Non-linearity and environmental dependence of the star-forming galaxies main sequence

G. Erfanianfar, P. Popesso, A. Finoguenov, D. Wilman, S. Wuyts, A. Biviano, M. Salvato, M. Mirkazemi, L. Morselli, F. Ziparo, K. Nandra, D. Lutz, D. Elbaz, M. Dickinson, M. Tanaka, M. B. Altieri, H. Aussel, F. Bauer, S. Berta, R. M. Bielby & 13 others N. Brandt, N. Cappelluti, A. Cimatti, M. C. Cooper, D. Fadda, O. Ilbert, E. Le Floch, B. Magnelli, J. S. Mulchaey, R. Nordon, J. A. Newman, A. Poglitsch, F. Pozzi

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Abstract

Using data from four deep fields (COSMOS, AEGIS, ECDFS, and CDFN), we study the correlation between the position of galaxies in the star formation rate (SFR) versus stellar mass plane and local environment at z <1.1. To accurately estimate the galaxy SFR, we use the deepest available Spitzer/MIPS 24 and Herschel/PACS data sets. We distinguish group environments (Mhalo ~ 1012.5-14.2M⊙) based on the available deep X-ray data and lower halo mass environments based on the local galaxy density.We confirm that the main sequence (MS) of star-forming galaxies is not a linear relation and there is a flattening towards higher stellar masses (M* > 1010.4-10.6 M⊙), across all environments. At high redshift (0.5 <z10.4-1010.6M⊙) stellar mass, morphology and environment act together in driving the evolution of the star formation activity towards lower level. The presence of a dominating bulge and the associated quenching processes are already in place beyond z ~1. The environmental effects appear, instead, at lower redshifts and have a long time-scale.

Original languageEnglish
Pages (from-to)2839-2851
Number of pages13
JournalMonthly Notices of the Royal Astronomical Society
Volume455
Issue number3
Early online date25 Nov 2015
DOIs
Publication statusPublished - 21 Jan 2016

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nonlinearity
galaxies
stars
stellar mass
star formation rate
halos
flattening
environmental effect
star formation
quenching
timescale
estimates
x rays
rate

Keywords

  • Galaxies: groups: general
  • Galaxies: haloes
  • Galaxies: star formation
  • Galaxy: evolution
  • Galaxy: structure
  • Infrared: galaxies

Cite this

Non-linearity and environmental dependence of the star-forming galaxies main sequence. / Erfanianfar, G.; Popesso, P.; Finoguenov, A.; Wilman, D.; Wuyts, S.; Biviano, A.; Salvato, M.; Mirkazemi, M.; Morselli, L.; Ziparo, F.; Nandra, K.; Lutz, D.; Elbaz, D.; Dickinson, M.; Tanaka, M.; Altieri, M. B.; Aussel, H.; Bauer, F.; Berta, S.; Bielby, R. M.; Brandt, N.; Cappelluti, N.; Cimatti, A.; Cooper, M. C.; Fadda, D.; Ilbert, O.; Le Floch, E.; Magnelli, B.; Mulchaey, J. S.; Nordon, R.; Newman, J. A.; Poglitsch, A.; Pozzi, F.

In: Monthly Notices of the Royal Astronomical Society, Vol. 455, No. 3, 21.01.2016, p. 2839-2851.

Research output: Contribution to journalArticle

Erfanianfar, G, Popesso, P, Finoguenov, A, Wilman, D, Wuyts, S, Biviano, A, Salvato, M, Mirkazemi, M, Morselli, L, Ziparo, F, Nandra, K, Lutz, D, Elbaz, D, Dickinson, M, Tanaka, M, Altieri, MB, Aussel, H, Bauer, F, Berta, S, Bielby, RM, Brandt, N, Cappelluti, N, Cimatti, A, Cooper, MC, Fadda, D, Ilbert, O, Le Floch, E, Magnelli, B, Mulchaey, JS, Nordon, R, Newman, JA, Poglitsch, A & Pozzi, F 2016, 'Non-linearity and environmental dependence of the star-forming galaxies main sequence', Monthly Notices of the Royal Astronomical Society, vol. 455, no. 3, pp. 2839-2851. https://doi.org/10.1093/mnras/stv2485
Erfanianfar, G. ; Popesso, P. ; Finoguenov, A. ; Wilman, D. ; Wuyts, S. ; Biviano, A. ; Salvato, M. ; Mirkazemi, M. ; Morselli, L. ; Ziparo, F. ; Nandra, K. ; Lutz, D. ; Elbaz, D. ; Dickinson, M. ; Tanaka, M. ; Altieri, M. B. ; Aussel, H. ; Bauer, F. ; Berta, S. ; Bielby, R. M. ; Brandt, N. ; Cappelluti, N. ; Cimatti, A. ; Cooper, M. C. ; Fadda, D. ; Ilbert, O. ; Le Floch, E. ; Magnelli, B. ; Mulchaey, J. S. ; Nordon, R. ; Newman, J. A. ; Poglitsch, A. ; Pozzi, F. / Non-linearity and environmental dependence of the star-forming galaxies main sequence. In: Monthly Notices of the Royal Astronomical Society. 2016 ; Vol. 455, No. 3. pp. 2839-2851.
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T1 - Non-linearity and environmental dependence of the star-forming galaxies main sequence

AU - Erfanianfar, G.

AU - Popesso, P.

AU - Finoguenov, A.

AU - Wilman, D.

AU - Wuyts, S.

AU - Biviano, A.

AU - Salvato, M.

AU - Mirkazemi, M.

AU - Morselli, L.

AU - Ziparo, F.

AU - Nandra, K.

AU - Lutz, D.

AU - Elbaz, D.

AU - Dickinson, M.

AU - Tanaka, M.

AU - Altieri, M. B.

AU - Aussel, H.

AU - Bauer, F.

AU - Berta, S.

AU - Bielby, R. M.

AU - Brandt, N.

AU - Cappelluti, N.

AU - Cimatti, A.

AU - Cooper, M. C.

AU - Fadda, D.

AU - Ilbert, O.

AU - Le Floch, E.

AU - Magnelli, B.

AU - Mulchaey, J. S.

AU - Nordon, R.

AU - Newman, J. A.

AU - Poglitsch, A.

AU - Pozzi, F.

PY - 2016/1/21

Y1 - 2016/1/21

N2 - Using data from four deep fields (COSMOS, AEGIS, ECDFS, and CDFN), we study the correlation between the position of galaxies in the star formation rate (SFR) versus stellar mass plane and local environment at z <1.1. To accurately estimate the galaxy SFR, we use the deepest available Spitzer/MIPS 24 and Herschel/PACS data sets. We distinguish group environments (Mhalo ~ 1012.5-14.2M⊙) based on the available deep X-ray data and lower halo mass environments based on the local galaxy density.We confirm that the main sequence (MS) of star-forming galaxies is not a linear relation and there is a flattening towards higher stellar masses (M* > 1010.4-10.6 M⊙), across all environments. At high redshift (0.5 10.6M⊙) stellar mass, morphology and environment act together in driving the evolution of the star formation activity towards lower level. The presence of a dominating bulge and the associated quenching processes are already in place beyond z ~1. The environmental effects appear, instead, at lower redshifts and have a long time-scale.

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KW - Galaxies: groups: general

KW - Galaxies: haloes

KW - Galaxies: star formation

KW - Galaxy: evolution

KW - Galaxy: structure

KW - Infrared: galaxies

UR - http://www.scopus.com/inward/record.url?scp=84959146378&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1093/mnras/stv2485

U2 - 10.1093/mnras/stv2485

DO - 10.1093/mnras/stv2485

M3 - Article

VL - 455

SP - 2839

EP - 2851

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -