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Proposal Identification No.: A2749 Date Received: 2012­Sep­04 09:18:57
Technical Page
Proposal Type: Regular
General Category: Astronomy
Sub­Category: Spectroscopy
Observation Category: Extragalactic
Total Time Requested: 160 Hours
Minimum Useful Time: 90 minutes
Proposal Title: Insights into the Physical Processes that Regulate Star­forming Systems: The
Low Stellar Mass GASS Extension
ABSTRACT:
The GALEX Arecibo SDSS Survey (GASS) was a large Arecibo program that measured the HI content of about
1000 massive (M*>1e10 Msun) galaxies in the local Universe. Here we propose to extend GASS to a lower stellar
mass regime (1e9 galaxy start to increase. Unlike the original GASS sample that was designed to explore the transition between
star­forming and passive galaxies, this sample is designed to understand the basic physical processes governing
star­forming galaxies. These new observations will allow us to place key constraints on models for self­regulation of
star formation, answer some of the questions prompted by our GASS investigations, and will contribute to a larger
multi­wavelength e#ort aimed at understanding gas accretion and star formation histories of low­mass galaxies in
the local Universe.
Name Institution E­mail Phone Student
Barbara Catinella Max Planck Institute
for Astrophysics
bcatinel@mpa­garching.mpg.de +49 89 30000
2233
no
Remote Observing Request
Observer will travel to AO
X Remote Observing
In Absentia (instructions to oper­
ator)
Instrument Setup
L­wide
Atmospheric Observation Instruments:
1

Special Equipment or setup: none
RFI Considerations
Frequency Ranges Planned
1392 ­ 1406
This proposal requires coordination with Punta Salinas radar within the band 1222­1381 MHz..
This proposal requires coordination with GPS L3 at 1381 MHz.
2