Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/2015Fall/JonestagA2982.pdf Дата изменения: Sat Mar 7 21:34:08 2015 Дата индексирования: Mon Apr 11 14:46:00 2016 Кодировка: Поисковые слова: universe

Proposal Identification No.:

A2982 Arecibo Observatory

Date Received: 2015-Mar-02 15:12:23 William E. Gordon Telescope Observing Time Request COVER SHEET

Section I - General Information
Submitted for Mar 1 2015. This proposal has not been submitted before. Proposal Type: General Category: Sub-Category: Observation Category: Time Requested this semester: Hours Next Semester: Hours already used for this pro ject: Additional Hours required to complete pro ject: Minimum Useful Time: Expected Data Storage: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Extragalactic 126.5 0 0 126.5 2 hours less than 100 GB

The Arecibo Pisces-Perseus Supercluster (APPS) Survey

In visualizations of the large scale structure within 100 Mpc, the Pisces-Perseus Supercluster (PPS) represents a strong overdensity, separated from the local Laniakea supercluster by a deep void. The PPS extends over 50 degrees of the Arecibo sky at a near-constant distance of 70 Mpc. Here, we propose to extend the results of the ALFALFA survey by conducting LBW HI-line observations of galaxies which are likely, based on photometry derived from SDSS and GALEX, to be PPS members, but which lie below the ALFALFA detection limit. Previous LBW observations under A2811 and A2859 have demonstrated the efficacy of this approach to increase the HI dataset by 50%. In addition to tracing the HI mass function to log MH = 8, we will use the Tully-Fisher relation to make a robust measurement of infall onto the PPS for comparison with flows predicted by constrained simulations. Outreach Abstract: One of the most prominent features in the extragalactic sky visible from Arecibo is the Pisces-Perseus supercluster, a huge filamentary structure containing thousands of galaxies all at a distance of about 225 million light years. Extending over 50 degrees across the Arecibo sky, it serves as a perfect laboratory to test how well galaxies trace dark matter along the "Cosmic Web". We will combine Arecibo observations of emission from the atomic hydrogen gas in these galaxies with optical and ultraviolet imaging of their starlight to make a quantitative measurement of how the galaxies are falling onto the supercluster filament due to its mass (luminous plus dark matter) overdensity. We will also determine how the hydrogen mass of galaxies is influenced by their location within this unique nearby example of the cosmic web.

Name Michael G Jones Rebecca A Koopmann

Institution Cornell University Union College

E-mail jonesmg@astro.cornell.edu koopmanr@union.edu 1

Phone 607 255 9852 518 388 6786

Student G no


Additional Authors
Martha Haynes (Cornell U.) haynes@astro.cornell.edu Riccardo Giovanelli (Cornell U.) riccardo@astro.cornell.edu Lukas Leisman (Cornell PhD student) leisman@astro.cornell.edu Thomas Balonek (Colgate U.) tbalonek@colgate.edu John Cannon (Macalester Coll.) jcannon@macalester.edu Kim Coble (Chicago State U.) kcoble@csu.edu Mary Crone Odekon (Skidmore) mcrone@skidmore.edu David Craig (West Texas A and M U) dcraig@mail.wtamu.edu Adriana Durbala (U. Wisconsin-Stevens Point) Adriana.Durbala@uwsp.edu Rose Finn (Siena Coll.) rfinn@siena.edu James Higdon (Georgia Southern U.) jhigdon@georgiasouthern.edu Sarah Higdon (Georgia Southern U.) shigdon@georgiasouthern.edu Lyle Hoffman (Lafayette Coll.) hoffmang@lafayette.edu Katherine Jore (U. Wisconsin-Stevens Point) kjore@uwsp.edu David Kornreich (Ithaca College) dkornreich@ithaca.edu Due to the character limit on the on-line coversheet form, find the complete list at http://egg.astro.cornell.edu/alfalfa/ docs/prop.mar15.authorlist.html

This work is not part of a thesis.

Remote Observing Request

X

Observer will travel to AO Remote Observing In Absentia (instructions to operator)

Section I I - Time Request
The following times are in LST. For these observations night-time is required.

Begin ­ End Interval­Interval 21.5 ­ 3.25 ­ ­ ­

Days Needed at This Interval 22

Time Constraints (Must Be Justified in the Prop osal Text) So that members of the Undergraduate ALFALFA team are able to travel to Arecibo to conduct the observations, we request at least 6 nights during the "Thanksgiving break" period: Nov 22-29, 2015. For nighttime observing, sessions need to be between late Aug - Nov. 2


Section I I I - Instruments Needed
L-wide Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

Section IV - RFI Considerations Frequency Ranges Planned
1360-1430 MHz This proposal requires coordination with Punta Salinas radar within the band 1222-1381 MHz.. This proposal requires coordination with GPS L3 at 1381 MHz.

Section V - Observing List Target List
998 sources with SDSS photometry but not spectroscopy, not detected by ALFALFA, with 22h
3