FeII(UV)/MgII Ratio versus Luminosity in QSOs

Details FeII(UV)/MgII Ratio versus Luminosity in QSOs FeII(UV)/MgII Ratio versus Luminosity in QSOs

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.7216v&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #72.16; Bulletin of the American Astronomical Society, V

Astronomy and Astrophysics

Astronomy

Scientific paper

In our previous studies we examined the luminosity dependence of the Fe II(UV)/MgII ratio, and we found that beyond a threshold of FeII(UV)/MgII=5, and M2500 < -25mag, the Fe II(UV)/Mg II ratio increases with luminosity, as was predicted by our model.
We interpret our observed variation of the Fe II(UV)/MgII ratio with redshift as a result of the correlation of redshift with luminosity in a magnitude limited quasar SDSS sample. To check our funding further, we selected bright objects and carried observations using 2.3 m telescope at Siding Spring Observatory and 4m Anglo-Australian Telescope.
This presentation includes four bright objects for which we have collected data along with measurements. This work investigates how much the QSO continuum is affected by Fe II pseudo-continuum and physical conditions in these objects.
EV research and presentation at the AAS are supported by the National Science Foundation (NSF 0607465).

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