Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simultaneous (age, metallicity) estimates of the Hyades open cluster
  from three binary systems   Three binary systems in the Hyades open cluster, with known metallicity and
good Johnson photometric data are used to test the validity of three
independent sets of stellar evolutionary tracks. A statistical method is
described and applied to the colour-magnitude diagram of the six selected
components, giving rise to $\chi^2$-contours in the age-metallicity plane. The
effects of the Hipparcos parallaxes on these confidence regions are studied for
these binaries through a comparison with very accurate but older orbital
parallaxes. Independent simultaneous age-metallicity estimates are given and
compared with observational constraints (see Lastennet et al. 1999,
astro-ph/9905273, for more details).

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The categories of this paper are: cs
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The categories of this paper are: eess
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci