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Proposal Identification No.:

A2010

Date Received: 2004 -Sep-29 14:45:30

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Large Astronomy Spectroscopy Extragalactic 990 Hours

ALFALFA: The Arecibo Legacy Fast ALFA Survey

We propose to initiate the Arecibo Legacy Fast ALFA (ALFALFA) Survey, a key element of the E-ALFA Consortium science program. Conducted in a 2-pass fixed-azimuth drift mode sampling 100 MHz with 5 km/s resolution, ALFALFA will survey 7000 square degrees away from the galactic plane, including both the rich central regions of the Local Supercluster and the low density anti-Virgo region. It is specifically designed to explore the very low mass end of the HI mass function in the local universe, the nature of dwarf galaxies and high velocity clouds, the extent and origin of HI disks, and the structure and dynamics of the Local Supercluster. As a wide area legacy survey, ALFALFA will enable a broad range of correlative studies with like datasets such as SDSS, 2MASS and GALEX to quantify environmental variations in the Local and nearby superclusters such as Pisces-Perseus and A1367-Coma. Eight times more sensitive than HIPASS with 4 times the angular resolution, ALFALFA will also provide the first wide area blind survey for HI tidal remnants, low z HI absorbers and OH megamasers in the range 0.16
Name Riccardo - Giovanelli

Institution Cornell University

E-mail riccardo@astro.cornell.edu

Phone (607) 255-6505

Student no

Service Observing Request

Remot e Observing Request

X

None All of the observing run. Part of the observing run. Queue Observing X

No Maybe Yes

Instrument Setup
ALFA Atmospheric Observation Instruments:

1


Sp ecial Equipment or setup:

none

RFI Considerations Frequency Ranges Planned
1335-1435 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.

2