Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Complex emission line region of Mrk 817   In this work we study the physical and kinematical properties of the emission
line region of Seyfert 1.5 galaxy Mrk 817 using three sets of observations,
among which are high-resolution spectra obtained with the Isaac Newton
Telescope on Canary Islands. We find that in Mrk 817 the Narrow (NEL) and Broad
Emission Lines (BEL) are very complex, indicating that structure of both the
Narrow (NLR) and Broad Line Region (BLR) is complex and consists of at least
two sub-regions with different kinematical properties. We find that the BEL can
be fitted with the two-component model, where the core of the line is coming
from a spherical region with isotropic velocity distribution, and wings might
be affected by a low inclined accretion disc (or disc-like emitting region).
Also, we discuss the physical properties of the BLR. Moreover, we find that an
outflow is present in the NLR, that may be driven by an approaching jet.

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The categories of this paper are: q-bio
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The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: cond-mat
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The categories of this paper are: cs
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The categories of this paper are: econ
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The categories of this paper are: nucl-ex
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The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: dg-ga
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The categories of this paper are: math
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The categories of this paper are: nlin
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The categories of this paper are: bayes-an
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The categories of this paper are: gr-qc
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The categories of this paper are: comp-gas
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The categories of this paper are: q-alg