Deep Investigation of Neutral Gas Origins

Early Science

ASKAP Early Science Plan

ASKAP Early Science is an observing program aimed at producing scientifically useful data. It will commence when an array of twelve ASKAP antennas fitted with CSIRO’s Mk II phased array feeds (the instrument known as ASKAP-12) has been commissioned and scientifically verified. Early science observations will be carried out in parallel with the deployment of the Mk II phased array feeds on further ASKAP antennas.

The ASKAP Early Science Plan is an ASKAP-12 pathfinder to the full DINGO survey. This project will use the unique wide-field capabilities ASKAP to capture the emission of over 10,000 galaxies in a single pointing. By using HI stacking techniques and known GAMA redshifts 0.1<z<0.43 from the G23 field, this emission can combined to yield measurable HI profiles.

GAMA field G23 with ASKAP pointings overlaid

View the ASKAP Early Science Program here. View information on the DINGO program here.

VLA Survey of G09

This is an on-going VLA pathfinder to the full DINGO survey, awarded time in 2014B and 2016A semesters.

Principal goals are to:

  • study the evolution of HI across cosmic time . The project will use HI stacking techniques to sample a cosmologically representative volume in HI emission to measure evolution in the neutral atomic hydrogen content of the Universe (ΩHI) over the past 4 Gyr
  • study the relationship between HI content and environment z<0.1. Combine VLA HI data and GAMA group metrics to measure the dependance of HI content on environment (pair, group, filament, void, halo mass) as well as to examine the impact of star formation and AGN activity on the neutral ISM.
Group Progress Plot
Stacking Progress Plot