Spectroscopic follow-up of 11 candidates from the MGQPC catalog confirms 6 dual quasars and 3 projected quasars, with discussion of prior survey misses and future strategies.
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DSC classifiers achieve at least 88% completeness and 96% purity for bright extragalactic sources in Gaia DR4, with mid-IR data boosting faint-source completeness at modest purity cost.
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Search for Quasar Pairs with ${\it Gaia}$ Astrometric Data. III. Discovery of 9 dual and projected quasars
Spectroscopic follow-up of 11 candidates from the MGQPC catalog confirms 6 dual quasars and 3 projected quasars, with discussion of prior survey misses and future strategies.
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Performance analysis of extragalactic classifications in Gaia Data Release 4
DSC classifiers achieve at least 88% completeness and 96% purity for bright extragalactic sources in Gaia DR4, with mid-IR data boosting faint-source completeness at modest purity cost.