ALMA 400pc Imaging of a z=6.5 Massive Warped Disk Galaxy

Understand

We present 0.075 (~400 pc) resolution ALMA observations of the [CII] and dust continuum emission from the host galaxy of the z=6.5406 quasar, P036+03.

• We find that the emission arises from a thin, rotating disk with an effective radius of 0.21" (1.1 kpc).
• The velocity dispersion of the disk is consistent with a constant value of 66.4+-1.0 km/s, yielding a scale height of 80+-30 pc.
• The [CII] velocity field reveals a distortion that we attribute to a warp in the disk.