Statistics – Computation
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21733104s&link_type=abstract
American Astronomical Society, AAS Meeting #217, #331.04; Bulletin of the American Astronomical Society, Vol. 43, 2011
Statistics
Computation
Scientific paper
We present a simulation of a spectral line observation of a field of spiral galaxies at high redshift using the Atacama Large Millimeter/Submillimeter Array(ALMA), obtained by making use of the virtual galaxy catalog developed by Obreschkow et al. as part of the Square Kilometer Array Simulated Skies effort. Our method selects galaxies with high star formation rates and calculates continuum and CII 1900GHz line fluxes for each galaxy before simulating observations in early and full science configurations at 234GHz. Using nine eight-hour observations, we detect both high redshift (z 7.26) objects in our approximately one square arcminute field, indicating that while a large scale survey will be necessary to build up a significant sample of these very distant galaxies, this task is within ALMA's technical capabilities. Such a survey would yield valuable information about the formation and evolution of galaxies and large scale structure in the universe, and also give details of the epoch of the reionization of the intergalactic medium. We also discuss various selection effects used to constrain the simulation to be computationally feasible, as well as potential problems future surveys may encounter.
This research was made possible by the National Science Foundation's Research Experience for Undergraduates program and the National Radio Astronomy Observatory.
Lacy Mark
Spilker Justin
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