Delta på disputasen
PhD disputasen og prøveforelesningen vil foregå 100% fysisk. Rommet åpnes for deltakelse like før disputasen starter, og stenger for nye deltakere omtrent 15 minutter etter at disputasen har startet.
Delta på prøveforelesning - 18. januar kl. 10:15 (Aud. 209, Svein Rosselands Hus)
"The hunt for the earliest galaxies"
Kreeringssammendrag
I avhandlingen min studerte jeg den molekylære gassfasen i lokale (ultra-)lysende infrarøde galakser. Disse galaksene kjennetegnes av intens stjernedannelse og aktive galaksekjerner, noe som fører til kraftige galaktiske utstrømninger som sprer gass over store avstander. Funnene mine avslører ekstreme eksitasjonsforhold for gass i det interstellare mediet, og jeg avdekker en mulig sammenheng med de ekstreme galaktiske utstrømningene i disse galaksene.
Hovedfunn:
In my thesis, I investigated local (ultra-)luminous infrared galaxies, typically identified as galaxy mergers. These galaxies are fascinating due to their intense star formation and active galactic nuclei, which can lead to powerful galactic outflows spreading gas across large distances. My research focused on the molecular gas phase, a critical component for star formation and the evolution of galaxies. Using high-sensitivity observations, I investigated carbon monoxide and atomic carbon emissions to gain insights into the properties of their molecular gas. Special attention was given to the extended and diffuse gas components, which could be linked to galactic outflows. My findings revealed a wide range of gas excitation states, pointing to extreme conditions throughout the interstellar medium of these galaxies. Moreover, I identified a potential connection between high gas excitation and the presence of powerful outflows. My work highlights the importance of sensitive observations for capturing the full picture of these extreme sources, especially in understanding how star formation and galactic nuclei activities impact their evolution.
