  We report the results of analysis of the Hbeta emission-line region of a
sample of thirty low-redshift (z<1) iron low-ionization broad absorption line
quasars (FeLoBALQs). Eleven of these objects are newly classified as FeLoBALQs.
A matched sample of 132 unabsorbed quasars was analyzed in parallel. The
emission lines showed the well known anticorrelation between the [OIII] and
FeII emission (Boroson & Green 1992). Using a summary statistic called E1 to
quantify this anticorrelation, we found that while the distribution of E1 for
the unabsorbed quasars has a single peak, the FeLoBALQs have a bimodal shape in
this parameter. Previous studies have shown that the line emission properties
of BAL and non-BAL quasars are consistent, and therefore the difference in the
Hbeta region emission between FeLoBAL quasars and unabsorbed quasars is a new
result. The two populations of FeLoBAL quasars are characterized by low and
high bolometric luminosities and Eddington ratios. Some previous studies have
suggested that BAL quasars are high accretion-rate objects, and therefore the
discovery of the low accretion-rate branch of FeLoBAL quasars was unexpected.
We also found that the Hbeta FWHM is systematically broader among the FeLoBALQs
compared with the non-BAL quasars implying a higher inclination viewing angle
or a dearth of low-velocity line-emitting gas.
