Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Radial Velocity Jitter in Stars from the California and Carnegie Planet
  Search at Keck Observatory   I present an empirical model for predicting a star's radial velocity jitter
from its B-V color, activity level, and absolute magnitude. This model is based
on observations of 450 well- observed stars from Keck Observatory for the
California and Carnegie Planet Search Program. The model includes noise from
both astrophysical sources and systematic errors, and describes jitter as
generally increasing with a star's activity and height above the main sequence.

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The categories of this paper are: hep-ph
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
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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: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: nlin
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-alg
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The categories of this paper are: cond-mat
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
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The categories of this paper are: patt-sol