Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exo-MerCat: a merged exoplanet catalog with Virtual Observatory
  connection   The heterogeneity of papers dealing with the discovery and characterization
of exoplanets makes every attempt to maintain a uniform exoplanet catalog
almost impossible. Four sources currently available online (NASA Exoplanet
Archive, Exoplanet Orbit Database, Exoplanet Encyclopaedia, and Open Exoplanet
Catalogue) are commonly used by the community, but they can hardly be compared,
due to discrepancies in notations and selection criteria. Exo-MerCat is a
Python code that collects and selects the most precise measurement for all
interesting planetary and orbital parameters contained in the four databases,
accounting for the presence of multiple aliases for the same target. It can
download information about the host star as well by the use of Virtual
Observatory ConeSearch connections to the major archives such as SIMBAD and
those available in VizieR. A Graphical User Interface is provided to filter
data based on the user's constraints and generate automatic plots that are
commonly used in the exoplanetary community. With Exo-MerCat, we retrieved a
unique catalog that merges information from the four main databases,
standardizing the output and handling notation differences issues. Exo-MerCat
can correct as many issues that prevent a direct correspondence between
multiple items in the four databases as possible, with the available data. The
catalog is available as a VO resource for everyone to use and it is
periodically updated, according to the update rates of the source catalogs.

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The categories of this paper are: physics
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
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The categories of this paper are: hep-lat
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: cond-mat
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The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga