The Effect of Bars on the Ionized ISM: Optical Emission Lines from Milky Way Analogs

Abstract

Gas interior to the bar of the Milky Way has recently been shown as the closest example of a Low Ionization (Nuclear) Emission Region--LI(N)ER--in the universe. To better understand the nature of this gas, a sample of face-on galaxies with integral field spectroscopy are used to study the ionized gas conditions of 240 barred and 250 nonbarred galaxies, focusing on those that are most similar to the Milky Way. Strong optical line emission of $[NII]$ $\lambda 6584$, H$\alpha$, $[OIII]$ $\lambda 5007$, and H$\beta$ are used to diagnose the dominant ionization mechanisms of gas across galaxies and the Galaxy via Baldwin-Phillips-Terlevich (BPT) Diagrams. Barred galaxies show a strong suppression of star formation and an increase in composite and LI(N)ER like spectra in their inner regions when compared with similar nonbarred counterparts. This effect is lessened in galaxies of very low (${\log }_{10}(M_{\star }/M_{\odot })\lesssim 10.4$) or very high (${\log }_{10}(M_{\star }/M_{\odot })\gtrsim 11.1$) total stellar mass. Bar masks from Galaxy Zoo:3D show the bar's non-axisymmetric effect on the ionized gas and help predict the face-on distribution of ionized gas conditions near the bar of the Milky Way.

arXiv comment20 pages, 14 Figures, Accepted for publication in ApJ. Figure 8, 9, and 12 are animations accessible using a PDF viewer such as Acrobat Reader or online: (http://www.astronomy.dk/images/MaNGA_BarredAnimations/RadialBPT_KDE_Combined.mp4), (http://www.astronomy.dk/images/MaNGA_BarredAnimations/MassBinnedBPT.mp4), (http://www.astronomy.dk/images/MaNGA_BarredAnimations/BarLength_BPT_Radial_KDE.mp4)

References in corpus (86)

• Astropy: A Community Python Package for Astronomy
• The NumPy array: a structure for efficient numerical computation
• The Sloan Digital Sky Survey: Technical Summary
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• On the variation of the Initial Mass Function
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• The Host Galaxies of AGN
• Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
• Star Formation in the Milky Way and Nearby Galaxies
• Theoretical Modeling of Starburst Galaxies
• The 2.5 m Telescope of the Sloan Digital Sky Survey
• The Host Galaxies and Classification of Active Galactic Nuclei
• Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
• The Galaxy in Context: Structural, Kinematic and Integrated Properties
• Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
• Adaptive spatial binning of integral-field spectroscopic data using Voronoi tessellations
• A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies
• The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
• The mass distribution and gravitational potential of the Milky Way
• The Multi-Object, Fiber-Fed Spectrographs for SDSS and the Baryon Oscillation Spectroscopic Survey
• Calibrating Extinction-Free Star Formation Rate Diagnostics with 33GHz Free-Free Emission in NGC6946
• Mass models of the Milky Way
• Observational evidence for AGN feedback in early-type galaxies
• Galaxy Zoo 2: detailed morphological classifications for 304,122 galaxies from the Sloan Digital Sky Survey
• A Catalog of Bulge+Disk Decompositions and Updated Photometry for 1.12 Million Galaxies in the Sloan Digital Sky Survey
• Dust-Corrected Star Formation Rates of Galaxies. II. Combinations of Ultraviolet and Infrared Tracers
• Improved background subtraction for the Sloan Digital Sky Survey images
• Improved Estimates of the Milky Way's Stellar Mass and Star Formation Rate from Hierarchical Bayesian Meta-Analysis
• The MaNGA Integral Field Unit Fiber Feed System for the Sloan 2.5 m Telescope
• The Stellar Initial Mass Function in Early-Type Galaxies From Absorption Line Spectroscopy. II. Results
• A direct dynamical measurement of the Milky Way's disk surface density profile, disk scale length, and dark matter profile at 4 kpc < R < 9 kpc
• A Catalog of Detailed Visual Morphological Classifications for 14034 Galaxies in the Sloan Digital Sky Survey
• The Data Reduction Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey
• First GLIMPSE Results on the Stellar Structure of the Galaxy
• The Wisconsin H-Alpha Mapper Northern Sky Survey
• Hot subluminous stars
• The SDSS-IV MaNGA Sample: Design, Optimization, and Usage Considerations
• The warm ionized medium in spiral galaxies
• SDSS IV MaNGA - Spatially resolved diagnostic diagrams: A proof that many galaxies are LIERs
• Variations in the Galactic star formation rate and density thresholds for star formation
• The Data Analysis Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey: Overview
• Toward a Unification of Star Formation Rate Determinations in the Milky Way and Other Galaxies
• Galaxy Zoo: Bars in Disk Galaxies
• Dynamical Friction and the Distribution of Dark Matter in Barred Galaxies
• SDSS-IV/MaNGA: Spectrophotometric Calibration Technique
• The Nature of LINER-like Emission in Red Galaxies
• Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18
• The SAGA Survey: I. Satellite Galaxy Populations Around Eight Milky Way Analogs
• 3D Integral Field Observations of Ten Galactic Winds - I. Extended phase (>10 Myr) of mass/energy injection before the wind blows
• Cloud-Scale Molecular Gas Properties in 15 Nearby Galaxies
• The Data Analysis Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey: Emission-Line Modeling
• Marvin: A Toolkit for Streamlined Access and Visualization of the SDSS-IV MaNGA Data Set
• A sub-parsec resolution simulation of the Milky Way: Global structure of the ISM and properties of molecular clouds
• Star formation rates and efficiencies in the Galactic Centre
• Galaxy Zoo and ALFALFA: Atomic Gas and the Regulation of Star Formation in Barred Disc Galaxies
• The two-phase formation history of spiral galaxies traced by the cosmic evolution of the bar fraction
• Catalogues of isolated galaxies, isolated pairs, and isolated triplets in the local Universe
• The Star Formation Efficiency per Free Fall Time in Nearby Galaxies
• Galaxy Zoo: comparing the demographics of spiral arm number and a new method for correcting redshift bias
• Time Inference with MUSE in Extragalactic Rings (TIMER): Properties of the Survey and High-Level Data Products
• Nearby early-type galaxies with ionized gas.IV. Origin and powering mechanism of the ionized gas
• SDSS IV MaNGA - The spatially resolved transition from star formation to quiescence
• Two modes of gas flow in a single barred galaxy
• Galaxy Zoo: Bar Lengths in Nearby Disk Galaxies
• Mass inflow rate into the Central Molecular Zone: observational determination and evidence of episodic accretion
• Galaxy Zoo: the effect of bar-driven fueling on the presence of an active galactic nucleus in disc galaxies
• Effects of Gas on Formation and Evolution of Stellar Bars and Nuclear Rings in Disk Galaxies
• HI-MaNGA: HI Followup for the MaNGA Survey
• The Effects of Diffuse Ionized Gas and Spatial Resolution on Metallicity Gradients: TYPHOON Two-Dimensional Spectrophotometry of M83
• Galaxy And Mass Assembly (GAMA): In Search of Milky-Way Magellanic Cloud Analogues
• Photoionization of High Altitude Gas in a Supernova-Driven Turbulent Interstellar Medium
• Monte Carlo Photoionization Simulations of Diffuse Ionized Gas
• Unveiling the Milky Way: A New Technique for Determining the Optical Color and Luminosity of our Galaxy
• The HI Morphology and Stellar Properties of Strongly Barred Galaxies: support for bar quenching in massive spirals
• SDSS-IV MaNGA: Stellar Population Gradients Within Barred Galaxies
• A direct test of density wave theory in a grand-design spiral galaxy
• Insights on bar quenching from a multi-wavelength analysis: The case of Messier 95
• An Investigation of Diffuse Interstellar Gas toward a Large, Low Extinction Window into the Inner Galaxy
• Milky Way Analogues in MaNGA: Multi-Parameter Homogeneity and Comparison to the Milky Way
• Radiative transfer calculations of the diffuse ionised gas in disc galaxies with cosmic ray feedback
• Discovery of kpc-scale line emission in barred galaxies, not linked to AGN or star formation
• Shocks or Photoionization: Direct Temperature Measurements of the Low-Ionization Gas in Quiescent Galaxies
• Resolved and Integrated Stellar Masses in the SDSS-IV/MaNGA Survey, Paper II: Applications of PCA-based stellar mass estimates
• Resolved and Integrated Stellar Masses in the SDSS-IV/MaNGA Survey, Paper I: PCA spectral fitting & stellar mass-to-light ratio estimates
• Dynamical evolution driven by bars and interactions : Input from numerical simulations
• Discovery of diffuse optical emission lines from the inner Galaxy: Evidence for LI(N)ER-like gas

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• Galaxy Zoo: Stronger bars facilitate quenching in star forming galaxies
• SDSS-IV MaNGA: The link between bars and the early cessation of star formation in spiral galaxies
• The distribution of star formation in galactic bars as seen with H$\alpha$ and stacked GALEX UV imaging
• Are the Milky Way and Andromeda unusual? A comparison with Milky Way and Andromeda Analogs
• Galaxy Zoo: 3D -- Crowd-sourced Bar, Spiral and Foreground Star Masks for MaNGA Target Galaxies
• More insights into bar quenching. Multi-wavelength analysis of four barred galaxies
• Mass and Environment as Drivers of Galaxy Evolution. IV. On the Quenching of Massive Central Disk Galaxies in The Local Universe
• Bar quenching: Evidence from star-formation-rate indicators
• Photometric Signature of Ultra-Harmonic Resonances in Barred Galaxies
• Are Milky-Way-like galaxies like the Milky Way? A view from SDSS-IV/MaNGA
• The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar and APOGEE-2 Data