Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The SPOTS Models: A Grid of Theoretical Stellar Evolution Tracks and
  Isochrones For Testing The Effects of Starspots on Structure and Colors   One-dimensional stellar evolution models have been successful at representing
the structure and evolution of stars in diverse astrophysical contexts, but
complications have been noted in the context of young, magnetically active
stars, as well as close binary stars with significant tidal interactions.
Numerous puzzles are associated with pre-main sequence and active main-sequence
stars, relating to their radii, their colors, certain elemental abundances, and
the coevality of young clusters, among others. A promising explanation for
these puzzles is the distorting effects of magnetic activity and starspots on
the structure of active stars. To assist the community in evaluating this
hypothesis, we present the Stellar Parameters Of Tracks with Starspots (SPOTS)
models, a grid of solar-metallicity stellar evolutionary tracks and isochrones
which include a treatment of the structural effects of starspots. The models
range from 0.1-1.3\msun and from spot-less to a surface covering fraction of
85\%, and are evolved from the pre-main sequence to the red giant branch (or
15~Gyr). We also produce two-temperature synthetic colors for our models using
empirically-calibrated color tables. We describe the physical ingredients
included in the SPOTS models and compare their predictions to other modern
evolution codes. Finally, we apply these models to several open questions in
the field of active stars, including the radii of young eclipsing binaries, the
color scale of pre-main sequence stars, and the existence of sub-subgiants,
demonstrating that our models can explain many peculiar features of active
stars.

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The categories of this paper are: stat
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ