Old, LJ, Balogh, ML, Burg, RFJVD, Biviano, A, Yee, HKC, Pintos-Castro, I, Webb, K, Muzzin, A, Rudnick, G, Vulcani, B, Poggianti, B, Cooper, M, Zaritsky, D, Cerulo, P, Wilson, G, Chan, JCC, Lidman, C, McGee, S, Demarco, R, Forrest, B et al, Lucia, GD, Gilbank, D, Kukstas, E, McCarthy, IG, Jablonka, P, Nantais, J, Noble, A, Reeves, AMM and Shipley, H (2020) The GOGREEN survey: The environmental dependence of the star-forming galaxy main sequence at $1.0<z<1.5$. Monthly Notices of the Royal Astronomical Society, 493 (4). pp. 5987-6000. ISSN 0035-8711

Preview	Text staa579.pdf - Published Version Download (5MB) | Preview
Preview	Text Erratum to staa579.pdf - Published Version Download (5MB) | Preview

Abstract

We present results on the environmental dependence of the star-forming galaxy main sequence in 11 galaxy cluster fields at $1.0 < z < 1.5$ from the Gemini Observations of Galaxies in Rich Early Environments Survey (GOGREEN) survey. We use a homogeneously selected sample of field and cluster galaxies whose membership is derived from dynamical analysis. Using [OII]-derived star formation rates (SFRs), we find that cluster galaxies have suppressed SFRs at fixed stellar mass in comparison to their field counterparts by a factor of 1.4 $\pm$ 0.1 ($\sim3.3\sigma$) across the stellar mass range: $9.0 < \log(M_{*} /M_{\odot}) < 11.2$. We also find that this modest suppression in the cluster galaxy star-forming main sequence is mass and redshift dependent: the difference between cluster and field increases towards lower stellar masses and lower redshift. When comparing the distribution of cluster and field galaxy SFRs to the star-forming main sequence, we find an overall shift towards lower SFRs in the cluster population, and note the absence of a tail of high SFR galaxies as seen in the field. Given this observed suppression in the cluster galaxy star-forming main sequence, we explore the implications for several scenarios such as formation time differences between cluster and field galaxies, and environmentally-induced star formation quenching and associated timescales.

Item Type:	Article
Additional Information:	This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2020 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Uncontrolled Keywords:	astro-ph.GA; astro-ph.GA; astro-ph.CO
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Divisions:	Astrophysics Research Institute
Publisher:	Oxford University Press
Related URLs:	http://arxiv.org/abs/2002.11735v1
Date Deposited:	13 Mar 2020 12:46
Last Modified:	28 Feb 2022 13:00
DOI or ID number:	10.1093/mnras/staa579
URI:	https://researchonline.ljmu.ac.uk/id/eprint/12487

View Item