Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New neighbours VI. Spectroscopy of DENIS nearby stars candidates   We present spectra of 36 nearby star candidates and 3 red giant candidates,
identified in the DENIS database by Phan-Bao et al. (2003). 32 of the dwarf
candidates are indeed nearby red dwarfs, with spectral types from M5.5 to M8.5.
Out of 11 targets with low proper motion (mu < 0.1$ arc-sec/yr) but a Reduced
Proper Motion above an inclusive threshold, 9 are red dwarfs. The 4
contaminants are all reddened F-K main sequence stars, and they could have been
eliminated by checking for some well known high latitude molecular clouds.
These stars might be of interest as probes of interstellar absorption. For the
red dwarfs we derive spectral types and spectroscopic distances, using a new
calibration of the PC3 spectral index to absolute magnitudes in the I, J, H and
K photometric bands.
  We confirm 2 new members of the 12 pc volume (2 new M8.5), and one M7.5 NLTT
object closer than 10pc. We also show that one quarter of the stars with
photometric distances under 30 pc have too small a proper motion for inclusion
in the NLTT catalog.

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The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
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The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
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The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: mtrl-th