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; 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

doi:10.1093/mnras/stv2485

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. BielbyN. 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

Department of Physics

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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 (M_halo ~ 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* > 10^10.4-10.6 M⊙), across all environments. At high redshift (0.5 <z10.4-10^10.6M⊙) 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.

Original language	English
Pages (from-to)	2839-2851
Number of pages	13
Journal	Monthly Notices of the Royal Astronomical Society
Volume	455
Issue number	3
Early online date	25 Nov 2015
DOIs	https://doi.org/10.1093/mnras/stv2485
Publication status	Published - 21 Jan 2016

Keywords

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

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10.1093/mnras/stv2485

MNRAS-2016-Erfanianfar-2839-51Final published version, 4.99 MB

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

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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., ... Pozzi, F. (2016). Non-linearity and environmental dependence of the star-forming galaxies main sequence. Monthly Notices of the Royal Astronomical Society, 455(3), 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, 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

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title = "Non-linearity and environmental dependence of the star-forming galaxies main sequence",

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 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.",

keywords = "Galaxies: groups: general, Galaxies: haloes, Galaxies: star formation, Galaxy: evolution, Galaxy: structure, Infrared: galaxies",

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

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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.

AB - 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.

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

AN - SCOPUS:84959146378

SN - 0035-8711

VL - 455

SP - 2839

EP - 2851

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

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

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Keywords

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