Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Structure and Kinematics of Nebulae around LBVs and LBV
  Candidates in the LMC   We present a detailed analysis of the morphology and kinematics of nebulae
around LBVs and LBV candidates in the Large Magellanic Cloud. HST images and
high-resolution Echelle Spectra were used to determine the size, shape,
brightness, and expansion velocities of the LBV nebulae around R127, R143, and
S61. For S Dor, R71, R99, and R84 we discuss the possible presence of nebular
emission, and derive upper limits for the size and lower limits on the
expansion velocities of possible nebulae. Including earlier results for the LBV
candidates S119 and SK-69 279 we find that in general the nebulae around LBVs
in the LMC are comparable in size to those found in the Milky Way. The
expansion velocities of the LMC nebulae, however, are significantly lower--by
about a factor of 3 to 4--than those of galactic nebulae of comparable size.
Galactic and LMC nebulae show about the same diversity of morphologies, but
only in the LMC do we find nebulae with outflow. Bipolarity--at least to some
degree--is found in nebulae in the LMC as well as in the Milky Way, and
manifests a much more general feature among LBV nebulae than previously known.

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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-th
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The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: cs
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The categories of this paper are: nlin
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The categories of this paper are: comp-gas
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The categories of this paper are: q-fin
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
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The categories of this paper are: solv-int