Research

Latest News:

Our second paper on the Lya luminosity function from MUSE has been accepted for publication in an A&A special issue dedicated to the ‘Hubble Ultra Deep Field’.

Our pilot study, focused on the Hubble Deep Field South, is now published in MNRAS! Developing the pipeline to transform these spectacular samples of MUSE Lya emitters into a luminosity function greatly helped me oil the wheels for our in-depth study of the Hubble Ultra Deep Field.


Previous Research Position

Until very recently (Sept 2014 – June 2017) I was working as a post-doctoral researcher at CRAL – Observatoire de Lyon, France.

My work has always focused on uncovering galaxies in the early Universe, studying their characteristic properties, and assessing how this population evolves over cosmic time.

Using deep data from the ground-breaking instrument ‘MUSE’ installed on the VLT, our team detected galaxies via their Lyman Alpha emission, in order to analyse the evolution of the Lyman Alpha luminosity function between redshifts 3.0 and 6.5.

Selecting these young galaxies allows us to better understand the building blocks of galaxies like the Milky Way that we see today, as well as helping to uncover the nature of the galaxies that were responsible for re-ionising the Universe.


In Lyon I led the study of the Lya luminosity function in the MUSE Deep-Fields. One of the major challenges for our study was the characterisation of the selection function of LAEs, and so much of my time went into developing a procedure through which to assess the completeness of our automatically-detected LAE catalogue.

Additionally, I contributed to the construction of MUSE catalogues of galaxies in the Hubble Deep Field South (HDFS) and the Hubble Ultra Deep Field (HUDF). In the former study my role was to compare MUSE redshift determination with photometric redshifts in the literature. We highlighted the advantages of blind spectroscopic surveys such as with MUSE for examining faint emission-line objects in section 4.5 of Bacon et al., (2015).

More recently I assisted in the spectroscopic identification of over 800 galaxies blindly detected with MUSE in a deep pointing of the HUDF. This catalogue is soon to be published (H. Inami; in prep) and will be essential in our verification of LAEs for the Lya luminosity function.

The MUSE Deep-Field team work in collaboration with the MUSE-Wide group based at AIP, Potsdam, Germany, the MUSE lensing-cluster group from IAP Toulouse, the CALENDS team based here in Lyon, and the rest of the MUSE consortium.


SEMINARS!

For the period between April 2015 and July 2016 I was in charge of CRAL seminars. This was in fact one of the main drivers for setting up my research website — to build a mechanism to deal with incoming requests (via a new web form) and to display information for invited speakers. Recently the official CRAL website has undergone some redevelopment and so I worked in conjunction with the IT team to replicate the pages and the mechanism I had designed. The official seminar pages are now hosted by CRAL at: CRAL Seminars Official


Previous Research:

During my PhD my work focused on unveiling the role of galaxies of different masses in the cosmic star formation rate density across a period of ~10 billion years. I assembled a sample of star- forming galaxies and determined that the characteristic masses of those undergoing the most active star formation has not evolved since the Universe was less than 5 Gyrs old.

We published two papers from this work, take a look here:

Evolution of Star Formation in the UKIDSS Ultra Deep Survey Field – I. Luminosity Functions and Cosmic Star Formation Rate out to z = 1.6

Evolution of Star Formation in the UKIDSS Ultra Deep Survey Field – II. Star Formation as a Function of Stellar Mass Between z = 1.46 and z = 0.63

The scientific highlights of the study are summarised in a poster (RHS) which I presented at the “Multiwavelength Surveys” conference in Dubrovnik 2014: