| Type |
Journal Article |
| Names |
A. L. Cox, L. S. Sparke, G. van Moorsel |
| Publication |
The Astronomical Journal |
| Volume |
131 |
| Issue |
2 |
| Pages |
828-836 |
| Date |
February 1, 2006 |
| URL |
http://adsabs.harvard.edu/abs/2006AJ....131..828C |
| Library Catalog |
NASA ADS |
| Abstract |
We have used the Very Large Array to observe the polar ring galaxy UGC
9796 (II Zw 73; PRC A-06) in the 21 cm line of neutral hydrogen. All the
neutral gas in this galaxy is associated with the polar ring. Our
observations show that ~=5×109 Msolar of H I
rotates in a plane projected about 25° from perpendicular to the
equatorial plane of the early-type host galaxy, consistent with earlier
observations in the Hα line. The outermost gas appears to bend
away from the minor axis of the host system, in the same sense as the
stellar ring. UGC 9796 is in a very gas-rich environment: our 21 cm
images show five gas-rich companion galaxies in the same field within
100 km s-1, with a total of ~=2×1010
Msolar between them. However, we see no H I streamers
connecting the systems or any other evidence for an ongoing interaction
between UGC 9796 and its companions. |
| Tags |
GALAXIES: STRUCTURE, Radio Lines: Galaxies, galaxies: individual (UGC 9796), galaxies: kinematics and dynamics |