About me

My name is Clár-Bríd (CB) Tohill and I am a PhD student at the University of Nottingham under the supervision of Dr Steven Bamford and Professor Christopher Conselice. My research focuses on galaxy morphology and evolution with machine learning. My current work is focused on applying unsupervised machine learning techniques to understand and classify the morphology of high redshift galaxies. I have previously worked as a support astronomer for the INT at the Isaac Newton Group of telescopes on La Palma.

Publications

5 publications in peer-reviewed journals, including 3 as first author.

  • Tohill, C., Bamford, S., Conselice, C., Ferreira, L., Harvey, T., Adams, N., and Austin, D., 2024, A Robust Study of High-Redshift Galaxies: Unsupervised Machine Learning for Characterising morphology with JWST up to z ~ 8., ApJ, 2024

  • Tohill, C., Bamford, S., Conselice, C., 2023, Exploring the Morphologies of High Redshift Galaxies with Machine Learning, Mem. S.A.It., 2023

  • Ferreira, L., Conselice, C., Sazonova, E., Ferrari, F., Caruana, J., Tohill, C., et al. The JWST Hubble Sequence: The Rest-Frame Optical Evolution of Galaxy Structure at 1.5 > z > 8, 2023

  • Ferreira, L., Conselice, C., Kuchner, U., Tohill, C., A Simulation-driven Deep Learning Approach for Separating Mergers and Star-forming Galaxies: The Formation Histories of Clumpy Galaxies in All of the CANDELS Fields ApJ, vol. 931, no.1, 2022

  • Tohill, C., Ferreira, L., Conselice, C., Bamford, S., Ferrari, F., Quantifying Non-parametric Structure of High-redshift Galaxies with Deep Learning Apj, vol. 916, 4, 2021

Presentations

Below is a list of academic talks I have given

November 2023European Space Astronomy Centre, Madrid, Spain
Understanding the Morphology of High Redshift Galaxies Using Unsupervised Machine Learning and JWST
June 2022European Astronomical Society Annual meeting , Valencia, Spain
Exploring the Morphologies of High Redshift Galaxies with Machine Learning
Feb 2022 Isaac Newton Group of Telescopes, La Palma, Spain
Galaxy Morphology with Machine Learning
June 2021 American Astronomical Society 238th Meeting ,online
Galaxy structure with deep learning
June 2021 University of Nottingham, Nottingham, UK
Utilising Unsupervised Machine Learning to Investigate Galaxy Morphology
May 2021 Royal Astronomical Society, London, UK
Measuring the Structure of High Redshift Galaxies with Deep Learning
May 2020 University of Nottingham, Nottingham, UK
Understanding the Populations of High Redshift Galaxies

Posters and other contributions

June 2021European Astronomical Society Annual meeting , Leiden, Netherlands (Online)
Measuring the Structure of High Redshift Galaxies with Deep Learning, Poster
Sep 2020 Royal Astronomical Society Annual Meeting, London, UK
Predicting Galaxy Parameters with Machine Learning, Poster
March 2020 Postgraduate Women in Physics Conference ,University of Nottingham, Nottingham, UK
Predicting Galaxy Parameters with Machine Learning, Poster (3rd place)

Observing Experience


Isaac Newton Telescope, Roque de Los Muchachos
  • > 60 nights service and visitor mode as Support Astronomer
  • Training the next generation INT support astronomers
  • H-alpha selected extreme galaxies with J-PLUS: the local analogs to z 8 galaxies, Oct 2022, Co-I
  • Extreme emission line galaxies with J-PLUS, Sep 2022, PI
  • Orbital modelling and dynamics of new Cataclysmic Variables, Nov 2021, PI
William Hershel Telescope, Roque de Los Muchachos
  • 3 nights WEAVE comissioning
Nordic Optical Telescope, Roque de Los Muchachos
  • 1 night service
Nickle Telescope, Lick Observatory
  • 1 night remote observing
Beacon Observatory, University of Kent
  • 6 nights observing

Outreach

Inflativerse

I am a manager of the University of Nottingham's Inflatable planetarium which we bring to different primary schools and deliver sessions about the night sky and galaxy classification! During the pandemic I, along with the other managers of the Inflativerse spent time designing different sessions that could be delivered virtually to maintain this contact with schools. We developed sessions about galaxy classification, constellations, learning about what astronomers do and how to navigate the North sky!

I'm a Scientist

I'm a Scientist is a student lead online outreach activity that aims to connect students in school with scientists from a range of topics. It gives students the oppertunity to ask questions about what it's like to be a scientist, learn about different university oppertunities and other questions they may have about their chosen topic. I am one of the scientists currently taking part in the physics zone.

CV

You can read my CV online here, or download it as a PDF.

Contact Me

If you want to get in contact with me to discuss any of my work just send me an email at clar-brid.tohill@nottingham.ac.uk