Keywords: Aladin2011.04.27-Cygnus XR-4.png en Image is a sky plot of the astronomical X-ray and gamma-ray sources within the error box of Cygnus XR-4 Credit Aladin at SIMBAD Me at SIMBAD using Aladin url http //simbad u-strasbg fr/simbad/ Me and Aladin at SIMBAD 2011-04-26 I sent an email to Pierre Fernique astro unistra fr to ask about PUBLIC Domain use of Aladin skyplots He emailed back that First of all thanks to use Simbad and Aladin to generate your sky plots There is absolutely no problem to use them for Wikipedia pages A citation of Aladin would be appreciated Best regards Pierre Fernique Legend X - X-ray source red - star red + - HII region Nova-like - Nova-like star HMXB - high-mass X-ray binary gammaBurst - gamma-ray burst BY Dra - BY Draconis variable gamma - gamma-ray source Cc-zero X-ray astronomy Astronomical diagrams Gamma ray bursts |