Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: TYC 8380-1953-1: Discovery of an RS CVn binary through the XMM-Newton
  slew survey   In this paper we report the discovery of the chromospherically active (RS CVn
type) binary TYC 8380-1953-1 through the XMM-Newton slew survey and present
results of our optical and X-ray follow-up. With a flux limit of $6 \times
10^{-13}$ erg cm$^{-2}$ s$^{-1}$ in the soft band ($0.2 - 2$ keV), the
XMM-Newton slew has a similar sensitivity to the ROSAT All Sky Survey allowing
interesting sources to be identified by their long-term variability. Two
different types of stellar sources are detected in shallow X-ray surveys: young
stars (both pre-main and main sequence stars) and chromospherically active
binaries (BY Dra and RS CVn type systems). The discovery of stars in such
surveys and the study of their nature through optical follow-ups is valuable to
determine their spatial distribution and scale height in the Galaxy. Our
analysis shows that TYC 8380-1953-1 is a double-lined spectroscopic binary with
both components having similar spectral type (likely K0/2+K3/5) and luminosity.
With a typical coronal temperature for an RS CVn system ($kT \sim 1.15$ keV)
and an X-ray luminosity in the $0.3-10$ keV energy band higher than $4 \times
10^{31}$ erg\,s$^{-1}$, TYC 8380-1953-1 lies among the most X-ray luminous RS
CVn binaries.

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The categories of this paper are: math
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The categories of this paper are: hep-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ex
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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: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: econ
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: ao-sci