Nonparametric galaxy morphology from UV to submm wavelengths

Abstract

We present the first nonparametric morphological analysis of a set of spiral galaxies from UV to submm wavelengths. Our study is based on high-quality multi-wavelength imaging for nine well-resolved spiral galaxies from the DustPedia database, combined with nonparametric morphology indicators calculated in a consistent way using the {\tt{StatMorph}} package. We measure the half-light radius, the concentration index, the asymmetry index, the smoothness index, the Gini coefficient and the $M_{20}$ indicator in various wavebands from UV to submm wavelengths, as well as in stellar mass, dust mass and star formation rate maps. We find that the interstellar dust in galaxies is distributed in a more extended, less centrally concentrated, more asymmetric, and more clumpy way than the stars. This is particularly evident when comparing morphological indicators based on the stellar mass and dust mass maps. This should serve as a warning sign against treating the dust in galaxies as a simple smooth component. We argue that the nonparametric galaxy morphology of galaxies from UV to submm wavelengths is an interesting test for cosmological hydrodynamics simulations.

9 pages, 5 figures, accepted for publication in A&A

References in corpus (37)

• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• Simba: Cosmological Simulations with Black Hole Growth and Feedback
• Rotation-invariant convolutional neural networks for galaxy morphology prediction
• Structural Properties of Pseudo-Bulges, Classical Bulges and Elliptical Galaxies: an SDSS Perspective
• The Evolution of Galaxy Structure over Cosmic Time
• Galaxy Merger Morphologies and Time-Scales from Simulations of Equal-Mass Gas-Rich Disc Mergers
• Bulge mass is king: The dominant role of the bulge in determining the fraction of passive galaxies in the Sloan Digital Sky Survey
• The Structures of Distant Galaxies - III: The Merger History of over 20,000 Massive Galaxies at z < 1.2
• A radiation transfer model for the Milky-Way: I. Radiation fields and application to High Energy Astrophysics
• The Physical Nature of Rest-UV Galaxy Morphology During the Peak Epoch of Galaxy Formation
• DustPedia - A Definitive Study of Cosmic Dust in the Local Universe
• Radial distribution of dust, stars, gas, and star-formation rate in DustPedia face-on galaxies
• Two-dimensional multi-component photometric decomposition of CALIFA galaxies
• Galaxy And Mass Assembly (GAMA): ${\mathcal{M}}_{\star }-R_{\mathrm{e}}$ relations of $z=0$ bulges, discs and spheroids
• Far-infrared and dust properties of present-day galaxies in the EAGLE simulations
• Old and young stellar populations in DustPedia galaxies and their role in dust heating
• Galaxy Zoo: Secular evolution of barred galaxies from structural decomposition of multi-band images
• The distribution of interstellar dust in CALIFA edge-on galaxies via oligochromatic radiative transfer fitting
• High-resolution, 3D radiative transfer modeling : I. The grand-design spiral galaxy M51
• Modeling Dust and Starlight in Galaxies Observed by Spitzer and Herschel: The KINGFISH Sample
• Modelling the spectral energy distribution of galaxies. IV Correcting apparent disk scalelengths and central surface brightnesses for the effect of dust at optical and near-infrared wavelengths
• Galaxy morphological classification in deep-wide surveys via unsupervised machine learning
• The Herschel Exploitation of Local Galaxy Andromeda (HELGA) VII: A SKIRT radiative transfer model and insights on dust heating
• Diverse Structural Evolution at z > 1 in Cosmologically Simulated Galaxies
• Cool dust heating and temperature mixing in nearby star-forming galaxies
• The ISM scaling relations in DustPedia late-type galaxies: A benchmark study for the Local Universe
• Bulge plus disc and Sérsic decomposition catalogues for 16,908 galaxies in the SDSS Stripe 82 co-adds: A detailed study of the $ugriz$ structural measurements
• Spatial distribution of stellar mass and star formation activity at 0.2<z<1.2 across and along the Main Sequence
• High-Resolution Radiative Transfer Modelling of M33
• High-resolution, 3D radiative transfer modelling III. The DustPedia barred galaxies
• Merger induced clump formation in distant infrared luminous starburst galaxies
• Far-reaching Dust Distribution in Galaxy Disks
• High-resolution, 3D radiative transfer modelling. II. The early-type spiral galaxy M81
• Dust emissivity and absorption cross section in DustPedia late-type galaxies
• DustPedia - the relationships between stars, gas and dust for galaxies residing in different environments
• High-resolution, 3D radiative transfer modelling IV. AGN-powered dust heating in NGC 1068

Cited by in corpus (9)

• High-resolution synthetic UV-submm images for simulated Milky Way-type galaxies from the Auriga project
• High-resolution synthetic UV-submm images for Milky Way-mass simulated galaxies from the ARTEMIS project
• Towards robust determination of non-parametric morphologies in marginal astronomical data: resolving uncertainties with cosmological hydrodynamical simulations
• The atomic-to-molecular hydrogen transition in the TNG50 simulation: Using realistic UV fields to create spatially resolved HI maps
• Rest-Frame Near-Infrared Radial Light Profiles up to z=3 from JWST/NIRCam: Wavelength Dependence of the Sérsic Index
• Nonparametric galaxy morphology from stellar and nebular emission with the CALIFA sample
• Galaxies decomposition with spiral arms -- II: A multiwavelength case study of M 51
• Predicting far-infrared maps of galaxies via machine learning techniques
• Effect of AGN on the morphological properties of their host galaxies in the local Universe