Identikit 1: A Modeling Tool for Interacting Disk Galaxies

Abstract

By combining test-particle and self-consistent techniques, we have developed a method to rapidly explore the parameter space of galactic encounters. Our method, implemented in an interactive graphics program, can be used to find the parameters required to reproduce the observed morphology and kinematics of interacting disk galaxies. We test this system on an artificial data-set of 36 equal-mass merging encounters, and show that it is usually possible to reproduce the morphology and kinematics of these encounters and that a good match strongly constrains the encounter parameters.

22 pages, 16 figures. Accepted by The Astronomical Journal; to appear February 2009. To get a copy with high-resolution figures, use the web interface, or download software, see http://www.ifa.hawaii.edu/~barnes/research/identikit/

References in corpus (29)

• The Structure of Cold Dark Matter Halos
• Local stellar kinematics from Hipparcos data
• Analytical Models For Galactic Nuclei
• Statistical Properties of Collisionless Equal- and Unequal-Mass Merger Remnants of Disk Galaxies
• Triaxial orbit based galaxy models with an application to the (apparent) decoupled core galaxy NGC 4365
• Orbital Parameters of Merging Dark Matter Halos
• Generating Equilibrium Dark Matter Halos: Inadequacies of the Local Maxwellian Approximation
• Dynamical Modeling of NGC 7252 and the Return of Tidal Material
• Formation of a tidal dwarf galaxy in the interacting system Arp 245 (NGC 2992/93)
• Tidal tails in CDM cosmologies
• Shock-induced star formation in a model of the Mice
• Template Rotation Curves for Disk Galaxies
• Dynamical modelling of stars and gas in NGC2974: determination of mass-to-light ratio, inclination and orbital structure by Schwarzschild's method
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• NGC 4654: gravitational interaction or ram pressure stripping?
• Initial conditions for disc galaxies
• Tidal debris from high-velocity collisions as fake dark galaxies: A numerical model of VirgoHI21
• Multi-method-modeling of interacting galaxies. I. A unique scenario for NGC 4449?
• Recovery of the internal orbital structure of galaxies
• Models of the Morphology, Kinematics, and Star Formation History of the Prototypical Collisional Starburst System: NGC 7714/7715 = Arp 284
• Kinematics of Planetary Nebulae in M51's Tidal Debris
• The grazing encounter between IC 2163 and NGC 2207: Pushing the limits of observational modeling
• M51 revisited: a genetic algorithm approach of its interaction history
• Determination of orbital parameters of interacting galaxies using a genetic algorithm. Description of the method and application to artificial data
• A multi-particle model of the 3C 48 host
• Stars and gas in the very large interacting galaxy NGC 6872
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Cited by in corpus (39)

• The Westerbork Hydrogen Accretion in Local Galaxies (HALOGAS) Survey I. Survey Description and Pilot Observations
• Tracing kinematic (mis)alignments in CALIFA merging galaxies: Stellar and ionized gas kinematic orientations at every merger stage
• The Hubble sequence: just a vestige of merger events?
• Morphology and Molecular Gas Fractions of Local Luminous Infrared Galaxies as a Function of Infrared Luminosity and Merger Stage
• Quasi-Resonant Theory of Tidal Interactions
• One moment in time - modeling star formation in the Antennae
• A catalog of merging dwarf galaxies in the local universe
• Galaxy Zoo: Quantifying Morphological Indicators of Galaxy Interaction
• Dynamical Modeling of Galaxy Mergers using Identikit
• Tides in colliding galaxies
• HI in very metal-poor galaxies: the SBS 0335-052 system
• Modeling the Baryon Cycle in Low Mass Galaxy Encounters: the Case of NGC 4490 & NGC 4485
• Galaxy Zoo: Mergers - Dynamical Models of Interacting Galaxies
• Dynamically-Driven Star Formation In Models Of NGC 7252
• N-body simulation of the Stephan's Quintet
• A Widespread, Clumpy Starburst in the Isolated Ongoing Dwarf Galaxy Merger dm1647+21
• Gravitational softening as a smoothing operation
• Merger Signatures in the Dynamics of Star-forming Gas
• Simulated Galaxy Interactions as Probes of Merger Spectral Energy Distributions
• Determining the Nature of the Extended HI Structure Around LITTLE THINGS Dwarf Galaxy NGC 1569
• Evolution of Late-type Galaxies in a Cluster Environment: Effects of High-speed Multiple Encounters with Early-type Galaxies
• Very metal-poor galaxies: ionized gas kinematics in nine objects
• The Role of AGN in Luminous Infrared Galaxies from the Multiwavelength Perspective
• Identikit 2: An Algorithm for Reconstructing Galactic Collisions
• Ages of Star Clusters in the Tidal Tails of Merging Galaxies
• Effects of hot halo gas on the star formation and mass transfer during distant galaxy-galaxy encounters
• The Arp 220 merger on kpc scales
• The Quasar / Galaxy Pair PKS 1327-206 / ESO 1327-2041: Absorption Associated with a Recent Galaxy Merger
• Dynamics and Shocks from H$\alpha$ Emission of Nearby Galaxy Mergers
• Photometry and dynamics of the minor mergers AM\,1228-260 and AM\,2058-381
• Photometry and Dynamics of the Minor Merger AM1219-430 with Gemini GMOS-S
• Determination of the relative inclination and the viewing angle of an interacting pair of galaxies using convolutional neural networks
• Kinematics of M51-type interacting galaxies
• An interaction scenario of the galaxy pair NGC 3893/96 (KPG 302). A single passage?
• Modeling the Initial Conditions of Interacting Galaxy Pairs Using Identikit
• Reconstructing Merger Timelines Using Star Cluster Age Distributions: the Case of MCG+08-11-002
• HI vs. H$\alpha$ - Comparing the Kinematic Tracers in Modeling the Initial Conditions of the Mice
• A Mean-Field Approach to Simulating the Merging of Collisionless Stellar Systems Using a Particle-Based Method
• Gas flows in galaxy mergers: supersonic turbulence in bridges, accretion from the circumgalactic medium, and metallicity dilution