Mathematics – Logic
Scientific paper
Sep 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...206.1215c&link_type=abstract
American Astronomical Society Meeting 206, #12.15; Bulletin of the American Astronomical Society, Vol. 37, p.791
Mathematics
Logic
Scientific paper
II Zw 23 (UGC 3179) is a luminous (MB -21) nearby compact narrow emission line starburst galaxy with blue optical colors and strong emission lines. We present a photometric and morphological study of II Zw 23 and its interacting companion, PC016099, using data obtained with the WIYN 3.5-m telescope in combination with a WFPC2 image from the HST archives. II Zw 23 has a highly disturbed outer structure with long trails of debris that may be feeding tidal dwarfs. Its central regions appear disk-like, a structure that is consistent with the overall rotation pattern observed in the Hα emission line velocity field measured from Densepak observations obtained with WIYN. We discuss these results in terms of the different evolutionary paths followed by stars and gas during strong interactions and the possibility of rapid secondary galactic disk formation in such events.
Cigan Philip J.
Gallagher Jay S.
Rudie Gwen
Wehner Elizabeth H.
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