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Proposal Identication No.: A1552 Date Received: 2001-May-31 18:56:02
Technical Page
Proposal Type: Regular
General Category: Astronomy
Sub-Category: Spectroscopy
Observation Category: Extragalactic
Total Time Requested: 96 Hours
Proposal Title: An HI Study of the Ly Absorber=Galaxy Connection
ABSTRACT:
We propose a deep 21 cm study of the regions surrounding 21 low redshift Ly absorption line systems along 4
lines of sight. This sample includes all of the accessible, low redshift, Ly forest systems that have been identied
to date. We will use these systems to search for low surface brightness HI-rich galaxies=proto-galaxies near the
absorber. Any HI sources found will provide a measure of the galaxy=absorber connection that is unbiased by the
optical properties of the galaxy. We will also study the 140-1200 kpc region (depending on the source redshift)
surrounding the line of sight to look for an excess of HI sources which might indicate the presence of large scale HI
features. This proposal requests longer integration times than our previous one, allowing us to probe for lower
mass systems.
Name Institution E-mail Phone Student
Mary E Putman CASA - University of
Colorado
mputman@casa.colorado.edu 303-492-6058 no
I do NOT want to do remote observing.
Instrument Setup
L-narrow
Atmospheric Optical Instruments:
Special Equipment or setup: none
RFI Considerations
Frequency Ranges Planned
1370 - 1420
1