Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reddening, Abundances, and Line Formation in SNe II   We present detailed NLTE spectral synthesis models of the Type II supernova
2005cs, which occurred in M51 and for which the explosion time is well
determined. We show that previous estimates for the reddening were
significantly too high and briefly discuss how this will effect the inferred
progenitor mass. We also show that standard CNO-burning enhanced abundances
require far too large an oxygen depletion, although there is evidence for a
single optical N II line and the sodium abundance shows clear evidence for
enhancement over solar both as expected from CNO processing. Finally we
calculate a distance using the SEAM method. Given the broad range of distances
to M51 in the literature, the determination of a distance using Cepheid
variables would be quite valuable.

5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
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The categories of this paper are: math
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph