An alternate approach to measure specific star formation rates at 2<z<7

Abstract

We trace the specific star formation rate (sSFR) of massive star-forming galaxies ($\gtrsim 10^{10}{\mathcal{M}}_{\odot }$) from $z\sim 2$ to 7. Our method is substantially different from previous analyses, as it does not rely on direct estimates of star formation rate, but on the differential evolution of the galaxy stellar mass function (SMF). We show the reliability of this approach by means of semi-analytical and hydrodynamical cosmological simulations. We then apply it to real data, using the SMFs derived in the COSMOS and CANDELS fields. We find that the sSFR is proportional to $(1+z{)}^{1.1\pm 0.2}$ at $z>2$, in agreement with other observations but in tension with the steeper evolution predicted by simulations from $z\sim 4$ to 2. We investigate the impact of several sources of observational bias, which however cannot account for this discrepancy. Although the SMF of high-redshift galaxies is still affected by significant errors, we show that future large-area surveys will substantially reduce them, making our method an effective tool to probe the massive end of the main sequence of star-forming galaxies.

ApJ accepted

References in corpus (31)

• Cosmic Star Formation History
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• The Cosmic Evolution Survey (COSMOS) -- Overview
• Star Formation in AEGIS Field Galaxies since z=1.1 : The Dominance of Gradually Declining Star Formation, and the Main Sequence of Star-Forming Galaxies
• The propagation of uncertainties in stellar population synthesis modeling I: The relevance of uncertain aspects of stellar evolution and the IMF to the derived physical properties of galaxies
• A Highly Consistent Framework for the Evolution of the Star-Forming "Main Sequence" from z~0-6
• Properties of galaxies reproduced by a hydrodynamic simulation
• Simulating galaxy formation with black hole driven thermal and kinetic feedback
• Introducing the Illustris Project: the evolution of galaxy populations across cosmic time
• 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
• The effect of galaxy mass ratio on merger--driven starbursts
• The Relation Between SFR and Stellar Mass for Galaxies at 3.5 $\le z\le$ 6.5 in CANDELS
• The galaxy stellar mass function at 3.5<z<7.5 in the CANDELS/UDS, GOODS-South, and HUDF fields
• Stellar masses from the CANDELS survey: the GOODS-South and UDS fields
• The star formation main sequence and stellar mass assembly of galaxies in the Illustris simulation
• A Turnover in the Galaxy Main Sequence of Star Formation at $M_{\ast }\sim 10^{10}{M}_{\odot }$ for Redshifts $z<1.3$
• The FourStar Galaxy Evolution Survey (ZFOURGE): ultraviolet to far-infrared catalogs, medium-bandwidth photometric redshifts with improved accuracy, stellar masses, and confirmation of quiescent galaxies to z~3.5
• The Evolution of Stellar Mass and the Implied Star Formation History
• The Star Formation Main Sequence in the Hubble Space Telescope Frontier Fields
• GOODS-HERSCHEL: star formation, dust attenuation and the FIR-radio correlation on the Main Sequence of star-forming galaxies up to z~4
• High-redshift major mergers weakly enhance star formation
• A consistent measure of the merger histories of massive galaxies using close-pair statistics I: Major mergers at $z<3.5$
• Constructing Merger Trees that Mimic N-Body Simulations
• Are high redshift Galaxies hot? - Temperature of z > 5 Galaxies and Implications on their Dust Properties
• Determining the stellar masses of submillimetre galaxies: the critical importance of star formation histories
• The MUSE Hubble Ultra Deep Field Survey. IX. Evolution of galaxy merger fraction since z~6
• Stellar mass functions of galaxies at 4<z<7 from an IRAC-selected sample in COSMOS/UltraVISTA: limits on the abundance of very massive galaxies
• The limited role of galaxy mergers in driving stellar mass growth over cosmic time

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• On the ages of bright galaxies $\sim 500$ Myr after the Big Bang: insights into star formation activity at $z\gtrsim 15$ with JWST
• Low-redshift compact star-forming galaxies as analogues of high-redshift star-forming galaxies
• The Evolving Interstellar Medium of Star-Forming Galaxies, as traced by $\text{Stardust}$
• The evolution of the SFR and Sigma-SFR of galaxies in cosmic morning (4 < z < 10)
• The Spitzer/IRAC Legacy over the GOODS Fields: Full-Depth 3.6, 4.5, 5.8 and 8.0um Mosaics and Photometry for > 9000 Galaxies at z~3.5-10 from the GOODS Re-ionization Era wide-Area Treasury from Spitzer (GREATS)
• The observed cosmic star formation rate density has an evolution which resembles a Γ(a, bt) distribution and can be described successfully by only 2 parameters
• Low-Surface-Brightness Galaxies are missing in the observed Stellar Mass Function
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• Deep Spitzer/IRAC Data for z~10 galaxies Reveal Blue Balmer Break Colors: Young Stellar Populations at ~500 Myr of Cosmic Time
• The high-redshift Universe with Spitzer
• Probing galaxy evolution from $z=0$ to $z\simeq 10$ through galaxy scaling relations in three L-Galaxies flavours
• Probing Reionization-Era Galaxies with JWST UV Luminosity Functions and Large-Scale Clustering
• ALPINE: A Large Survey to Understand Teenage Galaxies
• Star formation history of $0.1\le \text{z}\le 1.5$ mass-selected galaxies in the ELAIS-N1 Field
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