Chemodynamic evolution of dwarf galaxies in tidal fields

Abstract

The mass-metallicity relation shows that the galaxies with the lowest mass have the lowest metallicities. As most dwarf galaxies are in group environments, interaction effects such as tides could contribute to this trend. We perform a series of smoothed particle hydrodynamics (SPH) simulations of dwarf galaxies in external tidal fields to examine the effects of tides on their metallicities and metallicity gradients. In our simulated galaxies, gravitational instabilities drive gas inwards and produce centralized star formation and a significant metallicity gradient. Strong tides can contribute to these instabilities, but their primary effect is to strip the outer low-metallicity gas, producing a truncated gas disk with a large metallicity. This suggests that the role of tides on the mass-metallicity relation is to move dwarf galaxies to higher metallicities.

arXiv commentAccepted to ApJ

References in corpus (87)

• The Structure of Cold Dark Matter Halos
• The Global Schmidt Law in Star Forming Galaxies
• The Origin of the Mass--Metallicity Relation: Insights from 53,000 Star-Forming Galaxies in the SDSS
• The observed properties of dwarf galaxies in and around the Local Group
• The Star Formation Law in Nearby Galaxies on Sub-Kpc Scales
• The Star-formation Mass Sequence out to z=2.5
• Morphological Transformation from Galaxy Harassment
• The lesser role of starbursts for star formation at z=2
• Molecular Gas and Star Formation in Nearby Disk Galaxies
• Stellar Feedback in Galaxies and the Origin of Galaxy-scale Winds
• Optical Spectroscopy and Nebular Oxygen Abundances of the Spitzer/SINGS Galaxies
• Mass, Metal, and Energy Feedback in Cosmological Simulations
• The Origin of the Galaxy Mass-Metallicity Relation and Implications for Galactic Outflows
• Simultaneous ram pressure and tidal stripping; how dwarf spheroidals lost their gas
• The Enrichment of the Intergalactic Medium with Adiabatic Feedback I: Metal Cooling and Metal Diffusion
• Extremely Inefficient Star Formation in the Outer Disks of Nearby Galaxies
• Little Things
• A New Mechanism for Radial Migration in Galactic Disks: Spiral-Bar Resonance Overlap
• The Metamorphosis of Tidally Stirred Dwarf Galaxies
• The Role of Dwarf Galaxy Interactions in Shaping the Magellanic System and Implications for Magellanic Irregulars
• Bar formation and evolution in disc galaxies with gas and a triaxial halo: Morphology, bar strength and halo properties
• Dwarf Elliptical Galaxies
• The Structure of the Interstellar Medium of Star Forming Galaxies
• Strangulation in Galaxy Groups
• Stellar Velocities in the Carina, Fornax, Sculptor and Sextans dSph Galaxies: Data from the Magellan/MMFS Survey
• Tidal stirring and the origin of dwarf spheroidals in the Local Group
• Towards a more realistic population of bright spiral galaxies in cosmological simulations
• Feedback and the fudamental line of low-luminosity LSB/dwarf galaxies
• Gas accretion as the origin of chemical abundance gradients in distant galaxies
• GCD+: A New Chemodynamical Approach to Modeling SNe and Chemical Enrichment
• Morphological evolution of disk galaxies in clusters
• Metallicity Gradients in Disks: Do Galaxies Form Inside-Out?
• The Rise and Fall of Satellites in Galaxy Clusters
• The tidal stripping of satellites
• The Star Formation & Chemical Evolution History of the Sculptor Dwarf Spheroidal Galaxy
• Constraining Sub-Grid Physics with High-Redshift Spatially-Resolved Metallicity Distributions
• Properties of gas in and around galaxy haloes
• Gas Metallicities in the Extended Disks of NGC 1512 and NGC 3621. Chemical Signatures of Metal Mixing or Enriched Gas Accretion?
• Signatures of radial migration in barred galaxies: Azimuthal variations in the metallicity distribution of old stars
• On the Orbits of Infalling Satellite Halos
• On the Efficiency of the Tidal Stirring Mechanism for the Origin of Dwarf Spheroidals: Dependence on the Orbital and Structural Parameters of the Progenitor Disky Dwarfs
• Transformation from spirals into S0s with bulge growth in groups of galaxies
• Age and metallicity gradients in early-type galaxies: A dwarf to giant sequence
• A simple and accurate approximation for the Q stability parameter in multi-component and realistically thick discs
• The GALEX Arecibo SDSS Survey V: The Relation between the HI Content of Galaxies and Metal Enrichment at their Outskirts
• Nearby early-type galaxies with ionized gas. III. Analysis of line-strength indices with new stellar population models
• Mass-metallicity relation from z=5 to the present: Evidence for a transition in the mode of galaxy growth at z=2.6 due to the end of sustained primordial gas infall
• The Sensitivity of Harassment to Orbit: Mass Loss from Early-Type Dwarfs in Galaxy Clusters
• Chemical Abundances of Seven Irregular and Three Tidal Dwarf Galaxies in the M81 Group
• Gravitational Instabilities in Two-Component Galaxy Disks with Gas Dissipation
• Proper Motions of Dwarf Spheroidal Galaxies from Hubble Space Telescope Imaging. IV: Measurement for Sculptor
• Proper Motions of Dwarf Spheroidal Galaxies from Hubble Space Telescope Imaging. V: Final Measurement for Fornax
• The Radical Consequences of Realistic Satellite Orbits for the Heating and Implied Merger Histories of Galactic Disks
• Star Formation and Metallicity Gradients in Semi-analytic Models of Disk Galaxy Formation
• Lopsided Spiral Galaxies
• Gas inflow and metallicity drops in star-forming galaxies
• The Evolution of Dwarf Galaxies with Star Formation in Outward Propagating Super Shell
• The dependence of the galaxy mass-metallicity relation on environment and the implied metallicity of the IGM
• The SLUGGS survey: Exploring the metallicity gradients of nearby early-type galaxies to large radii
• Orbital parameters of infalling satellite haloes in the hierarchical $\Lambda$CDM model
• The ACS LCID project. IX. Imprints of the early Universe in the radial variation of the star formation history of dwarf galaxies
• Mass Transport and Turbulence in Gravitationally Unstable Disk Galaxies II: The Effects of Star Formation Feedback
• How effective is harassment on infalling late-type dwarfs?
• Chemical mixing in smoothed particle hydrodynamics simulations
• Star Formation History and Chemical Evolution of the Sextans Dwarf Spheroidal Galaxy
• Mass Transport and Turbulence in Gravitationally Unstable Disk Galaxies. I: The Case of Pure Self-Gravity
• The Variation in Molecular Gas Depletion Time among Nearby Galaxies: What are the Main Parameter Dependencies?
• Suppression of star formation in dwarf galaxies by grain photoelectric feedback
• Where are the missing cosmic metals ?
• What powers the starburst activity of NGC 1068? Star-driven gravitational instabilities caught in the act
• Outside-in disk evolution in the LMC
• Mixing and transport of metals by gravitational instability-driven turbulence in galactic discs
• Calibrating an updated SPH scheme within GCD+
• Orbits of radial migrators and non-migrators around a spiral arm in N-body simulations
• Simulating the evolution of disc galaxies in a group environment. I. The influence of the global tidal field
• Star-forming dwarf galaxies in the Virgo cluster: the link between molecular gas, atomic gas, and dust
• Gaseous infall triggering starbursts in simulated dwarf galaxies
• A first measurement of the Proper Motion of the Leo II dwarf spheroidal galaxy
• The Correlation of Metallicity Gradient with Galaxy Mass
• Numerical Simulations of Bubble-Induced Star Formation in Dwarf Irregular Galaxies with a Novel Stellar Feedback Scheme
• The Kennicutt-Schmidt Relation in Extremely Metal-Poor Dwarf Galaxies
• Metal diffusion in smoothed particle hydrodynamics simulations of dwarf galaxies
• Cosmological Simulations using GCMHD+
• Metallicity Gradients - Mass Dependency in Dwarf Elliptical Galaxies
• Stellar population gradients from cosmological simulations: dependence on mass and environment in local galaxies
• Stellar Metallicity Gradients in SDSS galaxies
• Stripping of nitrogen-rich AGB ejecta from interacting dwarf irregular galaxies

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