Research

My research focuses on galaxy evolution and cosmology.

I study galaxy evolution using large imaging and spectroscopic surveys of the galaxy population. These are particularly successful tools in trying to identify and disentangle the various processes responsible for the evolution of galaxies. Such surveys allow us to systematically study galaxies at different cosmological epochs as a function of key parameters, such as dynamical, stellar and gas mass, environment, star formation activity, stellar age, stellar and gas-phase metallicity, size, morphology, dynamical state, AGN activity, dust content, etc. The ever more detailed observational picture of galaxy evolution provided by these studies plays a key role in further developing our understanding of galaxies.

I am also working towards the realisation of a new class of cosmological observations often referred to as 'real-time cosmology'. The idea is to use extremely precise measurements over a time span of a several years to directly detect tiny changes in the Universe on cosmological scales due to its expansion. In particular, observations of the so-called 'redshift drift' would provide a direct and dynamical measurement of the expansion history of the Universe. This experiment is currently not possible and requires the next generation of observational facilities currently under construction or in planning.

Below is a list of past and present projects I am or have been involved with.

 

Science Projects

WAVES
Wide Area VISTA Extragalactic Survey

GAMA
Galaxy And Mass Assembly

SAMI
SAMI IFU Galaxy Survey

H-ATLAS
Herschel Astrophysical Terahertz Large Area Survey

VIKING
VISTA Kilo-Degree Infrared Galaxy Survey

DINGO
Deep Investigation of Neutral Gas Origins

MGC
Millennium Galaxy Catalogue

CODEX
Cosmic dynamics

QSOAL
Other QSO absorption line projects

z12
On cosmological distances

DEBRIS
A study on Automated detection and analysis of object motion in CCD sky images

 

Instrumentation Projects

HIRES
High Resolution Spectrograph for the E-ELT

4MOST
4-metre Multi-Object Spectroscopic Telescope

E-ELT
European Extremely Large Telescope

SINFONI
Spectrograph for INtegral Field Observations in the Near Infrared

 

Code

vpguess
QSO absorption line fitting – a graphical interface to vpfit

eltpsffit
A PSF fitting tool

PGPLOT_mouse
A patch for PGPLOT that boosts mouse functionality in interactive programs