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

Dust-Obscured galaxies (DOGs) are bright 24 um-selected sources with extremeobscuration at optical wavelengths. They are typically characterized by arising power-law continuum of hot dust (T_D ~ 200-1000K) in the near-IRindicating that their mid-IR luminosity is dominated by an an active galacticnucleus (AGN). DOGs with a fainter 24 um flux display a stellar bump in thenear-IR and their mid-IR luminosity appears to be mainly powered by dusty starformation. Alternatively, it may be that the mid-IR emission arising from AGNactivity is dominant but the torus is sufficiently opaque to make the near-IRemission from the AGN negligible with respect to the emission from the hostcomponent. In an effort to characterize the astrophysical nature of theprocesses responsible for the IR emission in DOGs, this paper exploits Herscheldata (PACS + SPIRE) on a sample of 95 DOGs within the COSMOS field. We derive awealth of far-IR properties (e.g., total IR luminosities; mid-to-far IR colors;dust temperatures and masses) based on SED fitting. Of particular interest arethe 24 um-bright DOGs (F_24um > 1mJy). They present bluer far-IR/mid-IR colorsthan the rest of the sample, unveiling the potential presence of an AGN. TheAGN contribution to the total 8-1000 um flux increases as a function of therest-frame 8 um-luminosity irrespective of the redshift. This confirms thatfaint DOGs (L_8 um< 10^12 L_sun) are dominated by star-formation while brighterDOGs show a larger contribution from an AGN.

The composite nature of Dust-Obscured Galaxies (DOGs) at z~2-3 in the COSMOS field: I. A Far-Infrared View