21,864 Unresolved, Low-mass Binaries Identified via their Overluminosity in Gaia DR3 and a Catalog of 347,440 Systems within 100 pc of the Sun

This dataset contain the catalogs accompanying the paper "21,864 Unresolved, Low-mass Binaries Identified via their Overluminosity in Gaia DR3 and a Catalog of 347,440 Systems within 100 pc of the Sun" by Zachary Way, Sébastien Lépine, Jonathon Gagné, and Ilija Medan submitted to AAS Journals in January 2026. There are two data files: overluminous_catalog.csv: csv table with 164,297 rows and 7 columns. This table represents the measured and predicted magnitudes/colors of the Full Sample defined in the paper. This corresponds to Table 2. catalog_of_systems_100pc.csv: csv table with 347,440 rows and 206 columns. This table aggregates the signs of multiplicity from several sources and attempts to build a Catalog of Systems. This corresponds to Table 3. catalog_of_systems_100pc_lite.csv: csv table with 347,440 rows and 26 columns. This table is a smaller version of Table 3 that does not include the crossmatched Gaia data. This table is the version uploaded to the AAS journal article. Notes on the Overluminosity Catalog: Reddening for each star was calculated using the dustmaps (Green 2018 [2018JOSS....3..695G]) code and the 3D dust map from Edenhofer et al. (2024) [2024A&A...685A..82E]. We include a match to the BANYAN {Sigma} young associations catalog to flag possible overluminosity due to youth rather than binarity Gagné et al. (2018) [2018ApJ...856...23G]; Gagné (2024) [2024PASP..136f3001G]. Notes on the Catalog of Systems: For multiple components, columns are repeated for each Gaia Source ID in the system. The full version of this catalog, with cross-matched values taken from Gaia DR3, is available on Zenodo: 10.5281/zenodo.18500082. An integer whose binary representation identifies catalog membership. Only the first five bits of the 8 bit array are used. As an example a catalogs-1 value of 176 corresponds to the binary representation as an array [1, 0, 1, 1, 0, 0, 0, 0] and the presence of the source in Shariat et al. (2025), Medan & Lépine (2023), and Hartman & Lépine (2020), and the lack of the same source in El-Badry et al. (2021) and Table 2. The full bit values are as follows: 1st bit = Shariat et al. (2025) [2025PASP..137i4201S]; 2 = El-Badry et al. (2021) [2021MNRAS.506.2269E]; 3 = Medan & Lépine (2023) [2023AJ....166..218M]; 4 = Hartman & Lépine (2020) [2020ApJS..247...66H]; 5 = the overluminosity catalog, Section 3.4, Table 2. List of "|" delimited references (ADS bibcodes) that this source_id belongs to according to MOCAdb, Gagné et al. (2026), accepted. Cifuentes et al. (2025) [2025A&A...693A.228C] Gaia DR3 multiplicity flag