Astronomia UDP

Keerthana Jegatheesan

I’m PhD student in extragalactic astronomy, where I study galaxies in the local Universe using spectroscopy to understand how they form and evolve across cosmic time. I work primarily in the optical regime with integral field spectroscopy using SDSS-MaNGA.

Current position: PhD student

Project:

The many faces and personalities of galaxies are shaped by physical processes that affect their different components – like bulges and discs – in different ways and leave characteristic imprints on the light and spectra of these components. Disentangling their spectra can reveal vital clues that can be traced back in time to understand how galaxies and their components form and evolve across cosmic time. While individual galaxies give important clues in exquisite detail, a more statistical approach is needed to understand how galaxy populations evolve as a whole. During my PhD, I have been working on projects within the BUDDI-MaNGA framework, where we are building the first largest statistical sample of bulge and disc spectra to date, for local galaxies using recent data releases of MaNGA. With this novel approach, we examine the spectra of bulges and discs of spiral galaxies, to look for clues of formation pathways by reconstructing their mass assembly histories and studying their stellar populations. With projects within the BUDDI-MaNGA framework, we look for hints on the formation and evolution of bulges and discs in today’s galaxy population.

Aspectos destacados:

  • ANID Doctoral Scholarship

Publicaciones:

https://ui.adsabs.harvard.edu/search/fq=%7B!type%3Daqp%20v%3D%24fq_database%7D&fq_database=(database%3Aastronomy%20OR%20database%3Aphysics)&q=%20author%3A%22Jegatheesan%2C%20K%22&sort=date%20desc%2C%20bibcode%20desc&p_=0

Actividades extracurriculares:

Being a homebody, I’m usually curled up with a good book in my spare time. I also enjoy baking and exploring different teas, and my happy place is when I spend time with animals.