Hildebrandt, H; Arnouts, S; Capak, P; Moustakas, L A; Wolf, Christian; Abdalla, Filipe B; Assef, R.J.; Banerji, Manda; Benitez, N; Brammer, G B; Budavari, Tamas
Context. Photometric redshifts (photo-z's) have become an essential tool in extragalactic astronomy. Many current and upcoming observing programmes require great accuracy of photo-z's to reach their scientific goals. Aims. Here we introduce PHAT, the PHoto-z Accuracy Testing programme, an international initiative to test and compare different methods of photo-z estimation. Methods. Two different test environments are set up, one (PHAT0) based on simulations to test the basic functionality of...[Show more]
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