Wide-field 12CO (J = 1-0) Imaging of the Nearby Barred Galaxy M83 with NMA and Nobeyema 45-m telescope: Molecular Gas Kinematics and Star Formation Along the Bar

Abstract

We present the results of the wide-field ${}^{12}$CO (1--0) observations of the nearby barred galaxy M83 carried out with the Nobeyama Millimeter Array (NMA). The interferometric data are combined with the data obtained with the Nobeyama 45-m telescope to recover the total-flux. The target fields of the observations cover the molecular bar and part of the spiral arms, with a spatial resolution of ~110 pc x 260 pc. By exploiting the resolution and sensitivity to extended CO emission, the impact of the galactic structures on the molecular gas content is investigated in terms of the gas kinematics and the star formation. By inspecting the gas kinematics, the pattern speed of the bar is estimated to be 57.4 $\pm$ 2.8 km s${}^{-1}$ kpc${}^{-1}$, which places the corotation radius to be about 1.7 times the semi-major radius of the bar. Within the observed field, HII regions brighter than 10${}^{37.6}$ erg s${}^{-1}$ in Hα luminosity are found to be preferentially located downstream of the CO emitting regions. Azimuthal angular offsets between molecular gas and star forming (SF) calculated with the angular cross-correlation method confirm the trend. By comparing with a cloud orbit model based on the derived pattern speed, the angular offsets are found to be in accordance with a time delay of about 10 Myr. Finally, to test whether the arm/bar promote star formation efficiency (SFE $\equiv$ Star Formation Rate (SFR)/H${}_2$ mass), SFR is derived with the diffuse-background-subtracted H{alpha} and 24μm images. The arm-to-interarm ratio of the SFE is found to lie in the range of 2 to 5, while it is ~1 if no background-removal is performed. The CO-SF offsets and the enhancement of the SFE in the arm/bar found in the inner region of M83 are in agreement with the predictions of the classical galactic shock model.

arXiv comment21 pages, 21 figures

References in corpus (59)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• The Spitzer Space Telescope Mission
• Infrared Emission from Interstellar Dust. IV. The Silicate-Graphite-PAH Model in the Post-Spitzer Era
• The Milky Way in Molecular Clouds: A New Complete CO Survey
• THINGS: The HI Nearby Galaxy Survey
• The Calibration of Mid-Infrared Star Formation Rate Indicators
• Star Formation in NGC 5194 (M51a). II. The Spatially-Resolved Star Formation Law
• Star Formation in NGC5194 (M51a): The Panchromatic View from GALEX to Spitzer
• Secular Evolution Via Bar-Driven Gas Inflow: Results from BIMA SONG
• Flattening and truncation of stellar discs in edge-on spiral galaxies
• High Mass, OB Star Formation in M51 : HST Halpha and Palpha Imaging
• Nobeyama CO Atlas of Nearby Spiral Galaxies: Distribution of Molecular Gas in Barred and Non-barred Spiral Galaxies
• The Survey for Ionization in Neutral Gas Galaxies: I. Description and Initial Results
• Estimating the Star Formation Rate at 1 kpc Scales in Nearby Galaxies
• The Cepheid Distance to NGC 5236 (M 83) with the VLT
• The Survey for Ionization in Neutral-Gas Galaxies: III. Diffuse, Warm Ionized Medium and Escape of Ionizing Radiation
• Dynamics of Non-Steady Spiral Arms in Disk Galaxies
• Stellar Clusters in M83: Formation, evolution, disruption and the influence of environment
• Molecular Gas and Star Formation in Bars of Nearby Spiral Galaxies
• GMC formation by agglomeration and self gravity
• On-The-Fly Observing System of the Nobeyama 45-m and ASTE 10-m Telescopes
• The Luminosity, Mass, and Age Distributions of Compact Star Clusters in M83 Based on HST/WFC3 Observations
• The Super-linear Slope of the Spatially-Resolved Star Formation Law in NGC 3521 and NGC 5194 (M51a)
• HIIphot: Automated Photometry of HII Regions Applied to M51
• Interplay between Stellar Spirals and the ISM in Galactic Disks
• Dynamics of stars around spiral arms in an N-body/SPH simulated barred-spiral galaxy
• The Blueshifting and Baldwin effects for the [OIII] 5007 Emission Line in Type 1 Active Galactic Nuclei
• Molecular Gas Kinematics in Barred Spiral Galaxies
• The Most Completely Sampled Rotation Curves for Galaxies
• Molecular Gas, Dust and Star Formation in the Barred Spiral NGC 5383
• Determining Star Formation Timescale and Pattern Speed in Nearby Spiral Galaxies
• Geometrically Derived Timescales for Star Formation in Spiral Galaxies
• Arm & Interarm Star Formation in Spiral Galaxies
• The Incidence of Highly-Obscured Star-Forming Regions in SINGS Galaxies
• A New Catalog of HII Regions in M31
• Observational Evidence Against Long-Lived Spiral Arms in Galaxies
• Age distributions of star clusters in spiral and barred galaxies as a test for theories of spiral structure
• An HST Archival Survey of Feathers in Spiral Galaxies
• Molecular gas in the galaxy M83. I - The molecular gas distribution
• CARMA Survey Toward Infrared-bright Nearby Galaxies (STING): Molecular Gas Star Formation Law in NGC4254
• The Pattern Speeds of M51, M83 and NGC 6946 Using CO and the Tremaine-Weinberg Method
• Star Formation On Sub-kpc Scale Triggered By Non-linear Processes In Nearby Spiral Galaxies
• Offsets between H-alpha and CO arms of a spiral galaxy NGC 4254: A New Method for Determining the Pattern Speed of Spiral Galaxies
• Quantifying non-star formation associated 8um dust emission in NGC 628
• Molecular gas in the galaxy M83. II - Kinematics of the molecular gas
• Molecular Gas around the Double Nucleus in M83
• The Eastern Arm of M83 Revisited: High-Resolution Mapping of 12CO 1-0 Emission
• The Magellan/IMACS Catalog of Optical Supernova Remnant Candidates in M83
• HII Region Luminosity Function of the Interacting Galaxy M51
• Geometric Offsets Across Spiral Arms in M51: Nature of Gas and Star Formation Tracers
• The Virgo CO Survey: VI. Gas Dynamics and Star Formation Along the Bar in NGC 4303
• Distribution and Kinematics of Molecular Gas in Barred Spiral Galaxies. I. NGC 3504
• Nobeyama Millimeter Array Observations of the Nuclear Starburst of M83: A GMA Scale Correlation between Dense Gas Fraction and Star Formation Efficiency
• Where are the massive stars of the bar of NGC 1530 forming?
• Spiral inflow feeding the nuclear starburst in M83, observed in H-alpha emission with the GHAFAS Fabry-Perot interferometer
• ASTE CO(3-2) Mapping toward the Whole Optical Disk of M 83: Properties of Inter-arm GMAs
• A Polar-Nulceus Dark Lane in the Barred Spiral M83: Three-Dimensional Accretion in the Nucleus
• Dense Cloud Formation and Star Formation in a Barred Galaxy
• The relation between surface star formation rate density and spiral arms in NGC 5236 (M83)

Cited by in corpus (34)

• Stellar structures, molecular gas, and star formation across the PHANGS sample of nearby galaxies
• SPIRITS: Uncovering Unusual Infrared Transients With Spitzer
• Formation of Massive, Dense Cores by Cloud-Cloud Collisions
• Gas and Stellar Motions and Observational Signatures of Co-Rotating Spiral Arms
• Galaxy Zoo: Stronger bars facilitate quenching in star forming galaxies
• Environmental dependence of star formation induced by cloud collisions in a barred galaxy
• Eventful Evolution of Giant Molecular Clouds in Dynamically Evolving Spiral Arms
• ALMA ${}^{12}$CO (J=1--0) imaging of the nearby galaxy M83: Variations in the efficiency of star formation in giant molecular clouds
• Magnetic and gaseous spiral arms in M83
• Statistical Study of the Star Formation Efficiency in Bars: Is Star Formation Suppressed in Gas-Rich Bars?
• Star Formation in Disk Galaxies. III. Does stellar feedback result in cloud death?
• The variation in molecular gas depletion time among nearby galaxies: II the impact of galaxy internal structures
• The formation and early evolution of embedded star clusters in spiral galaxies
• A large amount of diffuse molecular gases in the bar of the strongly barred galaxy NGC1300: Cause of the low star formation efficiency
• CO Multi-line Imaging of Nearby Galaxies (COMING): VI. Radial variations in star formation efficiency
• Diverse Molecular Structures Across The Whole Star-Forming Disk of M83: High fidelity Imaging at 40pc Resolution
• CO Multi-line Imaging of Nearby Galaxies (COMING). III. Dynamical effect on molecular gas density and star formation in the barred spiral galaxy NGC 4303
• Chemical evolution along the circumnuclear ring of M83
• Molecular Gas Properties in M83 from CO PDFs
• Properties of giant molecular clouds in the strongly barred galaxy NGC1300
• Molecular gas and star formation within 12 strong galactic bars observed with IRAM-30m
• On the nature of the unusual transient AT 2018cow from HI observations of its host galaxy
• GMC Evolution in a Barred Spiral Galaxy with Star Formation and Thermal Feedback
• Large velocity dispersion of molecular gas in bars of strongly barred galaxies, NGC 1300 and NGC 5383
• Differences in star formation activity between tidally triggered and isolated bars: a case study of NGC 4303 and NGC 3627
• Fast cloud-cloud collisions in a strongly barred galaxy: Suppression of massive star formation
• Connection among environment, cloud-cloud collision speed, and star formation activity in the strongly barred galaxy NGC1300
• Study of star clusters in the M83 galaxy with a convolutional neural network
• Cloud-cloud collisions triggering star formation in galaxy simulations
• Giant Cometary HII Regions and Molecular Bow Shocks in Spiral Arms of Galaxies: M83
• Hierarchical Bayesian approach for estimating physical properties in nearby galaxies: Age Maps (Paper II)
• CO Multi-line Imaging of Nearby Galaxies (COMING). VII. Fourier decomposition of molecular gas velocity fields and bar pattern speed
• Properties of Molecular Gas in Galaxies in Early and Mid Stages of Interaction. III. Resolved Kennicutt-Schmidt Law
• The impact of bars on the properties of HII regions in the TIMER survey