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Jean-Paul Richard Kneib

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Related publications (228)

The Sdss-Iv Extended Baryon Oscillation Spectroscopic Survey: Luminous Red Galaxy Target Selection

Johan Comparat, Jean-Paul Richard Kneib, Timothée Guy Olivier Delubac, David Schlegel

We describe the algorithm used to select the luminous red galaxy (LRG) sample for the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (SDSS-IV) using photometric data from both the SDSS and the Wide-field Infrare ...

Iop Publishing Ltd2016

Systematic or signal? How dark matter misalignments can bias strong lensing models of galaxy clusters

Jean-Paul Richard Kneib, David Richard Harvey, Mathilde Jauzac

We explore how assuming that mass traces light in strong gravitational lensing models can lead to systematic errors in the predicted position of multiple images. Using a model based on the galaxy cluster MACS J0416 (z = 0.397) from the Hubble Frontier Fiel ...

Oxford Univ Press2016

Weak-lensing mass calibration of the Atacama Cosmology Telescope equatorial Sunyaev-Zeldovich cluster sample with the Canada-France-Hawaii telescope stripe 82 survey

Jean-Paul Richard Kneib, Huanyuan Shan

Mass calibration uncertainty is the largest systematic effect for using clusters of galaxies to constrain cosmological parameters. We present weak lensing mass measurements from the Canada-France-Hawaii Telescope Stripe 82 Survey for galaxy clusters select ...

Iop Publishing Ltd2016

The evolution of the [O II], H beta and [O III] emission line luminosity functions over the last nine billions years

Johan Richard, Johan Comparat, Jeffrey Newman, Jean-Paul Richard Kneib, Timothée Guy Olivier Delubac, Anand Stéphane Raichoor

Emission line galaxies are one of the main tracers of the large-scale structure to be targeted by the next-generation dark energy surveys. To provide a better understanding of the properties and statistics of these galaxies, we have collected spectroscopic ...

Oxford Univ Press2016

Strong-lensing analysis of MACSJ0717.5+3745 from Hubble Frontier Fields observations: How well can the mass distribution be constrained?

Johan Richard, Jean-Paul Richard Kneib, Hakim Atek, Markus Rexroth, Mathilde Jauzac, Benjamin Yvan Alexandre Clement

We present a strong-lensing analysis of MACSJ0717.5+3745 (hereafter MACS J0717), based on the full depth of the Hubble Frontier Field (HFF) observations, which brings the number of multiply imaged systems to 61, ten of which have been spectroscopically con ...

Edp Sciences S A2016

[C II] emission in z similar to 6 strongly lensed, star-forming galaxies

Johan Richard, Jean-Paul Richard Kneib, Mathilde Jauzac, Benjamin Yvan Alexandre Clement

The far-infrared fine-structure line [C II] at 1900.5 GHz is known to be one of the brightest cooling lines in local galaxies, and therefore it has been suggested to be an efficient tracer for star formation in very high redshift galaxies. However, recent ...

Oxford Univ Press2016

ASTErIsM: application of topometric clustering algorithms in automatic galaxy detection and classification

Frédéric Courbin, Jean-Paul Richard Kneib, Danuta Janina Paraficz

We present a study on galaxy detection and shape classification using topometric clustering algorithms. We first use the DBSCAN algorithm to extract, from CCD frames, groups of adjacent pixels with significant fluxes and we then apply the DENCLUE algorithm ...

Oxford Univ Press2016

MultiDarkLens Simulations: weak lensing light-cones and data base presentation

Johan Comparat, Jean-Paul Richard Kneib, Huanyuan Shan

In this paper we present a large data base of weak lensing light cones constructed using different snapshots from the Big MultiDark simulation (BigMDPL). The ray-tracing through different multiple plane has been performed with the GLAMER code accounting bo ...

Oxford Univ Press2016

High-redshift supernova rates measured with the gravitational telescope A 1689

Johan Richard, Jean-Paul Richard Kneib

Aims. We present a ground-based, near-infrared search for lensed supernovae behind the massive cluster Abell 1689 at z = 0.18, which is one of the most powerful gravitational telescopes that nature provides. Methods. Our survey was based on multi-epoch J-b ...

Edp Sciences S A2016

The DESI fiber positioner system

Philipp Hörler, Jean-Paul Richard Kneib

The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the Universe using the baryon acoustic oscillation technique. A new prime focus corrector for the KPNO Mayall telescope will deliver light to 5,000 fi ...

Spie-Int Soc Optical Engineering2016

Target-based fiber assignment for large survey spectrographs

Laleh Makarem, Christoph Ernst René Schäfer, Jean-Paul Richard Kneib

Next generation massive spectroscopic survey projects have to process a massive amount of targets. The preparation of subsequent observations should be feasible in a reasonable amount of time. We present a fast algorithm for target assignment that scales a ...

Spie-Int Soc Optical Engineering2016

SPIDERS: the spectroscopic follow-up of X-ray-selected clusters of galaxies in SDSS-IV

Jean-Paul Richard Kneib

SPIDERS (The SPectroscopic IDentification of eROSITA Sources) is a programme dedicated to the homogeneous and complete spectroscopic follow-up of X-ray active galactic nuclei and galaxy clusters over a large area (similar to 7500 deg(2)) of the extragalact ...

Oxford Univ Press2016

The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: selecting emission line galaxies using the Fisher discriminant

Johan Comparat, Xiaoqing Zhou, Jean-Paul Richard Kneib, Timothée Guy Olivier Delubac, Jian Wang, Anand Stéphane Raichoor, Zhe Jiang

We present a new selection technique of producing spectroscopic target catalogues for massive spectroscopic surveys for cosmology. This work was conducted in the context of the extended Baryon Oscillation Spectroscopic Survey (eBOSS), which will use simila ...

Edp Sciences S A2016

Clustering properties of g-selected galaxies at z similar to 0.8

Johan Comparat, Jean-Paul Richard Kneib, Timothée Guy Olivier Delubac, David Schlegel, Ginevra Favole

Current and future large redshift surveys, as the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) or the Dark Energy Spectroscopic Instrument (DESI), will use emission-line galaxies (ELGs) to probe cosmological ...

Wiley-Blackwell2016

The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast

Johan Comparat, Jean-Paul Richard Kneib, Timothée Guy Olivier Delubac, Yuting Wang, Hanyu Zhang

We present a science forecast for the extended Baryon Oscillation Spectroscopic Survey (eBOSS) survey. Focusing on discrete tracers, we forecast the expected accuracy of the baryonic acoustic oscillation (BAO), the redshift-space distortion (RSD) measureme ...

Oxford Univ Press2016

A complete census of Herschel-detected infrared sources within the HST Frontier Fields

Johan Richard, Jean-Paul Richard Kneib, Benjamin Yvan Alexandre Clement

We present a complete census of all Herschel-detected sources within the six massive lensing clusters of the HST Frontier Fields (HFF). We provide a robust legacy catalogue of 263 sources with Herschel fluxes, primarily based on imaging from the Herschel L ...

Wiley-Blackwell2016

SDSS-IV eBOSS emission-line galaxy pilot survey

Eduardo Sanchez, Johan Comparat, Jean-Paul Richard Kneib, Zhirui Xu, Timothée Guy Olivier Delubac, Yi Zhang, Anand Stéphane Raichoor, David Schlegel

The Sloan Digital Sky Survey IV extended Baryonic Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) will observe 195 000 emission-line galaxies (ELGs) to measure the baryonic acoustic oscillation (BAO) standard ruler at redshift 0.9. To test different ELG s ...

Edp Sciences S A2016

The extraordinary amount of substructure in the Hubble Frontier Fields cluster Abell 2744

Johan Richard, Céline Tchernin, Jean-Paul Richard Kneib, Huanyuan Shan, Hakim Atek, Richard Massey, Markus Rexroth, David Richard Harvey, Mathilde Jauzac, Benjamin Yvan Alexandre Clement

We present a joint optical/X-ray analysis of the massive galaxy cluster Abell 2744 (z = 0.308). Our strong- and weak-lensing analysis within the central region of the cluster, i.e. at R < 1 Mpc from the brightest cluster galaxy, reveals eight substructures ...

Oxford Univ Press2016

Measuring subhalo mass in redMaPPer clusters with CFHT Stripe 82 Survey

Jean-Paul Richard Kneib, Huanyuan Shan

We use the shear catalogue from the CFHT Stripe-82 Survey to measure the subhalo masses of satellite galaxies in redMaPPer clusters. Assuming a Chabrier initial mass function and a truncated NFW model for the subhalo mass distribution, we find that the sub ...

Oxford Univ Press2016

Strong lensing in the inner halo of galaxy clusters

Jean-Paul Richard Kneib

We present an axially symmetric formula to calculate the probability of finding gravitational arcs in galaxy clusters, being induced by their massive dark matter haloes, as a function of clusters redshifts and virial masses. The formula includes the ellipt ...

Oxford Univ Press2016

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