Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effects of Winds on the Optical Properties of Type Ib and Ic Supernova
  Progenitors   We investigate the effects of winds on the observational properties of Type
Ib and Ic supernova (SN Ib/Ic) progenitors using spectral models constructed
with the non-LTE stellar atmospheric code CMFGEN. We consider SN Ib/Ic
progenitor models of the final mass range of 2.16 -- 9.09~$M_\odot$ having
different surface temperatures and chemical compositions, and calculate the
resulting spectra for various wind mass-loss rates and wind terminal
velocities. We find that the progenitors having an optically thick wind would
become brighter in the optical for a higher mass-loss rate (or a lower wind
terminal velocity), because of the formation of the photosphere in the extended
wind matter and the contribution from free-free and line emissions from the
wind. As a result, for the standard Wolf-Rayet wind mass-loss rate,
helium-deficient compact SN Ic progenitors would be brighter in the optical by
$\sim$3 mag compared to the case without the wind effects. We also find that
the color dependence on the photospheric temperature is non-monotonic because
of the wind effects. Our results imply that inferring the progenitor mass,
bolometric luminosity and effective temperature from the optical observation
using the standard stellar evolution model prediction can be misleading. By
comparing our fiducial model predictions with the detection limits of the
previous SN Ib/Ic progenitor searches, we conclude that a deep search with an
optical absolute magnitude larger than $\sim -4$ is needed to directly identify
most of the ordinary SN Ib/Ic progenitors. We discuss implications of our
results for the observed SN Ib/Ic progenitor candidates for iPTF13bvn, SN
2019yvr and SN 2017ein.

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The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: plasm-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: stat
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The categories of this paper are: atom-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: comp-gas
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The categories of this paper are: supr-con
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-lat
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The categories of this paper are: ao-sci
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The categories of this paper are: cs
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The categories of this paper are: hep-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-alg