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View article: Euclid preparation. III. Galaxy cluster detection in the wide photometric survey, performance and algorithm selection
Euclid preparation. III. Galaxy cluster detection in the wide photometric survey, performance and algorithm selection Open
Galaxy cluster counts in bins of mass and redshift have been shown to be a competitive probe to test cosmological models. This method requires an efficient blind detection of clusters from surveys with a well-known selection function and r…
View article: <i>Euclid</i> preparation
<i>Euclid</i> preparation Open
Galaxy cluster counts in bins of mass and redshift have been shown to be a competitive probe to test cosmological models. This method requires an efficient blind detection of clusters from surveys with a well-known selection function and r…
View article: High redshift galaxies in the ALHAMBRA survey? II. Strengthening the evidence of bright-end excess in UV luminosity functions at 2.5 ≤ z ≤ 4.5 by PDF analysis
High redshift galaxies in the ALHAMBRA survey? II. Strengthening the evidence of bright-end excess in UV luminosity functions at 2.5 ≤ z ≤ 4.5 by PDF analysis Open
Context. Knowing the exact shape of the ultraviolet (UV) luminosity function (LF) of high-redshift galaxies is important to understand the star formation history of the early Universe. However, the uncertainties, especially at the faint an…
View article: The ALHAMBRA survey: tight dependence of the optical mass-to-light ratio on galaxy colour up to <i>z</i> = 1.5
The ALHAMBRA survey: tight dependence of the optical mass-to-light ratio on galaxy colour up to <i>z</i> = 1.5 Open
Aims. Our goal is to characterise the dependence of the optical mass-to-light ratio on galaxy colour up to z = 1.5, expanding the redshift range explored in previous work. Methods. From the redshifts, stellar masses, and rest-frame luminos…
View article: J-PLUS: Morphological star/galaxy classification by PDF analysis
J-PLUS: Morphological star/galaxy classification by PDF analysis Open
Aims. Our goal is to morphologically classify the sources identified in the images of the J-PLUS early data release (EDR) as compact (stars) or extended (galaxies) using a dedicated Bayesian classifier. Methods. J-PLUS sources exhibit two …
View article: High redshift galaxies in the ALHAMBRA survey
High redshift galaxies in the ALHAMBRA survey Open
Context. Knowing the exact shape of the ultraviolet (UV) luminosity function (LF) of high-redshift galaxies is important to understand the star formation history of the early Universe. However, the uncertainties, especially at the faint an…
View article: The ALHAMBRA survey: 2D analysis of the stellar populations in massive early-type galaxies at z < 0.3
The ALHAMBRA survey: 2D analysis of the stellar populations in massive early-type galaxies at z < 0.3 Open
We present a technique that permits the analysis of stellar population gradients in a relatively low-cost way compared to integral field unit (IFU) surveys. We developed a technique to analyze unresolved stellar populations of spatially re…
View article: French SKA White Book - The French Community towards the Square Kilometre Array
French SKA White Book - The French Community towards the Square Kilometre Array Open
The "Square Kilometre Array" (SKA) is a large international radio telescope project characterised, as suggested by its name, by a total collecting area of approximately one square kilometre, and consisting of several interferometric arrays…
View article: ELDAR, a new method to identify AGN in multi-filter surveys: the ALHAMBRA test case
ELDAR, a new method to identify AGN in multi-filter surveys: the ALHAMBRA test case Open
We present ELDAR, a new method that exploits the potential of medium- and narrow-band filter surveys to securely identify active galactic nuclei (AGN) and determine their redshifts. Our methodology improves on traditional approaches by loo…
View article: CLASH: accurate photometric redshifts with 14 HST bands in massive galaxy cluster cores
CLASH: accurate photometric redshifts with 14 HST bands in massive galaxy cluster cores Open
We present accurate photometric redshifts for galaxies observed by the Cluster Lensing And Supernova survey with Hubble (CLASH). CLASH observed 25 massive galaxy cluster cores with the Hubble Space Telescope in 16 filters spanning 0.2-1.7 …
View article: The <scp>XXL</scp> survey: First results and future
The <span>XXL</span> survey: First results and future Open
The XXL survey currently covers two 25 deg 2 patches with XMM observations of ∼10 ks. We summarize the scientific results associated with the first release of the XXL dataset, which occurred in mid‐2016. We review several arguments for inc…
View article: Apples to apples<i>A</i><sup>2</sup>– II. Cluster selection functions for next-generation surveys
Apples to apples<i>A</i><sup>2</sup>– II. Cluster selection functions for next-generation surveys Open
We present the cluster selection function for three of the largest next-generation stage-IV surveys in the optical and infrared: Euclid-Optimistic, Euclid-Pessimistic and the Large Synoptic Survey Telescope (LSST). To simulate these survey…
View article: A<i>K</i><sub><i>s</i></sub>-band-selected catalogue of objects in the ALHAMBRA survey
A<i>K</i><sub><i>s</i></sub>-band-selected catalogue of objects in the ALHAMBRA survey Open
The original ALHAMBRA catalogue contained over 400,000 galaxies selected\nusing a synthetic F814W image, to the magnitude limit AB(F814W)$\\approx$24.5.\nGiven the photometric redshift depth of the ALHAMBRA multiband data (=0.86)\nand the …
View article: Next generation cosmology: constraints from the<i>Euclid</i>galaxy cluster survey
Next generation cosmology: constraints from the<i>Euclid</i>galaxy cluster survey Open
We study the characteristics of the galaxy cluster samples expected from the\nEuropean Space Agency's Euclid satellite and forecast constraints on\ncosmological parameters describing a variety of cosmological models. The method\nused in th…
View article: THE ALHAMBRA SURVEY: EVOLUTION OF GALAXY SPECTRAL SEGREGATION
THE ALHAMBRA SURVEY: EVOLUTION OF GALAXY SPECTRAL SEGREGATION Open
We study the clustering of galaxies as a function of spectral type and redshift in the range 0.35 < z < 1.1 using data from the Advanced Large Homogeneous Area Medium Band Redshift Astronomical (ALHAMBRA) survey. The data cover 2.381 deg 2…
View article: An accurate cluster selection function for the J-PAS narrow-band wide-field survey
An accurate cluster selection function for the J-PAS narrow-band wide-field survey Open
The impending Javalambre Physics of the accelerating Universe Astrophysical Survey (J-PAS) will be the first wide-field survey of ≳ 8500 deg^2 to reach the ‘stage IV’ category. Because of the redshift resolution afforded by 54 narrow-band …