Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/KoopmanntagA2853tp.ps Дата изменения: Tue Oct 1 18:52:18 2013 Дата индексирования: Sat Mar 1 01:16:32 2014 Кодировка: Поисковые слова: stars

Proposal Identification No.: A2853 Date Received: 2013­Sep­02 13:26:35
Technical Page
This proposal has not been submitted before.
Proposal Type: Regular
General Category: Astronomy
Sub­Category: Spectroscopy
Observation Category:
Total Time Requested: 122 Hours
Minimum Useful Time: 2
Proposal Title: L­Band Wide Observations of Star­Forming Galaxies in X­ray Selected Groups:
The Quenching of Star Formation in the Group Environment
ABSTRACT:
We propose targeted L­band wide observations to measure HI gas content of group galaxies known to be star
forming from optical data but which were not detected by the ALFALFA survey. This work is part of a detailed
multiwavelength study of a set of nearby groups within 120 Mpc spanning a range of X­ray luminosity, velocity
dispersion, and richness. We aim to measure the gas fraction and star formation e#ciency of all star forming group
members to determine the threshold of gas depletion, star formation quenching, and morphological transformation
within intermediate density environments. The proposed LBW observations will provide the critically important
gas fractions of star­forming low mass and environmentally gas­depleted group galaxies whose HI fluxes fall below
ALFALFA's sensitivity. The observations will be conducted by members of the Undergraduate ALFALFA Team
mostly onsite.
Name Institution E­mail Phone Student
Rebecca A Koopmann Union College koopmanr@union.edu 518­388­6786 no
Remote Observing Request
X Observer will travel to AO
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
1375­1430
This proposal requires coordination with Punta Salinas radar within the band 1222­1381 MHz..
This proposal requires coordination with GPS L3 at 1381 MHz.
2