Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interactions among intermediate redshift galaxies. The case of
  SDSSJ134420.86+663717.8   We present the properties of the central supermassive black holes and the
host galaxies of the interacting object SDSSJ134420.86+663717.8. We obtained
optical long slit spectroscopy data from the Large Binocular Telescope (LBT)
using the Multi Object Double Spectrograph (MODS). Analysing the spectra
revealed several strong broad and narrow emission lines of ionised gas in the
nuclear region of one galaxy, whereas only narrow emission lines were visible
for the second galaxy. The optical spectra were used to plot diagnostic
diagrams, deduce rotation curves of the two galaxies, and calculate the masses
of the central supermassive black holes. We find that the galaxy with broad
emission line features has Seyfert~1 properties, while the galaxy with only
narrow emission line features seems to be star-forming in nature. Furthermore,
we find that the masses of the central supermassive black holes are almost
equal at a few times 10^7 solar mass. Additionally, we present a simple N-body
simulation to shed some light on the initial conditions of the progenitor
galaxies. We find that for an almost orthogonal approach of the two interacting
galaxies, the model resembles the optical image of the system.

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The categories of this paper are: cond-mat
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
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The categories of this paper are: adap-org
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The categories of this paper are: alg-geom
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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: atom-ph
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The categories of this paper are: cs
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-th