The Kormendy relation of galaxies in the Frontier Fields clusters: Abell S1063 and MACS J1149.5+2223

Luca Tortorelli, Amata Mercurio, Maurizio Paolillo, Piero Rosati, Adriana Gargiulo, Raphael Gobat, Italo Balestra, G. B. Caminha, Marianna Annunziatella, Claudio Grillo, Marco Lombardi, Mario Nonino, Alessandro Rettura, Barbara Sartoris, Veronica Strazzullo

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We analyse the Kormendy relations (KRs) of the two Frontier Fields clusters, Abell S1063, at z = 0.348, and MACS J1149.5+2223, at z = 0.542, exploiting very deep Hubble Space Telescope photometry and Very Large Telescope (VLT)/Multi Unit Spectroscopic Explorer (MUSE) integral field spectroscopy. With this novel data set, we are able to investigate how the KR parameters depend on the cluster galaxy sample selection and how this affects studies of galaxy evolution based on the KR. We define and compare four different galaxy samples according to (a) Sérsic indices: early-type ('ETG'), (b) visual inspection: 'ellipticals', (c) colours: 'red', (d) spectral properties: 'passive'. The classification is performed for a complete sample of galaxies with mF814W ≤ 22.5 ABmag (M* ≳ 1010.0 M). To derive robust galaxy structural parameters, we use two methods: (1) an iterative estimate of structural parameters using images of increasing size, in order to deal with closely separated galaxies and (2) different background estimations, to deal with the intracluster light contamination. The comparison between the KRs obtained from the different samples suggests that the sample selection could affect the estimate of the best-fittingKR parameters. TheKR built with ETGs is fully consistent with the one obtained for ellipticals and passive. On the other hand, the KR slope built on the red sample is only marginally consistent with those obtained with the other samples. We also release the photometric catalogue with structural parameters for the galaxies included in the present analysis.

Original languageEnglish
Pages (from-to)648-668
Number of pages21
JournalMonthly Notices of the Royal Astronomical Society
Volume477
Issue number1
DOIs
StatePublished - 11 Jun 2018
Externally publishedYes

Keywords

  • Catalogues
  • Galaxies: Clusters: General
  • Galaxies: Clusters: Individual: Abell S1063
  • Galaxies: Evolution
  • Galaxies: Stellar content
  • MACSJ1149.5+2223
  • Methods: Data analysis

Fingerprint

Dive into the research topics of 'The Kormendy relation of galaxies in the Frontier Fields clusters: Abell S1063 and MACS J1149.5+2223'. Together they form a unique fingerprint.

Cite this