Gas and star formation in galaxies are intimately linked to one another. Molecular hydrogen gas is the material out of which stars form, while the process of forming stars, in turn, depletes the reservoirs of gas in galaxies and builds up their stellar mass. Observations of star…
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Galaxies are natural laboratories for testing fundamental physics on the nature of the dark matter. MOdified Newtonian Dynamics (MOND) has been tested for over 20 years on small and large scales. While there are several versions of how MOND extrapolates to the large scales, and …
Interstellar dust is a ubiquitous component of galaxies, but some of its most fundamental properties are still poorly understood. This work analyzes the average extinction properties of dust in the Small Magellanic Cloud (SMC) through color-magnitude diagrams (CMDs) of resolved …
Major galaxy merging is a fundamental aspect of the hierarchical structure-growth scenario of the universe, and it is theoretical expected to contribute to several key aspects of galaxy evolution. As such, empirically identifying major mergers is a key methodological step toward…
The lifespan of a galaxy is punctuated by both mergers and flybys, yet most methods to track the galaxy assembly history within a cosmological simulation are designed to identify only mergers. Here, we present the full halo interaction network for several runs of the Illustris s…
The Epoch of Reionization or Cosmic Dawn is the period of time between the Dark Ages, when the universe was mainly comprised of neutral hydrogen and there were few sources of light, and around z ~ 6 (or ~ 1 billion years after the big bang) by which time the universe's hydrogen …