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Long-slit and Fabry-Perot spectroscopy of collisional ring galaxy Arp 10

A. V. Moiseev·D. V. Bizyaev·E. I. Vorobyov
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Abstract

We present results of Fabry-Perot and long-slit spectroscopy of the peculiar galaxy Arp 10. The ionized gas velocity field shows evidence for significant radial motions in both outer and inner galactic rings. Long-slit spectroscopy reveals gradients of age and metallicity of stellar population in agreement with the propagating nature of star formation in the galaxy. We present strong evidence that a small ``knot'' at 5 arcsec from the center of Arp 10 is its dwarf elliptic satellite, the most probable ``intruder'' responsible for triggering the expanding rings in Arp 10.

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A. V. Moiseev, D. V. Bizyaev, E. I. Vorobyov. 2005-01-27. Long-slit and Fabry-Perot spectroscopy of collisional ring galaxy Arp 10. https://arxiv.org/abs/astro-ph/0501601

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