Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 1ES 1741+196: a BL Lacertae object in a triplet of interacting galaxies?   We present subarcsecond resolution imaging and spectroscopy of the BL Lac
object 1ES 1741+196 and neighboring galaxies. Based on 2-dimensional modelling,
the host galaxy of 1ES 1741+196 is a very bright and large elliptical galaxy
(M_R = -24.85, r_e = 51.2 kpc), whose overall luminosity distribution deviates
significantly from a de Vaucouleurs profile. It is one of the most luminous and
largest BL Lac host galaxies known. Closeby to 1ES 1741+196 we found two
companion galaxies at the same redshift as the BL Lac itself. They are at
projected distances of 7.2 and 25.2 kpc, respectively. The closer companion
galaxy can be best modelled by a Sa-type galaxy, whereas the more distant
companion galaxy is an elliptical. This is supported by their spectra. We
detected a tidal tail emerging from the closer companion galaxy which is
possibly connected with the more distant galaxy. Its surface brightness
increases towards the closer companion galaxy, which suggests that material has
been released from that galaxy due to tidal forces. The flat luminosity profile
(beta = 0.15), high ellipticity (epsilon = 0.35) of the host galaxy of 1ES
1741+196 as well as its position angle along the impact parameter to the
neighboring galaxies can be the result of tidal interaction. 1ES 1741+196 may
be a BL Lac object in a triplet of interacting galaxies.

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The categories of this paper are: nucl-th
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The categories of this paper are: nlin
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: chem-ph
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: cs
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The categories of this paper are: supr-con
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The categories of this paper are: stat
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The categories of this paper are: math-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ph