3 research outputs found
Evolutive Unification in Composite Active Galactic Nuclei
In this paper we explore an evolutionary Unified scenario involving super
massive black hole and starburst with outflow, that seems capable of explaining
most of the observational properties of at least part of AGNs. Our suggestion
is explored inside the expectations of the Starburst model close associated
with the AGN where the NLR, BLR and BAL region are produced in part by the
outflow process with shells and in compact supernova remnants. The outflow
process in BAL QSOs with extreme IR and Fe II emission is studied. In addition,
the Fe II poblem regarding the BLR of AGN is analysed. Neither the correlations
between the BAL, IR emission, FeII intensity and the intrinsic properties of
the AGN are clearly understood. We suggest here that the behaviour of the BAL,
IR and FeII emission in AGNs can be understood inside an evolutionary and
composite model for AGNs. In our model, strong BAL systems and Fe II emission
are present (and intense) in young IR objects. Orientation/ obscuration effects
take the role of a second parameter providing the segregation between Sy1/Sy2
and BLRG/NLRG.Comment: 14 pages, 6 figures (submitted MNRAS
GEMINI 3D spectroscopy of BAL+IR+Fe II QSOs: II. IRAS 04505-2958 an explosive QSO with hypershell and a new scenario for galaxy formation and galaxy end
From a study of BAL + IR + Fe II QSOs (using deep Gemini GMOS-IFU
spectroscopy) new results are presented: for IRAS 04505-2958. Specifically, we
have studied in detail the out flow (OF) process and their associated
structures, mainly at two large galactic scales: (i) two blobs/shells (S1, S2)
at radius r = 1.1 and 2.2 kpc; and (ii) an external hypergiant shell (S3) at r
= 11 kpc. In addition, the presence of two very extended hypergiant shells (S4,
S5) at r = 80 kpc is discussed. From this GMOS study the following main results
were obtained: (i) For the external hypergiant shell S3 the kinematics GMOS
maps of the ionized gas show very similar features to those observed for the
prototype of exploding external supergiant shell: in NGC 5514. (ii) The main
knots K1, K2 and K3 -of this hypergiant shell S3- show a stellar population and
emission line ratios associated with the presence of a starburst + OF/shocks.
(iii) The internal shells S1 and S2 show structures, OF components and
properties very similar to those detected in the nuclear shells of Mrk 231.
(iv) The shells S1+S2 and S3 are aligned at PA = 131: i.e. suggesting that the
OF process is in the blow-out phase with bipolar structure. In addition, the
shells S4 and S5 (at 80-100 kpc scale) are aligned at PA = 40, i.e.: a bipolar
OF perpendicular to the internal OF. Finally, the generation of UHE cosmic rays
and neutrino/ dark-matter -associated with HyNe in BAL + IR + Fe II QSOs- is
discussed.Comment: Submitted MNRAS, 81 pages, 25 Figure
Deep GEMINI GMOS-IFU spectroscopy of BAL QSOs: I. Decoupling the BAL, QSO, starburst, NLR, supergiant bubbles and galactic wind in Mrk 231
In this work we present the first results of a study of BAL QSOs (at low and
high redshift), based on very deep Gemini GMOS integral field spectroscopy. In
particular, the results obtained for the nearest BAL IR QSO Mrk 231 are
presented. Very deep three-dimensional spectra and maps clearly show that the
BAL systems I and II are extended (reaching 1.4-1.6" = 1.2-1.3 kpc, from the
nucleus) and clearly elongated at the position angle close to the radio jet PA.
Which suggest that the BAL systems I and II are both associated with the radio
jet, and supporting the bipolar jet-wind model for some BALs. For the nuclear
region of Mrk 231, the QSO and host-galaxy components were modelled, using a
new technique of decoupling 3D spectra. From this study, the following main
results were found: (i) in the pure host galaxy spectrum an extreme nuclear
starburst component was clearly observed, mainly as a very strong increase in
the flux, at the blue wavelengths; (ii) the BAL system I is observed in the
spectrum of the host galaxy; (iii) in the clean/pure QSO emission spectrum,
only broad lines were detected. 3D GMOS individual spectra (specially in the IR
Ca II triplet) and maps confirm the presence of an extreme and young nuclear
starburst (8 < age < 15 Myr), which was detected mainly in a ring or toroid
with a radius r = 0.3" = 200 pc, around the very nucleus. The physical
properties of the four expanding nuclear bubbles were analysed, using the GMOS
3D spectra and maps. These results suggest that an important part of the
nuclear NLR is generated by the OF process and the associated low velocity
ionizing shocks.Comment: 51 pages, 20 figures, Submitted MNRA