ZFIRE: Similar Stellar Growth in H$\alpha$-emitting Cluster and Field Galaxies at z~2

Abstract

We compare galaxy scaling relations as a function of environment at $z\sim 2$ with our ZFIRE survey where we have measured H$\alpha$ fluxes for 90 star-forming galaxies selected from a mass-limited [$\log (M_{\star }/M_{\odot })>9$] sample based on ZFOURGE. The cluster galaxies (37) are part of a confirmed system at z=2.095 and the field galaxies (53) are at $1.9<z<2.4$; all are in the COSMOS legacy field. There is no statistical difference between H$\alpha$-emitting cluster and field populations when comparing their star formation rate (SFR), stellar mass ($M_{\star }$), galaxy size ($r_{eff}$), SFR surface density [$\Sigma$(H${\alpha }_{star}$)], and stellar age distributions. The only difference is that at fixed stellar mass, the H$\alpha$-emitting cluster galaxies are $\log (r_{eff})\sim 0.1$ larger than in the field. Approximately 19% of the H$\alpha$-emitters in the cluster and 26% in the field are IR-luminous ($L_{IR}>2\times 10^{11}{L}_{\odot }$). Because the LIRGs in our combined sample are $\sim 5$ times more massive than the low-IR galaxies, their radii are $\sim 70$% larger. To track stellar growth, we separate galaxies into those that lie above, on, and below the H$\alpha$ star-forming main sequence (SFMS) using $\Delta$SFR$(M_{\star })=\pm 0.2$ dex. Galaxies above the SFMS (starbursts) tend to have higher H$\alpha$ SFR surface densities and younger light-weighted stellar ages compared to galaxies below the SFMS. Our results indicate that starbursts (+SFMS) in the cluster and field at $z\sim 2$ are growing their stellar cores. Lastly, we compare to the (SFR-$M_{\star }$) relation from RHAPSODY cluster simulations and find the predicted slope is nominally consistent with the observations. However, the predicted cluster SFRs tend to be too low by a factor of $\sim 2$ which seems to be a common problem for simulations across environment.

arXiv commentApJ in press; full version of Table 1 available from ApJ and upon request. Survey websites are http://zfire.swinburne.edu.au and http://zfourge.tamu.edu

References in corpus (85)

• Galactic Stellar and Substellar Initial Mass Function
• On the variation of the Initial Mass Function
• Star Formation in Galaxies Along the Hubble Sequence
• The Dust Content and Opacity of Actively Star-Forming Galaxies
• Cosmic Star Formation History
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Star Formation in the Milky Way and Nearby Galaxies
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey
• Cosmological Hydrodynamics with Adaptive Mesh Refinement: a new high resolution code called RAMSES
• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• 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
• EAZY: A Fast, Public Photometric Redshift Code
• Physical Models of Galaxy Formation in a Cosmological Framework
• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• The size distribution of galaxies in the Sloan Digital Sky Survey
• Introducing the Illustris Project: the evolution of galaxy populations across cosmic time
• An ultra-deep near-infrared spectrum of a compact quiescent galaxy at z=2.2
• 3D-HST WFC3-selected Photometric Catalogs in the Five CANDELS/3D-HST Fields: Photometry, Photometric Redshifts and Stellar Masses
• Detection of quiescent galaxies in a bicolor sequence from z=0-2
• Constraining the Low-Mass Slope of the Star Formation Sequence at 0.5<z<2.5
• Dusty Star-Forming Galaxies at High Redshift
• Galaxy Structure and Mode of Star Formation in the SFR-Mass Plane from z ~ 2.5 to z ~ 0.1
• The 3D-HST Survey: Hubble Space Telescope WFC3/G141 grism spectra, redshifts, and emission line measurements for $\sim 100,000$ galaxies
• 3D-HST: A wide-field grism spectroscopic survey with the Hubble Space Telescope
• Combined CO & Dust Scaling Relations of Depletion Time and Molecular Gas Fractions with Cosmic Time, Specific Star Formation Rate and Stellar Mass
• Dust-Corrected Star Formation Rates of Galaxies. II. Combinations of Ultraviolet and Infrared Tracers
• Strong Nebular Line Ratios in the Spectra of z~2-3 Star-forming Galaxies: First Results from KBSS-MOSFIRE
• Structural Parameters of Galaxies in CANDELS
• Galaxy evolution in groups and clusters: star formation rates, red sequence fractions, and the persistent bimodality
• Galaxy Stellar Mass Functions from ZFOURGE/CANDELS: An Excess of Low-Mass Galaxies Since z=2 and the Rapid Buildup of Quiescent Galaxies
• What do we learn from IRAC observations of galaxies at 2 < z < 3.5?
• Galaxy Evolution in Cosmological Simulations With Outflows I: Stellar Masses and Star Formation Rates
• The Gemini Cluster Astrophysics Spectroscopic Survey (GCLASS): The Role of Environment and Self-Regulation in Galaxy Evolution at z ~ 1
• The MOSDEF Survey: Electron Density and Ionization Parameter at $z\sim 2.3$
• The SFR-M* Relation and Empirical Star-Formation Histories from ZFOURGE at 0.5 < z < 4
• Halpha Morphologies and Environmental Effects in Virgo Cluster Spiral Galaxies
• Predicting dust extinction from the stellar mass of a galaxy
• A Spitzer-Selected Galaxy Cluster at z=1.62
• The MOSDEF Survey: Mass, Metallicity, and Star-formation Rate at z~2.3
• Where stars form: inside-out growth and coherent star formation from HST Halpha maps of 2676 galaxies across the main sequence at z~1
• An Atlas of Galaxy Spectral Energy Distributions from the Ultraviolet to the Mid-Infrared
• 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
• Reversal of Fortune: Confirmation of an Increasing Star Formation-Density Relation in a Cluster at z=1.62
• A Large Population of Massive Compact Post-Starburst Galaxies at z>1: Implications for the Size Evolution and Quenching Mechanism of Quiescent Galaxies
• The Era of Star Formation in Galaxy Clusters
• Direct measurements of dust attenuation in z~1.5 star-forming galaxies from 3D-HST: Implications for dust geometry and star formation rates
• GOODS-Herschel and CANDELS: The Morphologies of Ultraluminous Infrared Galaxies at z~2
• Constraints on the Assembly and Dynamics of Galaxies: I. Detailed Rest-frame Optical Morphologies on Kiloparsec-scale of z ~ 2 Star-forming Galaxies
• Spitzer IRAC confirmation of z_850-dropout galaxies in the Hubble Ultra Deep Field: stellar masses and ages at z~7
• CANDELS Observations of the Structural Properties and Evolution of Galaxies in a Cluster at z=1.62
• An HST/WFC3-IR Morphological Survey of Galaxies at z = 1.5-3.6: I. Survey Description and Morphological Properties of Star Forming Galaxies
• First Results from Z-FOURGE: Discovery of a Candidate Cluster at z = 2.2 in COSMOS
• Ongoing Gas Stripping in the Virgo Cluster Spiral NGC 4522
• Tracing the Star Formation-Density Relation to z~2
• MUFASA: Galaxy star formation, gas, and metal properties across cosmic time
• Galaxy Structure as a Driver of the Star Formation Sequence Slope and Scatter
• Morphology and Size Differences between Local & High Redshift Luminous Infrared Galaxies
• Massive starburst galaxies in a z=2.16 proto-cluster unveiled by panoramic H-alpha mapping
• A Hubble Space Telescope NICMOS and ACS Morphological Study of z~2 Submillimetre Galaxies
• WFC3 grism confirmation of the distant cluster Cl J1449+0856 at z=2.00: Quiescent and star-forming galaxy populations
• Far-infrared surveys of galaxy evolution
• Spitzer/MIPS 24um Observations of Galaxy Clusters: An Increasing Fraction of Obscured Star-forming Members from z=0.02 to z=0.83
• ZFIRE: A KECK/MOSFIRE Spectroscopic Survey of Galaxies in Rich Environments at z~2
• Rhapsody-G simulations I: the cool cores, hot gas and stellar content of massive galaxy clusters
• KECK/MOSFIRE spectroscopic confirmation of a Virgo-like cluster ancestor at z=2.095
• IDCS J1433.2+3306: An IR-Selected Galaxy Cluster at z = 1.89
• The Absence of an Environmental Dependence in the Mass-Metallicity Relation at z=2
• CANDELS Observations of the Environmental Dependence of the Color-Mass-Morphology Relation at z = 1.6
• The evolution of the star formation activity per halo mass up to redshift ~ 1.6 as seen by Herschel
• ZFIRE: Galaxy Cluster Kinematics, H$\alpha$ Star Formation Rates, and Gas-Phase Metallicities of XMM-LSS J02182-05102 at z=1.6233
• ZFOURGE catalogue of AGN candidates: an enhancement of 160μm-derived star-formation rates in active galaxies to $z$ = 3.2
• Large scale structure around a z=2.1 cluster
• The MOSDEF Survey: The strong agreement between H-alpha and UV-to-FIR star formation rates for z~2 star-forming galaxies
• An Extreme Starburst in Close Proximity to the Central Galaxy of a Rich Galaxy Cluster at z=1.7
• Herschel reveals the obscured star formation in HiZELS Hα emitters at z=1.47
• Star formation in the cluster CLG0218.3-0510 at z=1.62 and its large-scale environment: the infrared perspective
• Cold-Mode Accretion: Driving the Fundamental Mass-Metallicity Relation at z~2
• The Differential Size Growth of Field and Cluster Galaxies at z=2.1 Using the ZFOURGE Survey
• Morphologies of Galaxies in and around a Protocluster at z=2.300
• Z-FIRE: ISM properties of the z = 2.095 COSMOS Cluster
• RHAPSODY-G simulations II - Baryonic growth and metal enrichment in massive galaxy clusters
• The Gigaparsec WiggleZ Simulations: Characterising scale dependant bias and associated systematics in growth of structure measurements
• UV to IR Luminosities and Dust Attenuation Determined from ~4000 K-Selected Galaxies at 1<z<3 in the ZFOURGE Survey
• ZFIRE: The Kinematics of Star-Forming Galaxies as a Function of Environment at z~2
• On the Reversal of SFR-Density Relation at z=1: Insights from Simulations

Cited by in corpus (15)

• Spectroscopic Confirmation of a Protocluster at $z=3.37$ with a High Fraction of Quiescent Galaxies
• MAHALO Deep Cluster Survey I. Accelerated and enhanced galaxy formation in the densest regions of a protocluster at z=2.5
• VIS3COS: II. Nature and nurture in galaxy structure and morphology
• ZFIRE: Using H$\alpha$ equivalent widths to investigate the in situ initial mass function at z~2
• HST/WFC3 grism observations of $z\sim 1$ clusters: Evidence for rapid outside-in environmental quenching from spatially resolved H$\alpha$ maps
• A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE).XIV. The main sequence relation in a rich environment down to M_star ~ 10^6 Mo
• MOSEL: Strong [OIII]5007 Å Emitting Galaxies at (3<z<4) from the ZFOURGE Survey
• Discovery of Protoclusters at z~3.7 & 4.9: Embedded in Primordial Superclusters
• ZFIRE: 3D Modeling of Rotation, Dispersion, and Angular Momentum of Star-Forming Galaxies at z~2
• The H$\alpha$ star formation main sequence in cluster and field galaxies at $z\sim 1.6$
• Environmental impacts on the rest-frame UV size and morphology ofstar-forming galaxies at $z\sim 2$
• The nature of H$\alpha$-selected galaxies along the large-scale structure at z=0.4 revealed by Subaru Hyper Suprime-Cam survey
• A Tale of Two Clusters: An Analysis of Gas-Phase Metallicity and Nebular Gas Conditions in Proto-cluster Galaxies at z~2
• ZFIRE: The Beginning of the End for Massive Galaxies at z ~ 2 and Why Environment Matters
• From the Densest Clusters to the Emptiest Voids: No Evidence For Environmental Effects on the Galaxy Size-Mass Relation at Low Redshift