Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Herschel's view into Mira's head   Herschel's PACS instrument observed the environment of the binary system Mira
Ceti in the 70 and 160 micron bands. These images reveal bright structures
shaped as five broken arcs and fainter filaments in the ejected material of
Mira's primary star. The overall shape of the IR emission around Mira deviates
significantly from the expected alignment with Mira's exceptionally high space
velocity. The observed broken arcs are neither connected to each other nor are
they of a circular shape; they stretch over angular ranges of 80 to 100
degrees. By comparing Herschel and GALEX data, we found evidence for the
disruption of the IR arcs by the fast outflow visible in both Halpha and the
far UV. Radial intensity profiles are derived, which place the arcs at
distances of 6-85" (550 - 8000 AU) from the binary. Mira's IR environment
appears to be shaped by the complex interaction of Mira's wind with its
companion, the bipolar jet, and the ISM.

18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
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The categories of this paper are: hep-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys