Dr. Abigail Frost

Astronomer & Astrophysicist

Massive stars & multiplicity
Star formation
Observing
Diversity & sustainability

About me

Hi there! Thanks for checking out my website. My name is Abigail, and I am an operations staff astronomer working for the European Southern Observatory (ESO). Working at their Chilean base, I split my time between supporting the operations of Paranal Observatory (top right) in the Atacama Desert in northern Chile and doing my own astrophysics research at the science offices in Santiago, Chile. My duties involve taking observations with the Very Large Telescope/Interferometer (VLTI) and being involved with instrument scientist activities for the mid-infrared instrument VISIR.

My journey into astrophysics started with my masters degree (MPhys) at the University of Exeter, where for my masters project I worked with Prof. Stefan Kraus on millimetre interferometry of a massive forming star. I went on to study for my PhD in Astrophysics at the University of Leeds, where I focused on the study of the circumstellar environments of massive forming stars in the infrared. 

Following the completion of my PhD, I became a postdoctoral research associate at KU Leuven (Belgium), working as part of the ERC MULTIPLES project between January 2020-2023. My work there focused on using infrared interferometric data from the VLTI to investigate the multiplicity of massive stars throughout their evolution. During this position I co-supervised a PhD student from the group and also took on bachelors students. I also became, in tandem, a visiting research fellow at the University of Leeds between January 2021-2023. During my time at KU Leuven I observed with the HERMES spectrograph at the Mercator Telescope (bottom right) in La Palma. 

When I'm not doing research, I enjoy advocating for diversity and sustainability in astronomy. I am a member of Astronomers for Planet Earth, an organisation that seeks to mobilise the power of the astronomy community against the climate crisis. I also love engaging in outreach, in particular at schools (e.g. through 'Skype a Scientist'). I also really enjoy scientific writing. In the UK, I have written articles for Popular Astronomy MagazineSky at Night magazine and served as a scientific editor and co-author of the technical article of the astrophysics issue of SEISMA magazine (a publication which brings the arts and sciences together). I have also written a blog post for POC Squared (an organisation which seeks to highlight the contributions of people of colour in science).

Improving diversity in astronomy is a priority of mine, which I pursue through highlighting the contributions of those from under-represented groups to science and discussing and addressing the issues surrounding inclusion and diversity. Together with Dr. Gabriele Betancourt-Martinez, I started the IDEEA (Inclusion, Diversity and Equity in European Astronomy) group, where we are fostering a community where anyone can come together and discuss DEI issues, share resources and help take action to improve diversity and inclusion in astronomy. 

I also dedicate my time to mentoring and am passionate about getting people interested in science. I have skyped high-school students in 1-on-1 sessions when they have questions about pursuing physical sciences and astronomy as a career and have been a mentor and mentee in mentorship programs at various institutions. In tandem, I have also served on hiring committees for PhD and fellowship positions, respectively.

My research in a nutshell

Massive stellar multiplicity

Within the ERC MULTIPLES project group at KU Leuven, I used infrared interferometry to search for and characterise binary and multiple massive stellar systems. In particular I worked with, and continue to handle, data from the GRAVITY and PIONIER instruments at the VLTI. I continue to collaborate with the group and others on such research and you can view a few of my ongoing/previous projects here here.

The circumstellar environments of massive young stellar objects

Another of my interests is studying the environments and disks surrounding massive forming stars. While low-mass star formation has been observed to the point where multiple disc phases have been observed and identified, our picture of massive star is more complex and less well characterised. I studied massive forming stars extensively during my PhD, using a combination of infrared interferometry, imaging, spectral energy distributions and 3D radiative transfer modelling. I am currently involved in a number of follow-up projects focussed on this work using MATISSE, spase-aperture-masking (SAM, where an imaging telescope produces interferometric observables through the use of a mask) and have future plans to use the Extremely Large Telescope that is under construction in Chile in the future.

Please check out the projects tab for more specific insights into my recent work. 

My career