Star formation sustained by gas accretion

Abstract

This paper discusses how cosmic gas accretion controls star formation, and summarizes the physical properties expected for the cosmic gas accreted by galaxies. The paper also collects observational evidence for gas accretion sustaining star formation. It reviews evidence inferred from neutral and ionized hydrogen, as well as from stars. A number of properties characterizing large samples of star-forming galaxies can be explained by metal-poor gas accretion, in particular, the relationship between stellar mass, metallicity, and star formation rate (the so-called fundamental metallicity relationship). They are put forward and analyzed. Theory predicts gas accretion to be particularly important at high redshift, so indications based on distant objects are reviewed, including the global star formation history of the universe, and the gas around galaxies as inferred from absorption features in the spectra of background sources.

Accepted for publication in A&ARev. 52 pages. 14 Figures

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• Local anti-correlation between star-formation rate and gas-phase metallicity in disk galaxies
• Spectroscopy of 7 Radio-Loud QSOs at 2<z<6: Giant Lyman-alpha Nebulae Accreting onto Host Galaxies
• Shrinking Galaxy Disks with Fountain-Driven Accretion from the Halo
• Distribution of streaming rates into high-redshift galaxies
• The Gas-phase Metallicity Profiles of Star-forming Galaxies in the Modified Accretion Disk Framework
• A cosmic stream of atomic carbon gas connected to a massive radio galaxy at redshift 3.8
• Metallicity Gradient of Barred Galaxies with TYPHOON
• The Kennicutt-Schmidt Relation in Extremely Metal-Poor Dwarf Galaxies
• Revealing the Ionization Properties of the Magellanic Stream using Optical Emission
• On the properties of the interstellar medium in extremely metal-poor blue compact dwarf galaxies. A VIMOS-IFU study of the cometary galaxy and Ly $\alpha$ absorber Tol 65
• The origin of the relation between metallicity and size in star-forming galaxies
• Scaling relations and baryonic cycling in local star-forming galaxies. III. Outflows, effective yields and metal loading factors
• Dark influences III. Structural characterization of minor mergers of dwarf galaxies with dark satellites
• The fundamental metallicity relation emerges from the local anti-correlation between star formation rate and gas-phase metallicity existing in disk galaxies
• Kinematics of Extremely Metal-poor Galaxies: Evidence for Stellar Feedback
• The HIX galaxy survey I: Study of the most gas rich galaxies from HIPASS
• Starburst galaxies in the COSMOS field: clumpy star-formation at redshift 0 < z < 0.5
• The ALMA REBELS Survey: Discovery of a massive, highly star-forming and morphologically complex ULIRG at $z=7.31$
• Starburst and post-starburst high-redshift protogalaxies: The feedback impact of high energy cosmic rays
• What is Important? Morphological Asymmetries are Useful Predictors of Star Formation Rates of Star-forming Galaxies in SDSS Stripe 82
• Star Formation and Gas Accretion in Nearby Galaxies
• Metallicity and ionization state of the gas in polar-ring galaxies
• New Analytic Solutions for Galaxy Evolution II: Wind Recycling, Galactic Fountains and Late-Type Galaxies
• Star formation in the nearby dwarf galaxy DDO 53: interplay between gas accretion and stellar feedback
• On the nature of the unusual transient AT 2018cow from HI observations of its host galaxy
• Spatially-resolved chemodynamics of the starburst dwarf galaxy CGCG 007-025: Evidence for recent accretion of metal-poor gas
• On the dearth of ultra-faint extremely metal poor galaxies
• Modeling the chemical enrichment history of the Bulge Fossil Fragment Terzan 5
• Molecular gas in AzTEC/C159: a star-forming disk galaxy 1.3Gyr after the Big Bang
• New empirical constraints on the cosmological evolution of gas and stars in galaxies
• Hubble Space Telescope Observations of Accretion-Induced Star Formation in the Tadpole Galaxy Kiso 5639
• A geostatistical analysis of multiscale metallicity variations in galaxies [II]: Predicting the metallicities of Hii and diffuse ionised gas regions via universal kriging
• The Ly$\alpha$ emission from high-$z$ galaxies hosting strong Damped Ly$\alpha$ systems
• Starbursting Nuclei in Old Dwarf Galaxies
• Search for gas accretion imprints in voids: II. The galaxy Ark 18 as a result of a dwarf-dwarf merger
• Exploring the relation between dust mass and galaxy properties using Dusty SAGE
• Local and global gas metallicity versus stellar age relation in MaNGA galaxies
• Star-forming galaxies at low-redshift in the SHARDS survey
• Gas Accretion and Star Formation Rates
• The First Billion Years project: gamma-ray bursts at z>5
• Possible origins of anomalous HI gas around MHONGOOSE galaxy, NGC 5068
• The transformation and quenching of simulated gas-rich dwarf satellites within a group environment
• MaNGA 8313-1901: gas accretion observed in a blue compact dwarf galaxy?
• SDSS-IV MaNGA: A serendipitous observation of a potential gas accretion event
• New constraints on the evolution of the MHI-M* scaling relation combining CHILES and MIGHTEE-HI data
• The Herschel Virgo Cluster Survey. XIX. Physical properties of low luminosity FIR sources at $z<$ 0.5
• Feedback and dynamical masses in high-$z$ galaxies: the advent of high-resolution NIRSpec spectroscopy
• Cosmic Sands: The Origin of Dusty, Star-forming Galaxies in the Epoch of Reionization
• Observational Evidence For Constant Gas Accretion Rate Since z = 5
• The Velocity Map Asymmetry of Ionized Gas in MaNGA. I. The Catalog and General Properties
• A Comparison of Star-Forming Clumps and Tidal Tails in Local Mergers and High Redshift Galaxies
• The Similar Signatures of Coplanar Gas Inflow and Disk Warps in Galactic Gas Kinematic Maps
• History of the gas fuelling star formation in eagle galaxies
• Spitzer observations of extragalactic H II regions - III. NGC 6822 and the hot star, H II region connection
• The origin of correlations between mass, metallicity and morphology in galaxies from the EAGLE simulation
• Search for gas accretion imprints in voids: I. Sample selection and results for NGC 428
• The extended HI halo of NGC 4945 as seen by MeerKAT
• XMP gas-rich dwarfs in Nearby Voids: candidate selection
• Physical and kinematic conditions of the local merging galaxy NGC 1487
• Measuring the physical imprints of gas flows in galaxies I: Accretion rate histories
• The interstellar medium in the environment of the supernova-less long-duration GRB 111005A
• The ALMA-CRISTAL survey: Extended [CII] emission in an interacting galaxy system at z ~ 5.5
• UM462, a local green pea galaxy analogue under the MUSE magnifying glass
• The Origin of Star Formation in Early-type Galaxies Inferred from Spatially Resolved Spectroscopy
• Active galactic nuclei feedback in an elliptical galaxy (III): the impacts and fate of cosmological inflow
• Multiple gas acquisition events in galaxies with dual misaligned gas disks
• On the effective oxygen yield in the disks of spiral galaxies
• The discovery of blue-cored dwarf early-type galaxies in isolated environments
• Investigating the Growth of Little Red Dot Descendants at z<4 with the JWST
• Gas engaged in noncircular motions in LITTLE THINGS dwarf irregular galaxies
• The bi-modal ${}^7$Li distribution of the Milky Way's thin-disk dwarf stars: The role of Galactic-scale events and stellar evolution
• Decoding NGC 628 with radiative transfer methods
• Optimizing spectral stacking for 21-cm observations of galaxies: accuracy assessment and symmetrized stacking
• Discovery of faint double-peak Halpha emission in the halo of low redshift galaxies
• A headless tadpole galaxy: the high gas-phase metallicity of the ultra-diffuse galaxy UGC 2162
• An MHD spectral theory approach to Jeans' magnetized gravitational instability
• The outskirts of M33: Tidally induced distortions versus signatures of gas accretion
• The H IX galaxy survey III: The gas-phase metallicity in HI eXtreme galaxies
• Absorption line abundances in the SMC-like galaxy UGC 5282: evidence for ISM dilution from inflows on kiloparsec scales
• A Recent Starbust in the Low Surface Brightness Galaxy UGC 628
• The Impact of Bars, Spirals and Bulge-Size on Gas-Phase Metallicity Gradients in MaNGA Galaxies
• Uncovering Extraplanar Gas in UGCA 250 with the Ultra-deep MHONGOOSE Survey
• Analytic growth rate of gravitational instability in self-gravitating planar polytropes
• Chemodynamic evidence of pristine gas accretion in the void galaxy VGS 12
• Cosmic Rays and Non-thermal Emission Induced by Accretion of Cool Gas onto the Galactic Disk
• UV-IR color profiles of the outer regions of 2K nearby S${}^4$G galaxies
• Hubble Space Telescope Observations of Tadpole Galaxies Kiso 3867, SBS0, SBS1, and UM461
• Evolution and star formation history of NGC300 from a chemical evolution model with radial gas inflows
• Evidence for large scale compressible turbulence in the ism of CSWA13, a star-Forming Lensed Galaxy at z = 1.87 with outflowing wind
• The galaxy starburst/main-sequence bimodality over five decades in stellar mass at z ~ 3-6.5
• Aligned and misaligned metallicity gradients in young stars and star-forming regions in the EAGLE discs
• Chemical evolution history of MaNGA galaxies
• Clumpy Starburst in a Local Dwarf Galaxy, NGC 1522
• The cosmic environment overtakes the local density in shaping galaxy star formation