Art, Media, and Fashion: Negotiating Queerness and Catholicism Through Depictions of Saint Sebastian, From the 15 Century to the Present.

Queerness and Catholicism have historically been at odds with one another. The Church's condemnation of queer individuals was pervasive globally for centuries, yet one way queerness and Catholicism converge is via Saint Sebastian depictions. The purpose of this research is to examine how and why Sebastian, a Catholic saint, has come to serve as an icon for the queer community as well as how dress has been used in depicting shifting representations of the Saint from the 15 to 21 centuries.

R-process enrichment from a single event in an ancient dwarf galaxy.

Elements heavier than zinc are synthesized through the rapid (r) and slow (s) neutron-capture processes. The main site of production of the r-process elements (such as europium) has been debated for nearly 60 years. Initial studies of trends in chemical abundances in old Milky Way halo stars suggested that these elements are produced continually, in sites such as core-collapse supernovae.

Linking dwarf galaxies to halo building blocks with the most metal-poor star in Sculptor.

Current cosmological models indicate that the Milky Way's stellar halo was assembled from many smaller systems. On the basis of the apparent absence of the most metal-poor stars in present-day dwarf galaxies, recent studies claimed that the true Galactic building blocks must have been vastly different from the surviving dwarfs. The discovery of an extremely iron-poor star (S1020549) in the Sculptor dwarf galaxy based on a medium-resolution spectrum cast some doubt on this conclusion.

A common mass scale for satellite galaxies of the Milky Way.

The Milky Way has at least twenty-three known satellite galaxies that shine with luminosities ranging from about a thousand to a billion times that of the Sun. Half of these galaxies were discovered in the past few years in the Sloan Digital Sky Survey, and they are among the least luminous galaxies in the known Universe. A determination of the mass of these galaxies provides a test of galaxy formation at the smallest scales and probes the nature of the dark matter that dominates the mass density of the Universe.