Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Detecting Planets in Planetary Nebulae   We examine the possibility of detecting signatures of surviving
Uranus-Neptune-like planets inside planetary nebulae. Planets that are not too
close to the stars, orbital separation larger than about 5 AU, are likely to
survive the entire evolution of the star. As the star turns into a planetary
nebula, it has a fast wind and a strong ionizing radiation. The interaction of
the radiation and wind with a planet may lead to the formation of a compact
condensation or tail inside the planetary nebula, which emits strongly in
Halpha, but not in [OIII]. The position of the condensation (or tail) will
change over a time of about 10 years. Such condensations might be detected with
currently existing telescopes.

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The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: cond-mat
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph