Datasets for: Identification of 12 Nearby Stars with Mid-Infrared Excess: Potential Debris Disk Candidates from Gaia-AllWISE

DescriptionThis dataset contains the catalogs and filtered samples used to identify 12 nearby stars exhibiting significant mid-infrared excess, indicative of circumstellar debris disks or "asteroid belt" analogs. The analysis utilizes high-precision astrometry from Gaia DR3 and infrared photometry from the AllWISE survey.Dataset Contents:gaia_2000_stars.csv: The initial parent sample of ~2,000 stars selected from the Gaia database. This file includes source_id, ra, dec, parallax, and optical magnitudes used for the initial volume-limited selection.gaia_wise_merged.csv: The cross-matched product of the Gaia parent sample and the AllWISE catalog. This dataset includes multi-wavelength photometry ($G, BP, RP, W1, W2, W3, W4$) and angular separation (angDist) used to ensure high-fidelity matches.asteroid_belt_candidates.csv: The final refined catalog of 12 stars that met the stringent criteria for infrared excess ($W1-W4$). Includes calculated fields such as abs_g (absolute magnitude) and the specific excess values.Methodology Summary:Sources were cross-matched using a 1-arcsecond radius. Candidates were filtered to ensure they reside on the Main Sequence using Gaia Color-Magnitude Diagrams. The primary selection for the 12 candidates was based on a significant $W4$ ($\sim 22\ \mu m$) excess, where the significance of the excess was weighed against photometric uncertainties to rule out noise or background contamination.Usage Notes:This data supports the findings published in Research Notes of the AAS (RNAAS). It is intended for researchers interested in circumstellar disks, planetary system evolution, and stellar photometry.