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

We report on observations of redshifted CO(1-0) line emission andobserved-frame $\rm\sim$ 30GHz radio continuum emission from fiveultra-luminous, mid-IR selected hot, Dust-Obscured Galaxies (Hot DOGs) at$z\rm\gtrsim$ 3 using the Karl G. Jansky Very Large Array. We detect CO(1-0)line emission in all five Hot DOGs, with one of them at high signal to noise.We analyse FIR-radio spectral energy distributions, including dust, free-freeand synchrotron emission for the galaxies. We find that most of the 115 GHzrest-frame continuum is mostly due to synchrotron or free-free emission, withonly a potentially small contribution from thermal emission. We see a deficitin the rest-frame 115 GHz continuum emission compared to dusty star-forminggalaxies (DSFGs) and sub-millimetre galaxies (SMGs) at high redshift,suggesting that Hot DOGs do not have similar cold gas reserves compared withstar-forming galaxies. One target, W2305-0039, is detected in the FIRST 1.4 GHzsurvey, and is likely to possess compact radio jets. We compare to theFIR-radio correlation, and find that at least half of the Hot DOGs in oursample are radio-quiet with respect to normal galaxies. These findings suggestthat Hot DOGs have comparably less cold molecular gas than star-forminggalaxies at lower, $z\rm\sim$ 2 redshifts, and are dominated by powerful, yetradio-quiet AGN.

Cold Molecular Gas and Free-Free Emission from Hot, Dust-Obscured Galaxies at $z$~3