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  1. ; ; ; ; ( , American Astronomical Society meeting)
    The Arecibo Pisces-Perseus Supercluster Survey (APPSS) will map out infall to the Pisces-Perseus Supercluster filament using redshift-independent distances from the Baryonic Tully-Fisher Relation (BTFR). Here we examine the properties of outliers to the BTFR, with an emphasis on low mass galaxies. Our goal is partly to determine which galaxies should be excluded from our analysis in order to use the BTFR to obtain accurate distances, and partly to understand the dynamical properties of this population of galaxies. This work has been supported by NSF grant AST-1637339. 
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    Accepted Manuscript Full Text Available
  2. ; ; ; ; ; ; ; ; ( , American Astronomical Society meeting)
    In preparation for comparison with the Arecibo Pisces-Perseus Supercluster Survey (APPSS), we present the theoretically expected density and velocity profiles for large-scale (~ 50 Mpc) filaments from the Millennium simulation. We use an observationally-friendly method to identify filaments using the positions of large groups of galaxies, and average filaments together to find the typical structure of a filament in terms of cylindrical density profile and velocity infall profile. Both profiles can be fit by simple functions, but show a large scatter across the population of filaments. We are in the process of categorizing filaments to facilitate comparison with observations of specific filaments, like the Pisces-Perseus Supercluster filament. This work has been supported by NSF grant AST-1637339. 
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    Accepted Manuscript Full Text Available