Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Spectrum of the FeLoBAL Quasar FBQS 1214+2803: A
  Resonance-Scattering Interpretation   The usual interpetation of the spectrum of a BAL QSO is that a broad-band
continuum from the central engine plus broad emission lines from a surrounding
region (the BELR) emerges from near the center of the QSO, and broad absorption
lines are superimposed in a separate outlying region (the BALR). For FBQS
1214+2803, designated as an FeLoBAL QSO because its spectrum contains numerous
absorption features from excited states of Fe II, we explore an alternative
interpretation based on resonance scattering. In this model line emission and
absorption occur in the same line-forming region (the LFR). A
resonance-scattering synthetic spectrum computed with the supernova
synthetic-spectrum code SYNOW fits the spectrum of FBQS 1214+2802 rather well,
so the resonance-scattering model merits further study. Some implications of
the model and its possible applicability to other QSOs are briefly discussed.

28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics