative Research: T... (1138766), EC | COGS (240672), EC | COSMIC LENS (681431), EC | COSMICDAWN (306478), EC | TESTDE (291329)

    We describe the derivation and validation of redshift distribution estimates and their uncertainties for the galaxies used as weak lensing sources in the Dark Energy Survey (DES) Year 1 cosmological analyses. The Bayesian Photometric Redshift (BPZ) code is used to assig...

  • publication . Article . Research . Other literature type . Preprint . 2017
    Open Access English
    Authors:
    F. Sobreira; B. Flaugher; M. Carrasco Kind; Jochen Weller; Felipe Menanteau; C. Sanchez; Enrique Gaztañaga; C. Krawiec; P. Vielzeuf; E. M. Huff; ...
    Project: EC | COGS (240672), NSF | Collaborative Research: T... (1138766), EC | COSMIC LENS (681431), EC | COSMICDAWN (306478), EC | TESTDE (291329)

    We use 26 million galaxies from the Dark Energy Survey (DES) Year 1 shape catalogs over 1321 deg$^2$ of the sky to produce the most significant measurement of cosmic shear in a galaxy survey to date. We constrain cosmological parameters in both the flat $\Lambda$CDM and...

  • publication . Article . Preprint . Other literature type . 2019
    Open Access
    Authors:
    T. de Haan; T. de Haan; Felipe Menanteau; Erin S. Sheldon; G. Tarle; Joe Zuntz; Enrique Gaztañaga; Stephen Padin; Jennifer L. Marshall; Molly E. C. Swanson; ...
    Publisher: eScholarship, University of California
    Project: EC | COSMICDAWN (306478), NSF | Collaborative Research: T... (1138766), EC | TESTDE (291329), EC | COGS (240672)

    Correlations between tracers of the matter density field and gravitational lensing are sensitive to the evolution of the matter power spectrum and the expansion rate across cosmic time. Appropriately defined ratios of such correlation functions, on the other hand, depen...

  • publication . Article . Other literature type . Preprint . 2018
    Open Access English
    Authors:
    Christopher S. Kochanek; M. Banerji; Brad E. Tucker; G. Tarle; A. A. Plazas; K. Honscheid; N. E. Sommer; C. Lidman; Christopher P. Davis; C. B. D'Andrea; ...
    Publisher: HAL CCSD
    Project: NSF | Collaborative Research: T... (1138766), EC | COGS (240672), EC | COSMICDAWN (306478), EC | TESTDE (291329)

    We present accretion disk size measurements for 15 luminous quasars at $0.7 \leq z \leq 1.9$ derived from $griz$ light curves from the Dark Energy Survey. We measure the disk sizes with continuum reverberation mapping using two methods, both of which are derived from th...

  • publication . Article . Research . Preprint . Other literature type . 2019
    Open Access English
    Authors:
    S. Avila; M. March; Peter Melchior; Richard G. McMahon; Christopher D. Fassnacht; Joshua A. Frieman; Joshua A. Frieman; Paul L. Schechter; D. Brooks; S. Desai; ...
    Publisher: HAL CCSD
    Project: NSF | Collaborative Research: T... (1138766), SNSF | Ertragsbildung bei Getrei... (3100-005896), EC | COGS (240672), SNSF | COSMOGRAIL: Cosmology wit... (200020_172712), EC | COSMICDAWN (306478), EC | TESTDE (291329)

    Comment: 22 pages, 9 figures, 8 tables, Accepted to MNRAS. This version: updated Table 4 from the erratum

  • publication . Article . Research . Preprint . Other literature type . 2017
    Open Access
    Authors:
    M. Banerji; Ofer Lahav; Daniel Gruen; M. D. Johnson; Robert C. Smith; P. Fosalba; T. M. C. Abbott; R. Rosenfeld; Marcos Lima; Daniel Thomas; ...
    Project: NSF | Collaborative Research: T... (1138766), EC | COGS (240672), EC | COSMICDAWN (306478), EC | TESTDE (291329)

    We present angular diameter distance measurements obtained by locating the BAO scale in the distribution of galaxies selected from the first year of Dark Energy Survey data. We consider a sample of over 1.3 million galaxies distributed over a footprint of 1318 deg$^2$ w...

  • publication . Article . Other literature type . Preprint . 2018
    Open Access English
    Authors:
    Pablo Fosalba; E. Bertin; Tim Eifler; Brian Yanny; M. Carrasco Kind; M. Carrasco Kind; Terese T. Hansen; Ting Li; Christopher P. Davis; Robert C. Smith; ...
    Project: EC | CLUSTERS (335936), NSF | Collaborative Research: T... (1138766), EC | COGS (240672), EC | TESTDE (291329), EC | COSMICDAWN (306478)

    Reproduced with permission of AAS We present chemical abundance measurements of three stars in the ultrafaint dwarf galaxy Horologium I, a Milky Way satellite discovered by the Dark Energy Survey. Using high-resolution spectroscopic observations, we measure the metallic...

  • publication . Article . Preprint . Other literature type . 2018
    Open Access English
    Authors:
    S. Avila; M. March; E. Suchyta; H. T. Diehl; Ting Li; Ting Li; W. G. Hartley; W. G. Hartley; D. L. Hollowood; C. L. Chang; ...
    Project: NSF | Collaborative Research: T... (1138766), EC | TESTDE (291329), EC | COGS (240672), EC | COSMICDAWN (306478)

    Comment: 7 pages, 2 figures; matches accepted version

  • publication . Article . Research . Preprint . Other literature type . 2019
    Open Access English
    Authors:
    M. A. G. Maia; D. L. Burke; D. L. Burke; Daniel Thomas; Rafe Schindler; Santiago Avila; M. March; Tamara M. Davis; Michael Schubnell; Marcos Lima; ...
    Publisher: HAL CCSD
    Project: NSF | Collaborative Research: T... (1138766), EC | TESTDE (291329), EC | COSMICDAWN (306478), EC | COGS (240672)

    We present a new Bayesian hierarchical model (BHM) named Steve for performing type Ia supernova (SNIa) cosmology fits. This advances previous works by including an improved treatment of Malmquist bias, accounting for additional sources of systematic uncertainty, and inc...

161 research outcomes, page 1 of 17