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Quantifying the suppression of the (un)-obscured star formation in galaxy cluster cores at 0.2≲ z ≲0.9

Rodríguez-Muñoz, L; Rodighiero, G; Mancini, C; Pérez-González, PG; Rawle, TD; Egami, E; Mercurio, A; Rosati, P; Puglisi, A; Franceschini, A; Balestra, I; Baronchelli, I; Biviano, A; Ebeling, H; Edge, AC; Enia, AFM; Grillo, C; Haines, CP; Iani, E; Jones, T; Nonino, M; Valtchanov, I; Vulcani, B; Zemcov, M

Quantifying the suppression of the (un)-obscured star formation in galaxy cluster cores at 0.2≲ z ≲0.9 Thumbnail


L Rodríguez-Muñoz

G Rodighiero

C Mancini

PG Pérez-González

TD Rawle

E Egami

A Mercurio

P Rosati

A Puglisi

A Franceschini

I Balestra

I Baronchelli

A Biviano

H Ebeling

AFM Enia

C Grillo

CP Haines

E Iani

T Jones

M Nonino

I Valtchanov

B Vulcani

M Zemcov


We quantify the star formation (SF) in the inner cores (⁠R/R200 ≤0.3) of 24 massive galaxy clusters at 0.2≲ z ≲0.9 observed by the Herschel Lensing Survey and the Cluster Lensing and Supernova survey with Hubble. These programmes, covering the rest-frame ultraviolet to far-infrared regimes, allow us to accurately characterize stellar mass-limited (⁠M∗>1010 M⊙) samples of star-forming cluster members (not)-detected in the mid- and/or far-infrared. We release the catalogues with the photometry, photometric redshifts, and physical properties of these samples. We also quantify the SF displayed by comparable field samples from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey. We find that in intermediate-z cluster cores, the SF activity is suppressed with respect the field in terms of both the fraction (⁠F⁠) of star-forming galaxies (SFGs) and the rate at which they form stars (⁠SFR and sSFR=SFR/M∗⁠). On average, the F of SFGs is a factor ∼2 smaller in cluster cores than in the field. Furthermore, SFGs present average SFR and sSFR typically ∼0.3 dex smaller in the clusters than in the field along the whole redshift range probed. Our results favour long time-scale quenching physical processes as the main driver of SF suppression in the inner cores of clusters since z ∼0.9, with shorter time-scale processes being very likely responsible for a fraction of the missing SFG population.


Rodríguez-Muñoz, L., Rodighiero, G., Mancini, C., Pérez-González, P., Rawle, T., Egami, E., …Zemcov, M. (2019). Quantifying the suppression of the (un)-obscured star formation in galaxy cluster cores at 0.2≲ z ≲0.9. Monthly Notices of the Royal Astronomical Society, 485(1), 586-619.

Journal Article Type Article
Acceptance Date Dec 5, 2018
Online Publication Date Feb 7, 2019
Publication Date May 31, 2019
Deposit Date May 29, 2019
Publicly Available Date May 29, 2019
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 485
Issue 1
Pages 586-619


Published Journal Article (3.8 Mb)

Copyright Statement
© 2019 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society.

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