|
The SAMI instrument on the AAT is currently taking integral field spectroscopy of ~3000 nearby galaxies as part of the SAMI Galaxy Survey. This is the largest sample ever across a broad range in both stellar mass and environment (from field galaxies to groups to clusters). Based on ionised gas and stellar kinematics in the SAMI galaxies, I will discuss the relationship between dynamical misalignments and the influence of environment, morphology and timescales on the origin of gas in galaxies. The large size of SAMI is ideal to test previous findings (e.g. from ATLAS 3D) on a larger sample. The future however lies in much larger samples and Australia will again lead the world with a 100,000 nearby galaxy survey with Hector. Hector will be the new massively-multiplexed IFU spectrograph on a new 3 degree field top end for the Anglo-Australian Observatory and the next main dark-time instrument for the observatory. I will describe the science and instrument design for Hector and the current status of the project. |
|