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Old 29-08-2018, 04:50 PM
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Geoff45 (Geoff)
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Join Date: Jul 2006
Location: Sydney
Posts: 2,631
NGC 7098 in Octans

Here's an interesting little galaxy in Octans.

Actually it is probably the only interesting thing in Octans which has:
  • No myths
  • No Messier objects
  • No meteor showers
  • One star brighter than 4th magnitude (nu Octantis at mag 3.76)
The image is here https://www.astrobin.com/363768/
with higher res here https://www.astrobin.com/full/363768/0/


[From the ESO website] NGC 7098 is an intriguing spiral galaxy with numerous sets of double features. The first of NGC 7098’s double features is a duo of distinct ring-like structures that loop around the galaxy’s hazy heart. These are NGC 7098’s spiral arms, which have wound themselves around the galaxy’s luminous core. This central region hosts a second double feature: a double bar.

NGC 7098 has also developed features known as ansae, visible as small, bright streaks at each end of the central region. Ansae are visible areas of overdensity — they commonly take looping, linear, or circular shapes, and can be found at the extremities of planetary ring systems, in nebulous clouds, and, as is the case with NGC 7098, in parts of galaxies that are packed to the brim with stars.



Integrated Flux Nebula (IFN) occurs throughout the area, as well as many background galaxies.
The FOV is 45' x 42'.
Attached Thumbnails
Click for full-size image (ngc7098_small_v5.jpg)
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