Other
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21943513t&link_type=abstract
American Astronomical Society, AAS Meeting #219, #435.13
Other
Scientific paper
The aim of the project is to use the Sloan Digital Sky Survey (SDSS) to data mine the spectra of quasars and identify redshifted absorption troughs as outows. SDSS collects data on a variety of objects in the universe, but our interest is in Active Galactic Nuclei (AGN) and outows of quasars. The database search paves the way for follow-up analysis including determining the mass ux, kinetic luminosity, column density, and other physical parameters of the outow. Of the thousands of SDSS objects, the ones deemed most interesting are analyzed using computer software that identi es doublets in the spectra such as CIV, SiII, and NV. Each line of spectra is examined for excited ions that are used in the calculation of the hydrogen number density. This is the rst step in a long process to learn more about the outows of quasars and AGN. Currently, we have dozens of objects ready to explore further with higher resolution telescopes such as the William Herschel Telescope, the Very Large Telescope at the European Southern Observatory in Chile and also the Hubble Space Telescope.
Arav Nahum
Quasar Outflow Group at Virginia Tech
True Sarah
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