12 Nearby Stars with Mid-Infrared Excess from Gaia-AllWISE Crossmatch

Md Mustakim Bin Alam published this dataset in 2026 to support findings in Research Notes of the AAS. It contains catalogs used to identify 12 nearby main-sequence stars with significant mid-infrared excess, indicating potential debris disks. The data includes a parent sample of approximately 2,000 stars from Gaia DR3 cross-matched with AllWISE infrared photometry.

Use Cases

• Identify debris disk candidates by analyzing the significance of the W4 (~22 μm) excess value against photometric uncertainties.
• Study stellar properties by correlating absolute magnitude (abs_g) with infrared excess values in the final candidate catalog.
• Validate cross-matching techniques using the angular separation (angDist) field in the merged Gaia-AllWISE catalog.
• Filter main-sequence stars using Gaia color-magnitude diagrams based on G, BP, and RP magnitudes from the parent sample.
• Analyze multi-wavelength photometric trends across G, BP, RP, W1, W2, W3, and W4 bands for stars with potential circumstellar material.

Strengths

• Final catalog contains 12 high-confidence candidates refined through stringent criteria.
• Parent sample includes approximately 2,000 stars, providing context for the selection process.
• Data integrates high-precision Gaia DR3 astrometry (ra, dec, parallax) with AllWISE infrared photometry.
• Cross-matching performed with a precise 1-arcsecond radius to ensure high-fidelity matches.

Limitations

• The dataset is very small in scale at 769.3 KB, with a final sample of only 12 candidate stars.
• Sample size is limited, which restricts statistical analysis and generalizability of findings.
• Temporal coverage and observation dates for the underlying Gaia and WISE data are not specified in the provided description.

Provenance

Source

Gaia Data Release 3 (DR3) and the AllWISE infrared survey.

Collection Method

Stars were selected from a Gaia parent sample, cross-matched with AllWISE using a 1-arcsecond radius, and filtered using color-magnitude diagrams and significance tests on W4 excess.

Freshness

Dataset was last updated on 2026-03-26, but the underlying Gaia DR3 and AllWISE survey data have their own release timelines.

Geography

Celestial coverage for nearby stars; specific coordinates are provided via ra and dec fields.