The polar ring component can also be used to probe the shape of the otherwise invisible dark matter halo by calculating the gravitational influence of the dark matter on the rotation of the ring and disk. It is the only galaxy of its kind to have a “lenticular late-type galaxy” as a host. ngc 660 is seen in this cosmic snapshot. NGC 660 is seen in this cosmic snapshot.
This material may have “lined up” over time to form a rotating ring. It is the only galaxy of this type to have a lenticular late-type galaxy as a host.
What kind of galaxy is NGC 660?
Unfortunately, NGC 660’s polar ring is not visible in this image, but it has numerous other features that make it interesting to astronomers – its central bulge is oddly lopsided and, perhaps more interestingly, it is thought to host exceptionally large amounts of dark matter. Polar ring galaxies can be used to probe the shape of the otherwise invisible dark matter halo by calculating the gravitational influence of the dark matter on the rotation of the ring and disk. The violent gravitational interaction would explain the myriad pink star-forming regions scattered along the ring of NGC 660.
Who discovered NGC 660?
The Gordon Telescope at Arecibo discovered a burst in NGC 660, a spiral galaxy 44 million light-years away in the constellation Pisces. This newly released Hubble image shows the polar ring galaxy NGC 660, which is thought to harbour exceptionally large amounts of dark matter. Unfortunately, the polar ring of NGC 660 is not visible in this image, but it has many other features that make it interesting to astronomers – its central bulge is oddly tilted, and, perhaps more interestingly, it is thought to harbour exceptionally large amounts of dark matter.
How old is NGC 5866?
The group is named after NGC 5866, the galaxy with the highest apparent magnitude in the group, although some galaxy group catalogues list NGC 5907 as the brightest member. This fault suggests that NGC 5866 may have experienced a gravitational tidal perturbation in the distant past due to a close encounter with another galaxy. The blue disk of young stars extends beyond the dust in the extremely thin galactic plane, while the bulge in the centre of the disk appears more orange in colour due to the older and redder stars that are likely to be present there. One of these is NGC 3115, also known as Caldwell 53, a lenticular galaxy (type S0) in the constellation Sextans.
In which constellation is the polar ring galaxy located?
One possibility is that material from a passing galaxy is stripped by the tides to create the polar ring seen in the Polar Ring Galaxy. NGC 2685 is about 50,000 light-years across and 40 million light-years away and is located in the constellation Ursa Major. Nevertheless, the observed properties of NGC 2685 suggest that the rotating ring structure is remarkably old and stable. In this sharp view of the peculiar system, also known as Arp 336 or Helix Galaxy, the strange vertical rings are easily seen as they pass in front of the galactic disk, along with other disturbed outer structures.
NGC 2685 is a confirmed polar ring galaxy – a rare type of galaxy with stars, gas and dust orbiting in rings perpendicular to the plane of a flat galactic disk.