Ficheiro:NGC 7098 - Potw1730a.tif

Imagem numa resolução maior(3 435 × 3 538 píxeis, tamanho: 25,21 MB, tipo MIME: image/tiff)

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Descrição
English: Seeing double


Approximately 95 million light-years away, in the southern constellation of Octans (The Octant), lies NGC 7098 — 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.

This image is formed from data gathered by the FOcal Reducer and low dispersion Spectrograph (FORS) instrument, installed on ESO’s Very Large Telescope at Paranal Observatory. An array of distant galaxies are also visible throughout the frame, the most prominent being the small, edge-on, spiral galaxy visible to the left of NGC 7098, known as ESO 048-G007.

Credit:

ESO

Coordinates
Position (RA): 	21 44 17.11
Position (Dec):	-75° 6' 40.13"
Field of view: 	7.21 x 7.43 arcminutes
Orientation:   	North is -0.0° left of vertical
Colours & filters Band	Telescope
Optical b	440 nm	Very Large Telescope FORS2
Optical v	557 nm	Very Large Telescope FORS2
Optical R	655 nm	Very Large Telescope FORS2 
Optical H-Alpha	660 nm	Very Large Telescope FORS2
.
Data 6 February 2017, 06:00 (Release)
Origem http://www.eso.org/public/images/potw1706a/
Autor Credit: ESO / Acknowledgement: Flickr user Josh Barrington
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Data e horaMiniaturaDimensõesUtilizadorComentário
atual05h12min de 24 de julho de 2017Miniatura da versão das 05h12min de 24 de julho de 20173 435 × 3 538 (25,21 MB)Fabian RRRR=={{int:filedesc}}== {{Information |description={{en|1=Seeing double Approximately 95 million light-years away, in the southern constellation of Octans (The Octant), lies NGC 7098 — an intriguing spiral galaxy with numerous sets of double features....

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