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 a Plateau de Bure interferometer search for CII-158$\mu$m emissionfrom HCM6A, a lensed Lyman-$\alpha$ emitter (LAE) at $z = 6.56$. Ournon-detections of CII-158$\mu$m line emission and 1.2mm radio continuumemission yield $3\sigma$ limits of L$_{\rm CII} < 6.4 \times 10^7 \times(\Delta V/100 km s^{-1})^{1/2}$ L$_\odot$ on the CII-158$\mu$m line luminosityand S$_{\rm 1.2mm} < 0.68$ mJy on the 1.2mm flux density. The local conversionfactor between L$_{\rm CII}$ and star formation rate (SFR) yields an SFR $<4.7$ M$_\odot$ yr$^{-1}$, $\approx 2$ times lower than that inferred from theultraviolet (UV) continuum, suggesting that the local factor may not beapplicable in high-$z$ LAEs. The non-detection of 1.2mm continuum emissionyields a total SFR $< 28$ M$_\odot$/yr; any obscured star formation is thuswithin a factor of two of the visible star formation. Our best-fit model to therest-frame UV/optical spectral energy distribution of HCM6A yields a stellarmass of $1.3 \times 10^9$ M$_\odot$ and an SFR of ~10 M$_\odot$/yr, withnegligible dust obscuration. We fortuitously detect CO J=3-2 emission from a$z=0.375$ galaxy in the foreground cluster Abell370, obtaining a CO lineluminosity of L$^\prime ({\rm CO}) > (8.95 \pm 0.79) \times 10^8$ K km s$^{-1}$pc$^2$, and a molecular gas mass of M$({\rm H_2}) > (4.12 \pm 0.36) \times10^9$ M$_\odot$, for a CO-to-H$_2$ conversion factor of 4.6 M$_\odot$ (K kms$^{-1}$ pc$^2$)$^{-1}$.

A search for CII-158$\mu$m line emission in HCM\,6A, a Lyman-$\alpha$ emitter at $z=6.56$