English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Luminous infrared galaxies are systems enshrouded in dust, which absorbs mostof their optical/UV emission and re-radiates it in the mid- and far-infrared.Radio observations are largely unaffected by dust obscuration, enabling us tostudy the central regions of LIRGs in an unbiased manner. The main goal of thisproject is to examine how the radio properties of local LIRGs relate to theirinfrared spectral characteristics. Here we present an analysis of the radiocontinuum properties of a subset of the Great Observatories All-sky LIRG Survey(GOALS), which consists of 202 nearby systems (z<0.088). Our radio sampleconsists of 35 systems, or 46 individual galaxies, that were observed at both1.49 and 8.44 GHz with the VLA with a resolution of about 1 arcsec (FWHM). Theaim of the project is to use the radio imagery to probe the central kpc ofthese LIRGs in search of active galactic nuclei. We used the archival data at1.49 and 8.44 GHz to create radio-spectral-index maps using the standardrelation between flux density Sv and frequency v, S~v^-a, where a is the radiospectral index. By studying the spatial variations in a, we classified theobjects as radio-AGN, radio-SB, and AGN/SB (a mixture). We identified thepresence of an active nucleus using the radio morphology, deviations from theradio/infrared correlation, and spatially resolved spectral index maps, andthen correlated this to the usual mid-infrared ([NeV]/[NeII] and [OIV]/[NeII]line ratios and EQW of the 6.2 um PAH feature) and optical (BPT diagram) AGNdiagnostics. We find that 21 out of the 46 objects in our sample are radio-AGN,9 are classified as starbursts (SB), and 16 are AGN/SB. After comparing toother AGN diagnostics we find 3 objects out of the 46 that are identified asAGN based on the radio analysis, but are not classified as such based on themid-infrared and optical AGN diagnostics presented in this study.

Radio continuum properties of luminous infrared galaxies. Identifying the presence of an AGN in the radio