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Proposal Identification No.:

A2200

Date Received:

2006-Feb-02 17:19:53

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Extragalactic 33 Hours

HI Content of Distant Galaxy Clusters

As the redshift increases, it gets ever more difficult to detect the HI signal from individual galaxies, as their angular separation from companions decreases. This is a pilot study to evaluate the feasibility of observing rich clusters of galaxies instead. There is both diversity in the abundance of gas-rich galaxies in clusters, as well as an increase in the percentage of blue galaxies with redshift. We have chosen two clusters at z=0.09 and 0.18 to evaluate the problems and utility of this approach.

Name Yervant Terzian

Institution Cornell University

E-mail terzian@astro.cornell.edu

Phone 607 255 4935

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
L-wide Atmospheric Observation Instruments: ALFA

Sp ecial Equipment or setup:

none

RFI Considerations Frequency Ranges Planned

1


1180 - 1225 and 1280 - 1325 This proposal requires coordination with Punta Salinas radar within the band 1222-1381 MHz..

2