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Galaxy Zoo: A Catalog Of ~1000 Occulting Pairs In The Desi Legacy Survey For Dust Studies, Trevor A. Butrum, Benne Holwerda
Galaxy Zoo: A Catalog Of ~1000 Occulting Pairs In The Desi Legacy Survey For Dust Studies, Trevor A. Butrum, Benne Holwerda
The Cardinal Edge
Occulting pairs of galaxies, where a foreground galaxy partially overlaps a background galaxy, are becoming increasingly valuable for studying dust attenuation and other dust properties in galaxies. These occulting systems present a unique opportunity to derive attenuation measurements by modelling the light from both galaxies and inferring the missing light in the overlapping regions, leaving only the light attenuated by dust remaining. However, the current master catalogue of these pairs is still relatively limited in number, and expanding such a catalogue will provide significant advantages. To achieve this, we use galaxies classified as "overlapping" from Galaxy Zoo DECaLS (GZD-1, 2, …
High Polarization In Narrow Line Seyfert 1 Galaxy Iras 1239.7+3333, Bryn Connelly, Dirk Grupe Phd
High Polarization In Narrow Line Seyfert 1 Galaxy Iras 1239.7+3333, Bryn Connelly, Dirk Grupe Phd
The Cardinal Edge
IRAS 1239 is a narrow line Seyfert 1 galaxy discovered with the ROSAT All-Sky survey. It is interesting because it shows very high polarization, but very little cold X-ray absorption, potentially revealing more insight into the classification of Seyfert galaxies. An Active Galactic Nucleus, or AGN, is an accreting black hole at the center of a galaxy. Galaxies containing these AGNs are known as active galaxies. There are several different types of active galaxies, including Seyfert galaxies. These are a common galaxy type, making up around 10% of galaxies. They are classified by having strong emission lines and detectable host …
The Loneliest Galaxies In The Universe: A Gama And Galaxyzoo Study On Void Galaxy Morphology, Lori E. Porter, Benne W. Holwerda
The Loneliest Galaxies In The Universe: A Gama And Galaxyzoo Study On Void Galaxy Morphology, Lori E. Porter, Benne W. Holwerda
The Cardinal Edge
The large-scale structure (LSS) of the universe is comprised of galaxy filaments, tendrils, and voids. The majority of the universe’s volume is taken up by these voids, which exist as underdense, but not empty, regions. The galaxies found inside voids are void galaxies and expected to be some of the most isolated objects in the universe. However, their standard morphology remains poorly studied. This study, using the Galaxy and Mass Assembly (GAMA) survey and Galaxy Zoo’s SDSS survey, aims to remedy this. To do so, survey results from GAMA have been plotted using the Sérsic index (n) to analyze morphology, …