UV-Bright Star-Forming Clumps and Their Host Galaxies in UVCANDELS at 0.5 $\le$ z $\le$ 1

Abstract

Giant star-forming clumps are a prominent feature of star-forming galaxies (SFGs) and contain important clues on galaxy formation and evolution. However, basic demographics of clumps and their host galaxies remain uncertain. Using the HST/WFC3 F275W images from the Ultraviolet Imaging of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (UVCANDELS), we detect and analyze giant star-forming clumps in galaxies at 0.5 $\le$ z $\le$ 1, connecting two epochs when clumps are common (at cosmic high-noon, z $\sim$ 2) and rare (in the local universe). We construct a clump sample whose rest-frame 1600 Å luminosity is 3 times higher than the most luminous local HII regions (M${}_{UV}\le -$16 AB). In our sample, 35 $\pm$ 3$\%$ of low-mass galaxies (log[M${}_{\ast }$/M${}_{\odot }$] $<$ 10) are clumpy (i.e., containing at least one off-center clump). This fraction changes to 22 $\pm$ 3$\%$ and 22 $\pm$ 4$\%$ for intermediate (10 $\le$ log[M${}_{\ast }$/M${}_{\odot }$] $\le$ 10.5) and high-mass (log[M${}_{\ast }$/M${}_{\odot }$] $>$ 10.5) galaxies in agreement with previous studies. When compared to similar-mass non-clumpy SFGs, low- and intermediate-mass clumpy SFGs tend to have higher SFRs and bluer rest-frame U-V colors, while high-mass clumpy SFGs tend to be larger than non-clumpy SFGs. However, clumpy and non-clumpy SFGs have similar Sérsic index, indicating a similar underlying density profile. Furthermore, we investigate how UV luminosity of star-forming regions correlates with the physical properties of host galaxies. On average, more luminous star-forming regions reside in more luminous, smaller, and/or higher-specific SFR galaxies and are found closer to their hosts' galactic center.

arXiv comment21 pages, 13 figures, accepted for publication in ApJ

References in corpus (65)

• 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
• EAZY: A Fast, Public Photometric Redshift Code
• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• Formation of Massive Galaxies at High Redshift: Cold Streams, Clumpy Disks and Compact Spheroids
• Detection of quiescent galaxies in a bicolor sequence from z=0-2
• The Hubble Ultra Deep Field
• The SINS survey of z~2 galaxy kinematics: properties of the giant star forming clumps
• A concise reference to (projected) Sersic R^{1/n} quantities, including Concentration, Profile Slopes, Petrosian indices, and Kron Magnitudes
• From rings to bulges: evidence for rapid secular galaxy evolution at z~2 from integral field spectroscopy in the SINS survey
• The Frontier Fields: Survey Design
• Structural Parameters of Galaxies in CANDELS
• Rapid formation of exponential disks and bulges at high redshift from the dynamical evolution of clump cluster and chain galaxies
• The thick disks of spiral galaxies as relics from gas-rich, turbulent, clumpy disks at high redshift
• Smooth(er) Stellar Mass Maps in CANDELS: Constraints on the Longevity of Clumps in High-redshift Star-forming Galaxies
• A Critical Assessment of Photometric Redshift Methods: A CANDELS Investigation
• Resolved Galaxies in the Hubble Ultra Deep Field: Star Formation in Disks at High Redshift
• Bulge Formation by the Coalescence of Giant Clumps in Primordial Disk Galaxies
• High-redshift clumpy discs and bulges in cosmological simulations
• Stellar masses from the CANDELS survey: the GOODS-South and UDS fields
• Constraints on the assembly and dynamics of galaxies. II. Properties of kiloparsec-scale clumps in rest-frame optical emission of z ~ 2 star-forming galaxies
• Clumpy Galaxies in CANDELS. I. The Definition of UV Clumps and the Fraction of Clumpy Galaxies at 0.5<z<3
• Disk formation and the origin of clumpy galaxies at high redshift
• The long lives of giant clumps and the birth of outflows in gas-rich galaxies at high redshift
• Clumpy Galaxies in GOODS and GEMS: Massive Analogs of Local Dwarf Irregulars
• CANDELS Multiwavelength Catalogs: Source Identification and Photometry in the CANDELS Extended Groth Strip
• Resolved Spectroscopy of Gravitationally-Lensed Galaxies: Recovering Coherent Velocity Fields in Sub-Luminous z~2-3 Galaxies
• The CANDELS/SHARDS multi-wavelength catalog in GOODS-N: Photometry, Photometric Redshifts, Stellar Masses, Emission line fluxes and Star Formation Rates
• Multi-Wavelength View of Kiloparsec-Scale Clumps in Star-Forming Galaxies at z~2
• The Population of Giant Clumps in Simulated High-z Galaxies: In-situ and Ex-situ, Migration and Survival
• CANDELS Multiwavelength Catalogs: Source Identification and Photometry in the CANDELS COSMOS Survey Field
• Giant Clumps in Simulated High-z Galaxies: Properties, Evolution and Dependence on Feedback
• Morphologies of ~190,000 Galaxies at z=0-10 Revealed with HST Legacy Data II. Evolution of Clumpy Galaxies
• Effect of galaxy mergers on star formation rates
• The SINS/zC-SINF Survey of z~2 Galaxy Kinematics: The Nature of Dispersion Dominated Galaxies
• KMOS^3D: Dynamical constraints on the mass budget in early star-forming disks
• Hubble Space Telescope H-alpha imaging of star-forming galaxies at z = 1-1.5: evolution in the size and luminosity of giant HII regions
• The nature of giant clumps in distant galaxies probed by the anatomy of the Cosmic Snake
• Observing the Formation of the Hubble Sequence in the Great Observatories Origins Deep Survey
• Non-linear violent disc instability with high Toomre's Q in high-redshift clumpy disc galaxies
• Clumpy Galaxies in CANDELS. II. Physical Properties of UV-bright Clumps at $0.5\le z<3$
• A Hubble Space Telescope NICMOS and ACS Morphological Study of z~2 Submillimetre Galaxies
• Star Formation in Luminous HII regions in M33
• The MUSE Deep Lensed Field on the Hubble Frontier Field MACS~J0416
• A contribution of star-forming clumps and accreting satellites to the mass assembly of z ~ 2 galaxies
• Stability of Galactic Gas Disks and the Formation of Massive Clusters
• Exploring the physical properties of lensed star-forming clumps at $2\lesssim z\lesssim 6$
• HDUV: The Hubble Deep UV Legacy Survey
• Larson's scaling laws, and the gravitational instability of clumpy discs at high redshift
• Connecting Clump Sizes in Turbulent Disk Galaxies to Instability Theory
• Physical Properties of Sub-galactic Clumps at 0.5 $\le z\le$ 1.5 in the UVUDF
• Evolution of the Fraction of Clumpy Galaxies at 0.2<z<1.0 in the COSMOS field
• Stellar Masses of Giant Clumps in CANDELS and Simulated Galaxies Using Machine Learning
• Characterizing gravitational instability in turbulent multi-component galactic discs
• Molecular gas properties of a lensed star-forming galaxy at z~3.6: a case study
• Star Formation at z=2.481 in the Lensed Galaxy SDSS J1110+6459, II: What is missed at the normal resolution of the Hubble Space Telescope?
• Clump Survival and Migration in VDI Galaxies: an Analytic Model versus Simulations and Observations
• IROCKS: Spatially resolved kinematics of z~1 star forming galaxies
• Galaxy Structure in the Ultraviolet: The Dependence of Morphological Parameters on Rest-Frame Wavelength
• The nature of giant clumps in high-z discs: a deep-learning comparison of simulations and observations
• Giant Star Forming Complexes in High-z Main Sequence Galaxy Analogues: The Internal Structure of Clumps in DYNAMO Galaxies
• Finite Resolution Deconvolution of Multi-Wavelength Imaging of 20,000 Galaxies in the COSMOS Field: The Evolution of Clumpy Galaxies Over Cosmic Time
• Investigating Clumpy Galaxies in the Sloan Digital Sky Survey Stripe 82 using the Galaxy Zoo
• Stellar Masses of Clumps in Gas-rich, Turbulent Disk Galaxies

Cited by in corpus (1)

• Clumpy Starburst in a Local Dwarf Galaxy, NGC 1522