The anatomy of an extreme starburst within 1.3Gyr of the Big Bang revealed by ALMA

Understand

We present further analysis of the [CII] 158$\mu$m fine structure line and thermal dust continuum emission from the archetype extreme starburst/AGN group of galaxies in the early Universe, BRI 1202-0725 at $z=4.7$, using the Atacama Large Millimeter Array.

• The group is long noted for having a closely separated (26kpc in projection) FIR-hyperluminous quasar host galaxy and an optically obscured submm galaxy (SMG).
• A short ALMA test observation reveals a rich laboratory for the study of the myriad processes involved in clustered massive galaxy formation in the early Universe.
• Strong [CII] emission from the SMG and the quasar have been reported earlier by Wagg et al.