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WikiPedia: HR 8799 http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HR+... http://vizier.u-strasbg.fr/viz-bin/Cat?V/50 http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.a... http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.a... http://www.nasa.gov/multimedia/imagegallery/image_... //arxiv.org/abs/astro-ph/9905042 //doi.org/10.1086%2F301134 //doi.org/10.1086%2F316399 https://exoplanetarchive.ipac.caltech.edu/cgi-bin/... https://ui.adsabs.harvard.edu/abs/1999AJ....118.29...