Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the radio spectrum of CI Cygni: a test of popular models for
  symbiotic stars   We have determined the spectral energy distribution at wavelengths between 6
cm and 0.85 mm for the proto-typical S(stellar)-type symbiotic star, CI Cygni,
during quiescence. Data were obtained simultaneously with the Very Large Array
and the SCUBA sub-millimetre (sub-mm) camera on the James Clerk Maxwell
Telescope. The data have allowed us to determine the free-free turnover
frequency of the ionised component, facilitating a model-dependent estimate of
the binary separation to compare with the known orbital parameters of CI Cug
and to critically test the known models for radio emission from symbiotic
stars. In particular, our data rule out the two most popular models: ionization
of the giant wind by Lyman continuum photons from its hot companion and
emission resulting from the interaction of winds from the two binary
components.

22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org