AAS 205th Meeting, 9-13 January 2005
Session 26 Starbursts in Galaxies
Poster, Monday, January 10, 2005, 9:20am-6:30pm, Exhibit Hall

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[26.05] Long-slit and Fabry-Perot Spectroscopy of Collisional Ring Galaxy Arp 10

A.V. Moiseev (SAO RAS), D. Bizyaev (UTEP, SAI), E.I. Vorobyov (Institute of Physics, Rostov-on-Don)

We present results of Fabry-Perot and long-slit spectroscopy of the peculiar galaxy Arp 10. The ionized gas velocity field shows strong 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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Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.