Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Consistent estimates of (56)Ni yields for type Ia supernovae   We present (56)Ni mass estimates for seventeen well-observed type Ia
supernovae determined by two independent methods. Estimates of the (56)Ni mass
for each type Ia supernova are determined from (1) modeling of the late-time
nebular spectrum and (2) through the combination of the peak bolometric
luminosity with Arnett's rule. The attractiveness of this approach is that the
comparison of estimated (56)Ni masses circumvents errors associated with the
uncertainty in the adopted values of reddening and distance. We demonstrate
that these two methods provide consistent estimates of the amount of (56)Ni
synthesized. We also find a strong correlation between the derived (56)Ni mass
and the absolute B-band magnitude (M(B)). Spectral synthesis can be used as a
diagnostic to study the explosion mechanism. By obtaining more nebular spectra
the Nif--M(B) correlation can be calibrated and can be used to investigate any
potential systematic effects this relationship may have on the determination of
cosmological parameters, and provide a new way to estimate extra-galactic
distances of nearby type Ia supernovae.

29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
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The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
16
The categories of this paper are: stat