TY - JOUR
T1 - The Kormendy relation of galaxies in the Frontier Fields clusters
T2 - Abell S1063 and MACS J1149.5+2223
AU - Tortorelli, Luca
AU - Mercurio, Amata
AU - Paolillo, Maurizio
AU - Rosati, Piero
AU - Gargiulo, Adriana
AU - GOBAT , RAPHAEL ALEXANDRE SIMON
AU - Balestra, Italo
AU - Caminha, G. B.
AU - Annunziatella, Marianna
AU - Grillo, Claudio
AU - Lombardi, Marco
AU - Nonino, Mario
AU - Rettura, Alessandro
AU - Sartoris, Barbara
AU - Strazzullo, Veronica
PY - 2018/6/11
Y1 - 2018/6/11
N2 - 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.
AB - 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.
KW - Catalogues
KW - Galaxies: Clusters: General
KW - Galaxies: Clusters: Individual: Abell S1063
KW - Galaxies: Evolution
KW - Galaxies: Stellar content
KW - MACSJ1149.5+2223
KW - Methods: Data analysis
UR - http://www.scopus.com/inward/record.url?scp=85046693214&partnerID=8YFLogxK
U2 - 10.1093/mnras/sty617
DO - 10.1093/mnras/sty617
M3 - Article
AN - SCOPUS:85046693214
VL - 477
SP - 648
EP - 668
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 1
ER -