A SYSTEMATIC SEARCH FOR NEW NEARBY BROWN DWARF CANDIDATES
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Abstract
The data release in 2023 from Gaia, a space astrometry survey contains about 1.8 billion sources with very high-precision positions, distances, and proper motions. Using the Gaia astrometry and the DENIS photometry, we search for new nearby brown dwarfs over about 13500 square degrees in the DENIS database. This paper presents our selection criteria of brown dwarf candidates and a preliminary result of 439 candidates with spectral types estimated from M8 to L2 and photometric distances from 30 to 75 pc.