Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/2013Spring/HaynestagA2752.pdf
Дата изменения: Tue Sep 11 04:14:22 2012
Дата индексирования: Mon Feb 4 22:38:24 2013
Кодировка:

Proposal Identification No.:

A2752 Arecibo Observatory

Date Received: 2012-Sep-03 14:30:33 William E. Gordon Telescope Observing Time Request COVER SHEET

Section I - General Information
Submitted for Sep 1 2012. This proposal has not been submitted before. Proposal Type: General Category: Sub-Category: Observation Category: Time Requested this 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: We propose to conduct targeted L-band wide observations of HI candidates without optical counterparts detected by the ALFALFA survey including: (1) high quality ALFALFA detections without optical counterparts and not associated with known tidal debris fields: the "dark galaxy" candidates; and (2) low velocity (cz <1000 km/s), low signal-to-noise, narrow HI line width ALFALFA sources without optical counterparts: the high hydrogen mass to luminosity ratio low mass dwarf galaxy candidates. The ob jectives of the LBW observations are to confirm the reality of the (almost) "dark" galaxies and possible local extreme dwarf systems so that the most intriguing cases can be targeted for coordinated multiwavelength observations to probe more deeply their dark matter and complete baryon contents. This third installment of our LBW followup campaign focuses on spring targets in newly catalogued areas. The observations will be conducted by members of the Undergraduate ALFALFA team on site. Outreach Abstract: The ALFALFA extragalactic survey has been using Arecibo to search for signals from atomic hydrogen clouds in and between galaxies in the local universe. Among them, we hope to find the signatures of galaxies which contain hydrogen gas (and are thus visible to Arecibo) but have not formed many (or any) stars (and are thus invisible to optical ones). These ob jects may consist mostly of the mysterious "dark matter" but are effectively "starless galaxies". In this proposal, we ask for time to conduct targeted observations of "optically dark" HI sources and possible detections made by the ALFALFA extragalactic survey to confirm their reality so that the most intriguing cases can be targeted for further observations to probe more deeply their nature and origin. The observations will be conducted by members of the Undergraduate ALFALFA team on site. Regular Astronomy Spectroscopy Extragalactic 56 hours

2 hours less than 100 GB

Harvesting ALFALFA: LBW Followup of Enigmatic ALFALFA sources: III. March 2013 Request

1

Name Martha P Haynes Riccardo Giovanelli

Institution Cornell University Cornell University

E-mail haynes@astro.cornell.edu riccardo@astro.cornell.edu

Phone 607/255-0610 607/255-6505

Student no no

Additional Authors
Rebecca Koopmann (Union College) koopmanr@union.edu Parker Troischt (Hartwick College) TroischtP@hartwick.edu Jeremy Darling (U. Colorado) jdarling@origins.colorado.edu John Salzer (Indiana U.) slaz@astro.indiana.edu Katherine Rhode (Indiana U.) rhode@astro.indiana.edu Kristine Spekkens (Royal Military Coll. Canada) Kristine.Spekkens@rmc.ca * Elizabeth Adams (Cornell PhD student) betsey@astro.cornell.edu * Gregory Hallenbeck (Cornell PhD student) ghallenbeck@astro.cornell.edu * Shan Huang (Cornell PhD student) shan@astro.cornell.edu * Michael Jones (Cornell PhD student) jonesmg@astro.cornell.edu * Karen Lee-Waddell (Royal Military Coll. Canada, Queen's U. PhD student) Karen.Lee-Waddell@rmc.ca * Lucas Leisman (Cornell PhD student) leisman@astro.cornell.edu * Emmanouil Papastergis (Cornell PhD student) papastergis@astro.cornell.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.sep12.authorlist.html

This work is part of a PhD 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 08:00 16:00

Days Needed at This Interval 7

2

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 time during the "spring break" period, mid-late March 2013.

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

Sp ecial Equipment or setup:

none

Section IV - RFI Considerations Frequency Ranges Planned
1340-1430 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
350 targets to be selected from ALFALFA source catalog; see proposal for selection criteria.

3