Hipparcos2 Neighbourhood
收藏DataCite Commons2025-03-31 更新2025-04-16 收录
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https://gaia.aip.de/metadata/gaiaedr3/hipparcos2_neighbourhood/
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资源简介：
Table hipparcos2_neighbourhood includes all good neighbours for each matched Hipparcos2 object. A good neighbour for a given Hipparcos2 source is a nearby Gaia object whose position is compatible (within position errors) with the Hipparcos2 target. The cross-match algorithm is not symmetric and searches Hipparcos2 sources counterparts in Gaia. The cross-match algorithm is positional and exploits the full 5 parameter covariance matrix of the Gaia astrometric solution when available and the external catalogue positions and position errors. In addition it takes into account the Gaia environment using the local density.
Please note that the cross-match algorithm is a trade-off between multiple requirements, in particular between completeness and correctness. It is thus not limited to a simple cone search.
Reference papers:
Marrese et al. (2017)
Marrese et al. (2019)
提供机构：
Leibniz Institute for Astrophysics Potsdam (AIP)
创建时间：
2020-12-03
