Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Discovery of an Extended Dust Emission around IRAS 18576+0341 (AFGL
  2298) at 10.3 and 18.0 microns: a New Luminous Blue Variable Candidate?   We report detection of an extended mid-infrared emission from \iras
18576+0341 (AFGL 2298). The object shows a dusty circumstellar shell that has
diameter of $\age 7\arcsec$ at 10.3 and 18.0 $\um$. The dust nebula shows two
emission peaks concentrically elongated and symmetrically oriented on the
opposite sides of the third, central peak, which appears to be the central star
of the system. The observed mid-infrared morphology indicates that the
circumstellar dust shell has an equatorially-enhanced material distribution,
which is a common signature of stellar objects that have experienced mass loss.
Radiative transfer model calculations suggest that the central star is an
extremely bright ($\lstar = 10^{6.4} \lsun$) star at a distance of about 10
kpc: this object is best described as a new luminous blue variable candidate.
The circumstellar dust shell seems to have been generated by an
equatorially-enhanced mass loss process with ${\dot M} \ge 6.8 \times 10^{-6}
\msun$ yr$^{-1}$ and ${\dot M}_{\rm pole}/{\dot M}_{\rm eq} \sim 0.5$.

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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
3
The categories of this paper are: physics
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The categories of this paper are: stat
1
The categories of this paper are: cs