English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present the first study of the evolution of the galaxy luminosity andstellar-mass functions (GLF and GSMF) carried out by the Dark Energy Survey(DES). We describe the COMMODORE galaxy catalogue selected from ScienceVerification images. This catalogue is made of $\sim 4\times 10^{6}$ galaxiesat $0<z\lesssim1.3$ over a sky area of $\sim155\ {\rm sq. \ deg}$ with ${\iti}$-band limiting magnitude ${\it i}=23\ {\rm mag}$. Such characteristics areunprecedented for galaxy catalogues and they enable us to study the evolutionof GLF and GSMF at $0<z<1$ homogeneously with the same statistically-richdata-set and free of cosmic variance effects. The aim of this study is twofold:i) we want to test our method based on the use of photometric-redshiftprobability density functions against literature results obtained withspectroscopic redshifts; ii) we want to shed light on the way galaxies build uptheir masses over cosmic time. We find that both the ${\it i}$-band galaxyluminosity and stellar mass functions are characterised by a double-Schechtershape at $z<0.2$. Both functions agree well with those based on spectroscopicredshifts. The DES GSMF agrees especially with those measured for the GAlaxyMass Assembly and the PRism MUlti-object Survey out to $z\sim1$. At $0.2<z<1$,we find the ${\it i}$-band luminosity and stellar-mass densities respectivelyto be constant ($\rho_{\rm L}\propto (1+z)^{-0.12\pm0.11}$) and decreasing($\rho_{\rm Mstar}\propto (1+z)^{-0.5\pm0.1}$) with $z$. This indicates that,while at higher redshift galaxies have less stellar mass, their luminosities donot change substantially because of their younger and brighter stellarpopulations. Finally, we also find evidence for a top-down mass-dependentevolution of the GSMF.

Evolution of Galaxy Luminosity and Stellar-Mass Functions since $z=1$ with the Dark Energy Survey Science Verification Data