The temperature dependence of the far-infrared-radio correlation in the Herschel-ATLAS

Abstract

We use 10,387 galaxies from the Herschel Astrophysical TeraHertz Large Area Survey (H-ATLAS) to probe the far-infrared radio correlation (FIRC) of star forming galaxies as a function of redshift, wavelength, and effective dust temperature. All of the sources in our 250 μm-selected sample have spectroscopic redshifts, as well as 1.4 GHz flux density estimates measured from the Faint Images of the Radio Sky at Twenty centimetres (FIRST) survey. This enables us to study not only individual sources, but also the average properties of the 250 μm selected population using median stacking techniques. We find that individual sources detected at $\ge 5\sigma$ in both the H-ATLAS and FIRST data have logarithmic flux ratios (i.e. FIRC $q_{\lambda }$ parameters) consistent with previous studies of the FIRC. In contrast, the stacked values show larger $q_{\lambda }$, suggesting excess far-IR flux density/luminosity in 250μm selected sources above what has been seen in previous analyses. In addition, we find evidence that 250 μm sources with warm dust SEDs have a larger 1.4 GHz luminosity than the cooler sources in our sample. Though we find no evidence for redshift evolution of the monochromatic FIRC, our analysis reveals significant temperature dependence. Whilst the FIRC is reasonably constant with temperature at 100 μm, we find increasing inverse correlation with temperature as we probe longer PACS and SPIRE wavelengths. These results may have important implications for the use of monochromatic dust luminosity as a star formation rate indicator in star-forming galaxies, and in the future, for using radio data to determine galaxy star formation rates.

Accepted by MNRAS; 12 pages, 10 figures

References in corpus (9)

• A simple model to interpret the ultraviolet, optical and infrared emission from galaxies
• Dust Masses, PAH Abundances, and Starlight Intensities in the SINGS Galaxy Sample
• Radio sources in the 6dFGS: Local luminosity functions at 1.4 GHz for star-forming galaxies and radio-loud AGN
• Dust in starburst nuclei and ULIRGs: SED models for observers
• Exploring the infrared/radio correlation at high redshift
• Herschel-ATLAS: Properties of dusty massive galaxies at low and high redshifts
• Extending the infrared radio correlation
• The FIR-Radio Relationship at High and Low Redshift
• Radio source stacking and the infrared / radio correlation at microJy flux densities

Cited by in corpus (31)

• The LOFAR Two-metre Sky Survey - I. Survey Description and Preliminary Data Release
• LOFAR/H-ATLAS: The low-frequency radio luminosity - star-formation rate relation
• LOFAR/H-ATLAS: A deep low-frequency survey of the Herschel-ATLAS North Galactic Pole field
• The infrared-radio correlation of star-forming galaxies is strongly M${}_{\star }$-dependent but nearly redshift-invariant since z$\sim$4
• The MIXR sample: AGN activity versus star formation across the cross-correlation of WISE, 3XMM, and FIRST/NVSS
• Galaxy Evolution in the Radio Band: The Role of Starforming Galaxies and Active Galactic Nuclei
• The LOFAR Two-metre Sky Survey Deep fields: The star formation rate - radio luminosity relation at low frequencies
• Evidence that the AGN dominates the radio emission in z ~ 1 radio-quiet quasars
• The non-linear infrared-radio correlation of low-z galaxies: implications for redshift evolution, a new radio SFR recipe, and how to minimize selection bias
• The infrared-radio correlation of spheroid- and disc-dominated star-forming galaxies to z $\sim$ 1.5 in the COSMOS field
• Radio--Far infrared correlation in "blue cloud" galaxies with 0<z<1.2
• Radio-loudness along the quasar main sequence
• New insights into the interstellar medium of the dwarf galaxy IC 10: connection between magnetic fields, the radio--infrared correlation and star formation
• The relation between the turbulent Mach number and observed fractal dimensions of turbulent clouds
• The LOFAR Two-metre Sky Survey Deep fields: A new analysis of low-frequency radio luminosity as a star-formation tracer in the Lockman Hole region
• In pursuit of giants: II. Evolution of dusty quiescent galaxies over the last six billion years from the hCOSMOS survey
• A complete distribution of redshifts for sub-millimetre galaxies in the SCUBA-2 Cosmology Legacy Survey UDS field
• The LOFAR Two Metre Sky Survey Data Release 2: Probabilistic Spectral Source Classifications and Faint Radio Source Demographics
• A deep radio view of the evolution of the cosmic star-formation rate density from a stellar-mass selected sample in VLA-COSMOS
• Deep uGMRT observations of the ELAIS-North 1 field: statistical properties of radio--infrared relations up to $z\sim$2
• The MOSDEF Survey: Calibrating the relationship between H$\alpha$ star-formation rate and radio continuum luminosity at $1.4<z<2.6$
• Probabilistic and progressive deblended far-infrared and sub-millimetre point source catalogues I. Methodology and first application in the COSMOS field
• A model for the infrared-radio correlation of main-sequence galaxies at GHz frequencies and its variation on redshift and stellar mass
• The far-infrared/radio correlation for a sample of strongly lensed dusty star-forming galaxies detected by Herschel
• The XXL Survey: XLIII. The quasar radio loudness dichotomy exposed via radio luminosity functions obtained by combining results from COSMOS and XXL-S X-ray selected quasars
• Low-frequency radio spectra of submillimetre galaxies in the Lockman Hole
• The dependence of the IR-radio correlation on the metallicity
• Central star formation in double-peak gas rich radio galaxies
• Cosmic evolution of molecular gas mass density from an empirical relation between ${\mathrm{L}}_{1.4GHz}$ and ${\mathrm{L}}_{\mathrm{CO}}^{\prime }$
• The ALPINE-ALMA [CII] survey: The infrared-radio correlation and AGN fraction of star-forming galaxies at z $\sim$ 4.4-5.9
• Estimating Galaxy Star Formation Rates from Murchison Widefield Array Radio Continuum Emission