Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NGC 5626: a massive fast rotator with a twist   We present a kinematic analysis of the dust-lane elliptical NGC 5626 based on
MUSE observations. These data allow to robustly classify this galaxy as a fast
rotator and to infer a virial mass of $10^{11.7} M_\odot$, making it one of the
most massive fast rotators known. In addition, the depth and extent of the MUSE
data reveal a strong kinematic twist in the stellar velocity field (by up to
$45$ degrees beyond $1.5R_e$). A comparison with the ATLAS$^\mathrm{3D}$ sample
underlines the rareness of this system, although we show that such a
large-scale kinematic twist could have been missed by the ATLAS$^\mathrm{3D}$
data due to the limited spatial sampling of this survey (typically extending to
$0.6R_e$ for massive ETGs). MUSE thus has the potential to unveil more examples
of this type of galaxies. We discuss the environment and possible formation
history of NGC 5626 and finally argue how a merger between the Milky Way and
Andromeda could produce a galaxy of the same class as NGC 5626.

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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: cmp-lg
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The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: physics
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys