Old, Lyndsay J.Lyndsay J.OldBalogh, Michael L.Michael L.Baloghvan der Burg, Remco F. J.Remco F. J.van der BurgBIVIANO, ANDREAANDREABIVIANOYee, Howard K. C.Howard K. C.YeePintos-Castro, IreneIrenePintos-CastroWebb, KristiKristiWebbMuzzin, AdamAdamMuzzinRudnick, GregoryGregoryRudnickVulcani, BenedettaBenedettaVulcaniPoggianti, BiancaBiancaPoggiantiCooper, MichaelMichaelCooperZaritsky, DennisDennisZaritskyCerulo, PierluigiPierluigiCeruloWilson, GillianGillianWilsonChan, Jeffrey C. C.Jeffrey C. C.ChanLidman, ChrisChrisLidmanMcGee, SeanSeanMcGeeDemarco, RicardoRicardoDemarcoForrest, BenBenForrestDE LUCIA, GABRIELLAGABRIELLADE LUCIAGilbank, DavidDavidGilbankKukstas, EgidijusEgidijusKukstasMcCarthy, Ian G.Ian G.McCarthyJablonka, PascalePascaleJablonkaNantais, JulieJulieNantaisNoble, AllisonAllisonNobleReeves, Andrew M. M.Andrew M. M.ReevesShipley, HeathHeathShipley2022-02-252022-02-2520200035-8711http://hdl.handle.net/20.500.12386/31478We 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 [O<SUB>II</SUB>]-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 ± 0.1 (∼3.3σ) across the stellar mass range: 9.0 < log (M<SUB>*</SUB>/M<SUB>⊙</SUB>) < 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 time-scales.STAMPAenArticle10.1093/mnras/staa579https://academic.oup.com/mnras/article/493/4/5987/5780231?login=true2020MNRAS.493.5987OFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering