Star-forming Clumps in Local Luminous Infrared Galaxies

Abstract

We present $HST$ narrow-band near-infrared imaging of Pa$\alpha$ and Pa$\beta$ emission of 48 local Luminous Infrared Galaxies (LIRGs) from the Great Observatories All-Sky LIRG Survey (GOALS). These data allow us to measure the properties of 810 spatially resolved star-forming regions (59 nuclei and 751 extra-nuclear clumps), and directly compare their properties to those found in both local and high-redshift star-forming galaxies. We find that in LIRGs, the star-forming clumps have radii ranging from $\sim 90-900$ pc and star formation rates (SFRs) of $\sim 1\times 10^{-3}$ to 10 M${}_{\odot }$yr${}^{-1}$, with median values for extra-nuclear clumps of 170 pc and 0.03 M${}_{\odot }$yr${}^{-1}$. The detected star-forming clumps are young, with a median stellar age of $8.7$ Myrs, and a median stellar mass of $5\times 10^5$ M${}_{\odot }$. The SFRs span the range of those found in normal local star-forming galaxies to those found in high-redshift star-forming galaxies at $\mathrm{z}=1-3$. The luminosity function of the LIRG clumps has a flatter slope than found in lower-luminosity, star-forming galaxies, indicating a relative excess of luminous star-forming clumps. In order to predict the possible range of star-forming histories and gas fractions, we compare the star-forming clumps to those measured in the MassiveFIRE high-resolution cosmological simulation. The star-forming clumps in MassiveFIRE cover the same range of SFRs and sizes found in the local LIRGs and have total gas fractions that extend from 10 to 90%. If local LIRGs are similar to these simulated galaxies, we expect future observations with ALMA will find a large range of gas fractions, and corresponding star formation efficiencies, among the star-forming clumps in LIRGs.

References in corpus (54)

• On the variation of the Initial Mass Function
• The Global Schmidt Law in Star Forming Galaxies
• Starburst99: Synthesis Models for Galaxies with Active Star Formation
• Star Formation in the Milky Way and Nearby Galaxies
• The Star Formation Efficiency in Nearby Galaxies: Measuring Where Gas Forms Stars Effectively
• The reversal of the star formation-density relation in the distant universe
• Multiwavelength study of massive galaxies at z~2. I. Star formation and galaxy growth
• GOODS-Herschel: an infrared main sequence for star-forming galaxies
• The IRAS Revised Bright Galaxy Sample (RBGS)
• Formation of Massive Galaxies at High Redshift: Cold Streams, Clumpy Disks and Compact Spheroids
• The lesser role of starbursts for star formation at z=2
• Calibrating Extinction-Free Star Formation Rate Diagnostics with 33GHz Free-Free Emission in NGC6946
• Different star formation laws for disks versus starbursts at low and high redshifts
• Submillimeter Galaxies at z~2: Evidence for Major Mergers & Constraints on Lifetimes, IMF and CO-H2 Conversion Factor
• The SINS survey of z~2 galaxy kinematics: properties of the giant star forming clumps
• From rings to bulges: evidence for rapid secular galaxy evolution at z~2 from integral field spectroscopy in the SINS survey
• GOALS: The Great Observatories All-Sky LIRG Survey
• The Mass Function of Young Star Clusters in the "Antennae" Galaxies
• 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
• Faintest Galaxy Morphologies from $HST$ WFPC2 Imaging of the Hawaii Survey Fields
• Clumpy Galaxies in GOODS and GEMS: Massive Analogs of Local Dwarf Irregulars
• Near-Infrared and Star-forming properties of Local Luminous Infrared Galaxies
• Mid-Infrared Properties of Nearby Luminous Infrared Galaxies I: Spitzer IRS Spectra for the GOALS Sample
• Resolved Spectroscopy of Gravitationally-Lensed Galaxies: Recovering Coherent Velocity Fields in Sub-Luminous z~2-3 Galaxies
• Star Cluster Formation and Evolution in Nearby Starburst Galaxies: II. Initial Conditions
• Mid-Infrared Spectral Diagnostics of Luminous Infrared Galaxies
• Resolved spectroscopy of gravitationally lensed galaxies: global dynamics and star-forming clumps on ~100pc scales
• Numerical biases on IMF determinations created by binning
• A Constant Bar Fraction out to Redshift z~1 in the Advanced Camera for Surveys Field of the Tadpole Galaxy
• Extreme Star Formation in the Interacting Galaxy Arp299 (IC694 + NGC3690)
• Giant clumps in the FIRE simulations: a case study of a massive high-redshift galaxy
• 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
• Scaling Relations of Star-Forming Regions: from kpc-size clumps to HII regions
• The nature of giant clumps in distant galaxies probed by the anatomy of the Cosmic Snake
• Clumpy Galaxies in CANDELS. II. Physical Properties of UV-bright Clumps at $0.5\le z<3$
• Morphology and Molecular Gas Fractions of Local Luminous Infrared Galaxies as a Function of Infrared Luminosity and Merger Stage
• Mid-Infrared Properties of Luminous Infrared Galaxies II: Probing the Dust and Gas Physics of the GOALS Sample
• DYNAMO-HST Survey: Clumps in Nearby Massive Turbulent Disks and the Effects of Clump Clustering on Kiloparsec Scale Measurements of Clumps
• A lower fragmentation mass scale in high redshift galaxies and its implications on giant clumps: a systematic numerical study
• The formation of massive, quiescent galaxies at cosmic noon
• The Spatial Extent of (U)LIRGs in the Mid-Infrared. II. Feature Emission
• The Link Between the Formation Rates of Clusters and Stars in Galaxies
• Physical Properties of Sub-galactic Clumps at 0.5 $\le z\le$ 1.5 in the UVUDF
• VLT-SINFONI integral field spectroscopy of low-z luminous and ultraluminous infrared galaxies II. 2D extinction structure and distance effects
• The sub-galactic and nuclear main sequences for local star-forming galaxies
• The scaling relations and star formation laws of ministarburst complexes
• Integral field optical spectroscopy of a representative sample of ULIRGs: II. Two-dimensional kpc-scale extinction structure
• Keck OSIRIS AO LIRG Analysis: Feedback in the Nuclei of Luminous Infrared Galaxies
• VLT-SINFONI sub-kpc study of the star formation in local LIRGs and ULIRGs: Analysis of the global ${\Sigma }_{\mathrm{SFR}}$ structure and characterisation of individual star-forming clumps
• IROCKS: Spatially resolved kinematics of z~1 star forming galaxies
• The Connection Between Galaxy Environment and the Luminosity Function Slopes of Star-Forming Regions
• A Very Large Array Survey of Luminous Extranuclear Star-forming Regions in Luminous Infrared Galaxies in GOALS
• Sub-kpc star-formation law in the local luminous infrared galaxy IC 4687 as seen by ALMA
• Size-Luminosity Scaling Relations of Local and Distant Star Forming Regions

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• The PHANGS-HST Survey: Physics at High Angular resolution in Nearby GalaxieS with the Hubble Space Telescope
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• Stellar Masses of Giant Clumps in CANDELS and Simulated Galaxies Using Machine Learning
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• The BPT Diagram in Cosmological Galaxy Formation Simulations: Understanding the Physics Driving Offsets at High-Redshift
• GOALS-JWST: Revealing the Buried Star Clusters in the Luminous Infrared Galaxy VV 114
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• Multiply lensed star forming clumps in the A521-sys1 galaxy at redshift 1
• A Comparison between Nuclear Ring Star Formation in LIRGs and Normal Galaxies with the Very Large Array
• Massive Star Cluster Formation and Destruction in Luminous Infrared Galaxies in GOALS II: An ACS/WFC3 Survey of Nearby LIRGs
• What Are Those Tiny Things? A First Study of Compact Star Clusters in the SMACS0723 Field with JWST
• Multi-Scale Stellar Associations across the Star Formation Hierarchy in PHANGS-HST Nearby Galaxies: Methodology and Properties
• High Resolution HST Imaging Survey of Local Star-Forming Galaxies I: Spatially-Resolved Obscured Star Formation with H$\alpha$ and Paschen-$\beta$ Recombination Lines
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• Stellar kinematics in the nuclear regions of nearby LIRGs with VLT-SINFONI. Comparison with gas phases and implications for dynamical mass estimations
• Clumps as multiscale structures in cosmic noon galaxies
• Clumpy star formation and an obscured nuclear starburst in the luminous dusty z=4 galaxy GN20 seen by MIRI/JWST
• Investigating Clumpy Galaxies in the Sloan Digital Sky Survey Stripe 82 using the Galaxy Zoo
• GOALS-JWST: NIRCam and MIRI Imaging of the Circumnuclear Starburst Ring in NGC 7469
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• Tracing the Ionization Structure of the Shocked Filaments of NGC 6240
• A Comparison of Star-Forming Clumps and Tidal Tails in Local Mergers and High Redshift Galaxies
• Optical IFU Observations of GOALS Sample with KOOLS-IFU on Seimei Telescope: Initial results of 9 U/LIRGs at $z<$ 0.04
• Extreme giant molecular clouds in the luminous infrared galaxy NGC 3256
• The SUNBIRD survey: the K-band luminosity functions of young massive clusters in intensely star-forming galaxies
• Shockingly Effective: Cluster Winds as Engines of Feedback in Starburst Galaxy VV 114
• K-Band Imaging of the Nearby, Clumpy Turbulent Disk Galaxy DYNAMO G04-1
• Kinematics and Feedback in H II regions in the Dwarf Starburst Galaxy IC 10
• Spatially Resolved Star Formation relations in local LIRGs along the complete merger sequence