Surface Brightness Evolution of Galaxies in the CANDELS GOODS Fields up to $z\sim 6$: High-z Galaxies are Unique or Remain Undetected

Abstract

We investigate the rest-frame Ultraviolet (UV, $\lambda \sim 2000$Å) surface brightness (SB) evolution of galaxies up to $z\sim 6$ using a variety of deep Hubble Space Telescope imaging. UV SB is a measure of the density of emission from mostly young stars and correlates with an unknown combination of star formation rate, initial mass function, cold gas mass density, dust attenuation, and the size evolution of galaxies. In addition to physical effects, the SB is, unlike magnitude, a more direct way in which a galaxy's detectability is determined. We find a very strong evolution in the intrinsic SB distribution which declines as $(1+z{)}^3$, decreasing by 4-5 mag arcsec${}^{-2}$ between $z=6$ to $z=1$. This change is much larger than expected in terms of the evolution in UV luminosity, sizes or dust extinction and we demonstrate that this evolution is 'unnatural' and due to selection biases. We also find no strong correlation between mass and UV SB. Thus, deep HST imaging is unable to discover all of the most massive galaxies in the distant universe. Through simulations we show that only $\sim 15$\% of galaxies that we can detect at $z=2$ would be detected at high-$z$. We furthermore explore possible origins of high SB galaxies at high-$z$ by investigating the relationship between intrinsic SB and star formation rates. We conclude that ultra-high SB galaxies are produced by very gas rich dense galaxies which are in a unique phase of evolution, possibly produced by mergers. Analogues of such galaxies do not exist in the relatively nearby universe.

arXiv commentAccepted for publication in AAS Journals (ApJ). 25 pages, 14 figures

References in corpus (53)

• Stellar population synthesis at the resolution of 2003
• Galactic Stellar and Substellar Initial Mass Function
• The Global Schmidt Law in Star Forming Galaxies
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey - The Hubble Space Telescope Observations, Imaging Data Products and Mosaics
• The Star Formation Efficiency in Nearby Galaxies: Measuring Where Gas Forms Stars Effectively
• EAZY: A Fast, Public Photometric Redshift Code
• Lyman Break Galaxies at z>4 and the Evolution of the UV Luminosity Density at High Redshift
• The Star Formation History of Field Galaxies
• UV Luminosity Functions at redshifts z~4 to z~10: 10000 Galaxies from HST Legacy Fields
• Dust Absorption And The Ultraviolet Luminosity Density At z \approx 3 As Calibrated By Local Starburst Galaxies
• PHIBSS: molecular gas content and scaling relations in z~1-3 normal star forming galaxies
• The Relationship Between Stellar Light Distributions of Galaxies and their Formation Histories
• Confirmation of the remarkable compactness of massive quiescent galaxies at z~2.3: early-type galaxies did not form in a simple monolithic collapse
• Strong size evolution of the most massive galaxies since z~2
• UV Continuum Slope and Dust Obscuration from z~6 to z~2: The Star Formation Rate Density at High Redshift
• Size evolution of the most massive galaxies at 1.7<z<3 from GOODS NICMOS survey imaging
• The Rest-Frame UV Luminosity Density of Star-Forming Galaxies at Redshifts z>3.5
• A new multi-field determination of the galaxy luminosity function at z=7-9 incorporating the 2012 Hubble Ultra Deep Field imaging
• Structural and Photometric Classification of Galaxies - I. Calibration Based on a Nearby Galaxy Sample
• Galaxies at z~6: The UV Luminosity Function and Luminosity Density from 506 UDF, UDF-Ps, and GOODS i-dropouts
• The mass evolution of the first galaxies: stellar mass functions and star formation rates at $4<z<7$ in the CANDELS GOODS-South field
• Stellar masses from the CANDELS survey: the GOODS-South and UDS fields
• The Panchromatic Starburst Intensity Limit At Low And High Redshift
• Hubble Space Telescope imaging of the CFRS and LDSS redshift surveys II: Structural parameter and the evolution of disk galaxies to z=1
• GEMS: The Size Evolution of Disk Galaxies
• Hubble Space Telescope Imaging of Star-Forming Galaxies at Redshifts z>3
• THE CANADA-FRANCE REDSHIFT SURVEY IX: HST Imaging of High-Redshift Field Galaxies
• The GALEX-VVDS Measurement of the Evolution of the 1500A Luminosity Function
• The Evolution of Galaxy Number Density at z < 8 and its Implications
• Observational constraints on the merger history of galaxies since $z\approx 6$: Probabilistic galaxy pair counts in the CANDELS fields
• Evolution of Disk Galaxies in the GOODS-South Field: Number Densities and Size Distribution
• Early type galaxies have been the predominant morphological class for massive galaxies since only z~1
• The Magnitude-Size Relation of Galaxies out to z ~ 1
• Evolution of the galaxy stellar mass functions and UV luminosity functions at $z=6-9$ in the Hubble Frontier Fields
• Dust attenuation in 2<z<3 star-forming galaxies from deep ALMA observations of the Hubble Ultra Deep Field
• The Evolution of Mass-size Relation for Lyman Break Galaxies From z=1 to z=7
• GPz: Non-stationary sparse Gaussian processes for heteroscedastic uncertainty estimation in photometric redshifts
• Luminous Lyman Break Galaxies at z>5 and the Source of Reionization
• Star Formation at z~6: i-dropouts in the ACS GTO fields
• The Morphology of Passively Evolving Galaxies at z ~ 2 from HST/WFC3 Deep Imaging in the Hubble Ultradeep Field
• The CANADA-FRANCE REDSHIFT SURVEY XI: Morphology of high-redshift field galaxies from high-resolution ground-based imaging
• Large disk-like galaxies at high redshift
• Towards a resolved Kennicutt-Schmidt law at high redshift
• The spatially-resolved star formation histories of CALIFA galaxies: Implications for galaxy formation
• Interpreting the observed UV continuum slopes of high-redshift galaxies
• Quantitative Morphological Analysis of the HDF--North and HDF-South. I. Early- and Late-type Luminosity-Size Relations of galaxies out to z~1
• The Structures of Distant Galaxies - II: Diverse Galaxy Structures and Local Environments at z = 4-6; Implications for Early Galaxy Assembly
• Subaru Deep Survey III. Evolution of Rest-Frame Luminosity Functions Based on the Photometric Redshifts for A K'-band Selected Galaxy Sample
• Tracing galaxy populations through cosmic time: A critical test of methods for connecting the same galaxies between different redshifts at $z<3$
• Models of Disk Evolution: Confrontation with Observations
• Unbiased Differential Size Evolution and the Inside-Out Growth of Galaxies in the Deep CANDELS GOODS Fields at $1\le z\le 7$
• The Evolution of Galaxies at Constant Number Density: A Less Biased View of Star Formation, Quenching, and Structural Formation

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