Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The diversity of Type II supernova versus the similarity in their
  progenitors   High-quality collections of Type II supernova (SN) light curves are scarce
because they evolve for hundreds of days, making follow-up observations time
consuming and often extending over multiple observing seasons. In light of
these difficulties, the diversity of SNe II is not fully understood. Here we
present ultraviolet and optical photometry of 12 SNe II monitored by the Las
Cumbres Observatory Global Telescope Network (LCOGT) during 2013-2014, and
compare them with previously studied SNe having well-sampled light curves. We
explore SN II diversity by searching for correlations between the slope of the
linear light-curve decay after maximum light (historically used to divide SNe
II into IIL and IIP) and other measured physical properties. While SNe IIL are
found to be on average more luminous than SNe IIP, SNe IIL do not appear to
synthesize more 56Ni than SNe IIP. Finally, optical nebular spectra obtained
for several SNe in our sample are found to be consistent with models of red
supergiant progenitors in the 12-16 Msun range. Consequently, SNe IIL appear
not to account for the deficit of massive red supergiants as SN II progenitors.

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The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: chem-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: physics
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The categories of this paper are: nucl-th
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: gr-qc
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The categories of this paper are: math