The Massive and Distant Clusters of WISE Survey. XI. Stellar Mass Fractions and Luminosity Functions of MaDCoWS Clusters at z similar to 1

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00561050" target="_blank" >RIV/67985815:_____/22:00561050 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0334233" target="_blank" >https://hdl.handle.net/11104/0334233</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-4357/ac85e5" target="_blank" >10.3847/1538-4357/ac85e5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Massive and Distant Clusters of WISE Survey. XI. Stellar Mass Fractions and Luminosity Functions of MaDCoWS Clusters at z similar to 1

Popis výsledku v původním jazyce

We present stellar mass fractions and composite luminosity functions (LFs) for a sample of 12 clusters from the Massive and Distant Clusters of WISE Survey (MaDCoWS) in the redshift range 0.951 <= z <= 1.43. Using spectral energy distribution fitting of optical and deep mid-infrared photometry, we establish the membership of objects along the lines of sight to these clusters and calculate the stellar masses of member galaxies. This allows us to calculate the stellar mass of the clusters much more precisely than in previous works. We find stellar mass fractions for these clusters largely consistent with previous works, and an apparent negative correlation with total cluster mass. We measure a composite 3.6 mu m LF down to m* + 2.5 for all 12 clusters. Fitting a Schechter function to the LF, we find a characteristic 3.6 mu m magnitude of m* = 19.83 +/- 0.12 and faint-end slope of alpha =0.81 +/- 0.10 for the full sample at a mean redshift of (z) over bar = 1.18. We also divide the clusters into high- and low-redshift bins at (z) over bar = 1.29 and (z) over bar = 1.06, respectively, and measure a composite LF for each bin. We see a small, but statistically significant, evolution in m* and alpha-consistent with passive evolution-when we study the joint fit to the two parameters, which is probing the evolution of faint cluster galaxies at z similar to 1. This highlights the importance of deep IR data in studying the evolution of cluster galaxy populations at high redshift.

Název v anglickém jazyce

The Massive and Distant Clusters of WISE Survey. XI. Stellar Mass Fractions and Luminosity Functions of MaDCoWS Clusters at z similar to 1

Popis výsledku anglicky

We present stellar mass fractions and composite luminosity functions (LFs) for a sample of 12 clusters from the Massive and Distant Clusters of WISE Survey (MaDCoWS) in the redshift range 0.951 <= z <= 1.43. Using spectral energy distribution fitting of optical and deep mid-infrared photometry, we establish the membership of objects along the lines of sight to these clusters and calculate the stellar masses of member galaxies. This allows us to calculate the stellar mass of the clusters much more precisely than in previous works. We find stellar mass fractions for these clusters largely consistent with previous works, and an apparent negative correlation with total cluster mass. We measure a composite 3.6 mu m LF down to m* + 2.5 for all 12 clusters. Fitting a Schechter function to the LF, we find a characteristic 3.6 mu m magnitude of m* = 19.83 +/- 0.12 and faint-end slope of alpha =0.81 +/- 0.10 for the full sample at a mean redshift of (z) over bar = 1.18. We also divide the clusters into high- and low-redshift bins at (z) over bar = 1.29 and (z) over bar = 1.06, respectively, and measure a composite LF for each bin. We see a small, but statistically significant, evolution in m* and alpha-consistent with passive evolution-when we study the joint fit to the two parameters, which is probing the evolution of faint cluster galaxies at z similar to 1. This highlights the importance of deep IR data in studying the evolution of cluster galaxy populations at high redshift.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astrophysical Journal

ISSN

0004-637X

e-ISSN

1538-4357

Svazek periodika

936

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

71

Kód UT WoS článku

000847875400001

EID výsledku v databázi Scopus

2-s2.0-85137399150