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1. HI data reduction for the Arecibo Pisces-Perseus Supercluster Survey

   Davis, C; Johnson, C; Craig, D; Haynes, M; Jones, M; Koopmann, R; Hallenbeck, G (January 2017, 229th Meeting of the American Astronomical Society)

   The Undergraduate ALFALFA team is currently focusing on the analysis of the Pisces-Perseus Supercluster to test current supercluster formation models. The primary goal of our research is to reduce L-band HI data from the Arecibo telescope. To reduce the data we use IDL programs written by our collaborators to reduce the data and find potential sources whose mass can be estimated by the baryonic Tully-Fisher relation, which relates the luminosity to the rotational velocity profile of spiral galaxies. Thus far we have reduced data and estimated HI masses for several galaxies in the supercluster region. We will give examples of data reduction and preliminary results for both the fall 2015 and 2016 observing seasons. We will also describe the data reduction process and the process of learning the associated software, and the use of virtual observatory tools such as the SDSS databases, Aladin, TOPCAT and others. This research was supported by the NSF grant AST-1211005. (Student Poster Presentation) 

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2. The Arecibo Pisces-Perseus Supercluster Survey: Declination strip 23

   Luna, Omar; Craig, David; Jones, Michael G.; Koopmann, Rebecca A.; Haynes, Martha P.; APPS Team, Undergraduate ALFALFA (January 2018, American Astronomical Society, AAS Meeting)

   We report on results of the Arecibo Pisces-Perseus Supercluster Survey (APPSS) along and near declination 23 degrees. APPSS is a targeted HI survey using the L-band wide receiever at the NAIC Arecibo observatory. It is designed to detect infall onto the Pisces-Perseus Supercluster (PPS) using a statistical comparison to models of the peculiar velocity flow field. We have investigated a subset of 67 galaxies in the PPS sky region along declination 23 degrees. For detected galaxies we have determined their systemic velocity, line width, integrated flux density, and HI mass. We will illustrate HI spectral properties of interesting detections in our region and will compare them with available optical and UV data from SDSS and the GALEX archives. We will also describe the data reduction process and the ongoing collaboration among faculty and undergraduate students of the Undergraduate ALFALFA Team. 

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3. The Arecibo Pisces-Perseus Supercluster Survey: Declination Strip 23

   Omar Luna, D. Craig (January 2018, American Astronomical Society ... meeting)

   We report on results of the Arecibo Pisces-Perseus Supercluster Survey (APPSS) along and near declination 23 degrees. APPSS is a targeted HI Survey using the L-band wide receiver at the NAIC Arecibo Observatory. It is designed to detect infall onto the Pisces-Perseus Supercluster (PPS) using statistical comparison to models of the peculiar velocity flow field. We have investigated a subset of 67 galaxies in the PPS sky region along declination 23 degrees. For detected galaxies, we have determined their systemic velocity, line width, integrated flux density, and HI mass. We will illustrate HI spectral properties of interesting detections in our region and will compare them with available optical and UV data from SDSS and the GALEX archives. We will also describe the data reduction process and the ongoing collaboration among faculty and undergraduate students of the Undergraduate ALFALFA Team. 

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4. The Arecibo Pisces-Perseus Supercluster Survey: Declination Strip 35

   McMichael, Chelsey; Ribaudo, Joseph; Koopmann, Rebecca A.; Haynes, Martha P.; APPSS Team, Undergraduate ALFALFA (January 2018, American Astronomical Society, AAS Meeting)

   The Arecibo Pisces-Perseus Supercluster Survey (APPSS) will provide strong observational constraints on the mass-infall rate onto the main filament of the Pisces-Perseus Supercluster. The survey data consist of HI emission-line spectra of cluster galaxy candidates, obtained primarily at the Arecibo Observatory (with ALFA as part of the ALFALFA Survey and with the L-Band Wide receiver as part of APPSS observations). Here we present the details of the data reduction process and spectral-analysis techniques used to determine if a galaxy candidate is at a velocity consistent with the Supercluster, as well as the detected HI-flux and rotational velocity of the galaxy, which will be used to estimate the corresponding HI-mass. We discuss the results of a preliminary analysis on a subset of the APPSS sample, corresponding to 98 galaxies located within ~1.5° of DEC = +35.0°, with 65 possible detections. We also highlight several interesting emission-line features and galaxies discovered during the reduction and analysis process and layout the future of the APPSS project. This work has been supported by NSF grants AST-1211005 and AST-1637339. 

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5. Initial Results from The Arecibo Pisces-Perseus Supercluster Survey

   Craig, D; Davis, C; Johnson, C; Koopmann, R; Jones, M; Hallenbeck, G; O'Donoghue, A; Haynes, M; Giovanelli, R; Rosenberg, J; et al (January 2017, 229th Meeting of the American Astronomical Society)

   The Arecibo Pisces-Perseus Supercluster Survey is a targeted HI survey of galaxies that began its second observing season in October 2016. The survey is conducted by members of the Undergraduate ALFALFA Team (UAT) and extensively involves undergraduates in observations, data reduction, and analysis. It aims to complement the HI sources identified by the ALFALFA extragalactic HI line survey by probing deeper in HI mass (to lower masses) than the legacy survey itself. Measurements of the HI line velocity widths will be combined with uniform processing of images obtained in the SDSS and GALEX public databases to localize the sample within the baryonic Tully Fisher relation, allowing estimates of their redshift-independent distances and thus their peculiar velocities. The survey is designed to constrain Pisces-Perseus Supercluster infall models by producing 5-σ detections of infall velocities to a precision of about 500 km/s. By targeting galaxies based on SDSS and GALEX photometry, we have achieved detection rates of 68% of the galaxies in our sample. We will discuss the target selection process, HI velocities and mass estimates from the 2015 fall observing season, preliminary results from 2016 observations, and preliminary comparisons with inflow models predicted by numerical simulations. This work has been supported by NSF grants AST-1211005, AST-1637339, AST-1637262. 

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