Документ взят из кэша поисковой машины. Адрес
оригинального документа
: http://www.astro.spbu.ru/PolarRing/prg.html
Дата изменения: Tue Sep 13 13:46:02 2011 Дата индексирования: Mon Oct 1 19:37:59 2012 Кодировка: Поисковые слова: п п п п п п п п |
The unique geometry of PRGs makes them laboratories for a several important astrophysical studies:
![]() |
Thie figure presents numerical simulation of the formation of a polar ring during the interaction of two galaxies (see F.Bournaud, F.Combes, 2003, A&A, v.401, p.817-833 and this page). At the beginning, the future host galaxy (at the center) is a normal spiral galaxy. Another galaxy (only gas clouds of the galaxy are shown) interacts with it, even if no merger occurs. Tidal forces are so strong that a part of the second galaxy is captured by the host galaxy and winds up around the host disk, to form the polar ring. The companion galaxy, after having lost most of its gas, escapes and runs away from the host. |
NGC 4650A ( PRC A-5 )
(ESO VLT photo);
NGC 4650A
(HST image)
AM 1934-563 ( PRC B-18 ) (1.6-m telescope of
the OPD, Brasil) - August 2002
ESO 603-G21 ( PRC B-21 ) (1.6-m telescope of
the OPD, Brasil)
A 2330-3751 ( PRC B-23 ) (1.6-m telescope of
the OPD, Brasil) - August 2002
ESO 474-G26 ( PRC C-3 ) (1.6-m telescope of
the OPD, Brasil) - August 2002
NGC 660 ( PRC C-13 )
(SDSS image)
UGC 10205 ( PRC C-50 ) (1.2-m telescope of the
OHP, France)
NGC 7468 ( PRC C-69 ) (1.2-m telescope of the
OHP, France)
(to be continued)
Candidate polar-ring galaxies in the Hubble Deep Field:
Additional PRGs sites (with some images) are: