University of Oulu

Pavel E Mancera Piña, Reynier F Peletier, J A L Aguerri, Aku Venhola, Scott Trager, Nelvy Choque Challapa; Reviewing the frequency and central depletion of ultra-diffuse galaxies in galaxy clusters from the KIWICS survey, Monthly Notices of the Royal Astronomical Society, Volume 481, Issue 4, 21 December 2018, Pages 4381–4388,

Reviewing the frequency and central depletion of ultra-diffuse galaxies in galaxy clusters from the KIWICS survey

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Author: Mancera Piña, Pavel E.1; Peletier, Reynier F.1; Aguerri, J. A. L.2;
Organizations: 1Kapteyn Astronomical Institute, University of Groningen, Lanleven 12, NL-9747 AD Groningen, the Netherlands
2Instituto de Astrofísica de Canarias, Calle Vía Láctea S/N, E-38205, La Laguna, Tenerife, Spain
3Astronomy Research Unit, University of Oulu, FI-90014 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.6 MB)
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Language: English
Published: Oxford University Press, 2018
Publish Date: 2018-11-07


The number of ultra-diffuse galaxies (UDGs) in clusters is of significant importance to constrain models of their formation and evolution. Furthermore, their distribution inside clusters may tell us something about their interactions with their environments. In this work, we revisit the abundance of UDGs in a more consistent way than in previous studies. We add new data of UDGs in eight clusters from the Kapteyn IAC WEAVE INT Clusters Survey (KIWICS), covering a mass range in which only a few clusters have been studied before, and complement these with a compilation of works in the literature to homogeneously study the relation between the number of UDGs and the mass of their host cluster. Overall, we find that the slope of the number of UDGs–cluster mass relation is consistent with being sublinear when considering galaxy groups or linear if they are excluded, but we argue that most likely the behaviour is sublinear. When systematically studying the relation between the projected distance to the innermost UDG and M200 for each cluster, we find hints that favour a picture in which massive clusters destroy UDGs in their centres.

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Series: Monthly notices of the Royal Astronomical Society
ISSN: 0035-8711
ISSN-E: 1365-8711
ISSN-L: 0035-8711
Volume: 481
Issue: 4
Pages: 4381 - 4388
DOI: 10.1093/mnras/sty2574
Type of Publication: A1 Journal article – refereed
Field of Science: 115 Astronomy and space science
Funding: PEMP thanks the Netherlands Research School for Astronomy (NOVA) for the funding via the NOVA MSc Fellowship. PEMP, RFP, and AV acknowledge financial support from the European Union’s Horizon 2020 research and innovation programme under Marie Skłodowska-Curie grant agreement No. 721463 to the SUNDIAL ITN network. JALA acknowledges support from the Spanish Ministerio de Economía y Competitividad (MINECO) by the grants AYA2013-43188-P and AYA2017-83204-P. AV would like to thank the Vilho, Yrjö, and Kalle Väisälä Foundation of the Finnish Academy of Science and Letters for the funding during the writing of this paper.
EU Grant Number: (721463) SUNDIAL - SUrvey Network for Deep Imaging Analysis and Learning
Copyright information: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.