Galaxy transmutations: The double ringed galaxy ESO 474-G26

  title={Galaxy transmutations: The double ringed galaxy ESO 474-G26},
  author={Vladimir P Reshetnikov and Fr{\'e}d{\'e}ric Bournaud and Françoise Combes and Max Fa{\'u}ndez-Abans and Mari{\^a}ngela de Oliveira-Abans and Wim van Driel and Stephen E. Schneider},
  journal={Astronomy and Astrophysics},
Surface photometry and a 21 cm H  line spectrum of the giant double-ringed galaxy ESO 474-G26 are presented. The morphology of this system is unique among the 30 000 galaxies with B ≤15. 5. Two almost orthogonal optical rings with diameters of 60 and 40 kpc surround the central body (assuming H0 = 70 km s −1 Mpc −1 ). The outer one is an equatorial ring, while the inner ring lies in a nearly polar plane. The rings have blue optical colors typical of late-type spirals. Both appear to be… Expand
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