List of catalogues to cross-match

List of catalogues to be used for cross-matching Gaia Science Alerts sources:

• SDSS
• 2MASS
• NED
• ASAS [1] - long term photometry data in I and V. Whole sky (N+S), down to 14mag
• OGLE [2] - long term photometry data in I and V. Bulge and Magellanic Clouds only
• INTEGRAL [3] - Gamma-ray sources, all sky, data available for download [4]
• WISE all sky infrared catalogue