Other
Scientific paper
Sep 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.0611c&link_type=abstract
American Astronomical Society, 188th AAS Meeting, #06.11; Bulletin of the American Astronomical Society, Vol. 28, p.831
Other
Scientific paper
Aperture synthesis observations in the 21cm line of HI are presented for the galaxy pair II Zw 70/71. II Zw 71 is one of the closest candidate polar-ring galaxies (cz = 1250 km s(-1) ), in which a ring of gas, dust and stars appear to orbit nearly over the pole of a central disk galaxy. The companion galaxy, II Zw 70, has a very bright blue central disk and irregular jets or plumes in stellar light. Most of the HI appears to belong to one or other of the galaxies, but a contiguous bridge of gas between them contains a significant fraction of the neutral gas. Our HI distribution and velocity field provides a unique opportunity to study what may be a polar ring in the process of formation. The [OI]1302 Angstroms line has been detected but not resolved in II Zw 70, in observations with the Goddard High-Resolution Spectrograph on the HST; we will use our measured HI velocity dispersion to estimate the width of the 1302 Angstroms line, and hence derive heavy-element abundances in the neutral medium.
Brinks Elias
Cox Andrea L.
Sparke Linda
van Moorsel Gustaaf
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