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A sub-kiloparsec scale view of star formation in M31
This dissertation examines the properties of star formation in the nearest large Milky Way- like galaxy, the Andromeda Galaxy (M31). Using resolved star data from the Hubble Space Telescope obtained as part of the Panchromatic Hubble Andromeda Treasury (PHAT), I model the optical color-magnitude diagrams (CMDs) of > 9000 ...
Building galaxy models with self-consistent prescriptions for stellar and nebular emission
A galaxy's spectrum is the sum of light emitted by stars and gas, modulated by intervening dust. Translating between the observed flux from galaxies and meaningful astrophysical quantities relies on ``stellar population synthesis'' (SPS) models. These models include descriptions for the light produced by stars and dust in ...
The Astrophysics of Active Galactic Nuclei Variability in Large Scale Spectroscopic Surveys
More than 50 years after the initial discovery of the extragalactic nature of quasi-stellar objects (quasars) by Schmidt (1963), studies of luminous active galactic nuclei (AGN) have revolutionized our understanding of black hole growth across cosmic time, accretion and jet physics, as well as galaxy evolution and cosmology. ...
Galactic Gas Flows from Halo to Disk: Kinematics and Tomography in the Milky Way’s Low-Velocity Circumgalactic Medium
The evolution of galaxies is closely linked to the exchange of gas between their disk and the circumgalactic medium (CGM) – the massive, extended, diffuse halo of gas in which galaxies are embedded. Recent advances in high-resolution spectroscopy have enabled observers to firmly establish the key role played by the CGM in the ...
The Physical Connection between Cosmic Gas Flows, Supermassive Black Holes Growth, and Galaxy Evolution
The circumgalactic medium (CGM) represents a key interface in the processes of galactic evolution. Here, the gas which enters galaxies through mergers and filaments and the gas expelled from a disk through stellar and black hole feedback intersect, maintaining a reservoir that will shape a galaxy throughout its lifetime. ...