Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: X-Shooter observations of low-mass stars in the Eta Chamaeleontis
  association   The nearby Eta Chamaeleontis association is a collection of 4-10 Myr old
stars with a disk fraction of 35-45%. In this study, the broad wavelength
coverage of VLT/X-Shooter is used to measure the stellar and mass accretion
properties of 15 low mass stars in the Eta Chamaeleontis association. For each
star, the observed spectrum is fitted with a non-accreting stellar template and
an accretion spectrum obtained from assuming a plane-parallel hydrogen slab.
Five of the eight stars with an IR disk excess show excess UV emission,
indicating ongoing accretion. The accretion rates measured here are similar to
those obtained from previous measurements of excess UV emission, but tend to be
higher than past measurements from H-alpha modeling. The mass accretion rates
are consistent with those of other young star forming regions.

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The categories of this paper are: patt-sol
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The categories of this paper are: plasm-ph
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The categories of this paper are: cs
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga
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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: q-bio
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The categories of this paper are: math-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: cond-mat
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: econ
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The categories of this paper are: gr-qc