Volume 645, January 2021
|Number of page(s)||15|
|Section||Cosmology (including clusters of galaxies)|
|Published online||21 December 2020|
AMICO galaxy clusters in KiDS-DR3: Evolution of the luminosity function between z = 0.1 and z = 0.8
I.N.A.F., Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, Napoli 80131, Italy
2 I.N.A.F., Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, Padova, 35122, Italy
3 I.N.A.F., Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Gobetti 93/3, 40129 Bologna, Italy
4 Dipartimento di Fisica e Astronomia, Alma Mater Studiorum Università di Bologna, Via Gobetti 93/2, 40129 Bologna, Italy
5 Zentrum für Astronomie, Universität Heidelberg, Philosophenweg 12, 69120 Heidelberg, Germany
6 ITP, Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany
7 I.N.F.N. – Sezione di Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy
Accepted: 26 October 2020
Aims. By means of the r-band luminosity function (LF) of galaxies in a sample of about 4000 clusters detected by the cluster finder AMICO in the KiDS-DR3 area of about 400 deg2, we studied the evolution with richness and redshift of the passive evolving (red), star-forming (blue), and total galaxy populations. This analysis was performed for clusters in the redshift range [0.1, 0.8] and in the mass range [1013 M⊙, 1015 M⊙].
Methods. To compute LFs, we binned the luminosity distribution in magnitude and statistically subtracted the background. Then, we divided the cluster sample in bins of both redshift and richness/mass. We stacked LF counts in each 2D bin for the total, red, and blue galaxy populations; finally, we fitted the stacked LF with a Schechter function and studied the trend of its parameters with redshift and richness/mass.
Results. We found a passive evolution with z for the bright part of the LF for the red and total populations and no significant trends for the faint galaxies. The mass/richness dependence is clear for the density parameter Φ⋆, increasing with richness, and for the total population faint end, which is shallower in the rich clusters.
Key words: galaxies: clusters: general / galaxies: evolution / galaxies: formation / galaxies: luminosity function, mass function
© ESO 2020
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.