Marla Geha edited Proposed HI Observations.tex  over 9 years ago

Commit id: bd24bbd30709baef13dce5991416437ebfeaebdd

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We will observe our target dwarf galaxy AGN candidates in the L-band wide receiver, with the spectrometer in 9 level sampling mode with 4096 channels and a 12.5 MHz bandwidth. This yields a velocity resolution of 0.66 km/s which we will center on the redshifted 21-cm line using the SDSS optically measured recession velocity. All of our target galaxies have recession velocities less than 5000 km s−1 and are unresolved by the Arecibo beam. We chose the L-band over the ALFA receiver as it has a higher sensitivity and minimizes side-lobe contamination. To mitigate any baselines issues, we will perform an associated off observation (position switching) of equal integration time for each target.  [use our new relation to predict the gas flux and calc integration times]  [Add paragraph on our automated data redux scripts]  We request primarily night-time observing only in order to avoid standing waves due to solar interference which make estimating accurate baselines difficult. We request a total of X hours with the Arecibo telescope to observe Y low mass AGN candidates.