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

In the course of our 870um APEX/LABOCA follow up of the Herschel LensingSurvey we have detected a source in AS1063 (RXC J2248.7-4431), that has nocounterparts in any of the Herschel PACS/SPIRE bands, it is a Herschel'drop-out' with S_870/S_500>0.5. The 870um emission is extended and centered onthe brightest cluster galaxy suggesting either a multiply imaged backgroundsource or substructure in the Sunyaev-Zel'dovich (SZ) increment due toinhomogeneities in the hot cluster gas of this merging cluster. We discuss bothinterpretations with emphasis on the putative lensed source. Based on theobserved properties and on our lens model we find that this source could be thefirst SMG with a moderate far infrared luminosity (L_FIR<10^12 L_sol) detectedso far at z>4. In deep HST observations we identified a multiply imaged z~6source and we measured its spectroscopic redshift z=6.107 with VLT/FORS. Thissource could be associated with the putative SMG but it is most likely offsetspatially by 10-30kpc and they could be interacting galaxies. With a FIRluminosity in the range [5-15]x10^{11} L_sol corresponding to a star formationrate in the range [80-260]M_sol/yr, this SMG would be more representative thanthe extreme starbursts usually detected at z>4. With a total magnification of~25 it would open a unique window to the 'normal' dusty galaxies at the end ofthe epoch of reionization.

An extended Herschel drop-out source in the center of AS1063, a 'normal' dusty galaxy at z=6.1 or SZ substructures?