Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Critically Evaluated Spectral Data for Neutral Carbon (C I)   In this critical compilation, all known to us experimental data on the
spectrum of neutral carbon were methodically evaluated and supplemented by
parametric calculations with Cowan's code. The sources of experimental data
vary from laboratory to astrophysical objects and employ different
instrumentation from classical grating and Fourier transform spectrometers to
precise laser spectroscopy setups and various other modern techniques. This
comprehensive evaluation provides accurate atomic data on energy levels and
wavelengths (observed and Ritz) with their estimated uncertainties, as well as
a uniform description of observed line intensities. In total, 412 energy levels
were optimized with the help of selected 1221 best observed lines participating
in 1365 transitions in the wavelength region 750 {\AA} to 609.14 {\mu}m. In
addition, 737 possibly observable transitions are predicted. Critically
evaluated transition probabilities for 1616 lines are provided, of which 241
are new. With the accurate energy levels obtained, combined with additional
observed data on high Rydberg states, the ionization limit was determined to be
90 820.348(9) cm^(-1) or 11.2602880(11) eV in fair agreement with the
previously recommended value, but more accurate.

11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ