Charting the main sequence of star-forming galaxies out to redshifts z<5.7

Abstract

We present a new determination of the star-forming main sequence (MS), obtained through stacking 100k K-band-selected galaxies in the far-infrared (FIR) Herschel and James Clerk Maxwell Telescope (JCMT) imaging. By fitting the dust emission curve to the stacked FIR photometry, we derive the IR luminosities (LIR), and hence the star formation rates (SFRs) out to z<5.7. The functional form of the MS is found, with the linear SFR-M* relation that flattens at high stellar masses and the normalization that increases exponentially with redshift. We derive the corresponding redshift evolution of the specific star formation rate (sSFR) and compare our findings with the recent literature. We find our MS to be exhibiting slightly lower normalization at z<2 and to flatten at somewhat larger stellar masses at high redshifts. By deriving the relationship between the peak dust temperature (Td) and redshift, where Td increases linearly from ~20 K at z=0.5 to ~50 K at z=5, we conclude that the apparent inconsistencies in the shapes of the MS are most likely caused by the different dust temperatures assumed when deriving SFRs in the absence of FIR data. Finally, we investigate the derived shape of the star-forming MS by simulating the time evolution of the observed galaxy stellar mass function (GSMF). While the simulated GSMF is in good agreement with the observed one, some inconsistencies persist. In particular, we find the simulated GSMF to be slightly overpredicting the number density of low-mass galaxies at z>2.

Astronomy & Astrophysics, published; 12 pages, 9 figures, 2 tables; V2: changed redshift range to 5.7, redshift bins equally spaced in time since BB, Td-z relation now quadratic - no change in the conclusions

References in corpus (29)

• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• EAZY: A Fast, Public Photometric Redshift Code
• A Highly Consistent Framework for the Evolution of the Star-Forming "Main Sequence" from z~0-6
• COSMOS Photometric Redshifts with 30-bands for 2-deg2
• Constraining the Low-Mass Slope of the Star Formation Sequence at 0.5<z<2.5
• The Herschel view of the dominant mode of galaxy growth from z=4 to the present day
• UltraVISTA: a new ultra-deep near-infrared survey in COSMOS
• What do we learn from IRAC observations of galaxies at 2 < z < 3.5?
• The Main Sequence of star-forming galaxies across cosmic times
• The SCUBA-2 Cosmology Legacy Survey: 850um maps, catalogues and number counts
• The Subaru/XMM-Newton Deep Survey (SXDS) - II. Optical Imaging and Photometric Catalogs
• A Turnover in the Galaxy Main Sequence of Star Formation at $M_{\ast }\sim 10^{10}{M}_{\odot }$ for Redshifts $z<1.3$
• Dust temperature and mid-to-total infrared color distributions for star-forming galaxies at 0<z<4
• ALMA uncovers the [CII] emission and warm dust continuum in a z = 8.31 Lyman break galaxy
• The VLA-COSMOS 3 GHz Large Project: Evolution of specific star formation rates out to $z\sim 5$
• A New Census of the 0.2< z <3.0 Universe, Part II: The Star-Forming Sequence
• An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: Source catalogue and properties
• Revisiting the Integrated Star Formation Law. II. Starbursts and the Combined Global Schmidt Law
• The Complete Redshift Distribution of Dusty Star-forming Galaxies from the SPT-SZ Survey
• The evolution of the galaxy stellar mass function over the last twelve billion years from a combination of ground-based and HST surveys
• Automated Mining of the ALMA Archive in the COSMOS Field (A3COSMOS): I. Robust ALMA Continuum Photometry Catalogs and Stellar Mass and Star Formation Properties for ~700 Galaxies at z=0.5-6
• ALMA Characterises the Dust Temperature of z ~ 5.5 Star-Forming Galaxies
• Reconciling the observed star-forming sequence with the observed stellar mass function
• Warm dust in high-z galaxies: origin and implications
• A${}^3$COSMOS: A census on the molecular gas mass and extent of main-sequence galaxies across cosmic time
• The bending of the star-forming main sequence traces the cold- to hot-accretion transition mass over 0<z<4
• No Redshift Evolution of Dust Temperatures from $0<z<2$
• z-GAL -- A NOEMA spectroscopic redshift survey of bright Herschel galaxies: [II] Dust properties
• Probing the Star Formation Main Sequence down to $10^8$ M${}_{\odot }$ at $1.0<z<3.0$

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• The Evolution of the SFR-M_* relation at 0.1<z<4: Environmental and Morphological Dependencies
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