Robert's Quartet

Robert's Quartet is a family of four very different galaxies, located at a distance of about 160 million light-years, close to the centre of the southern constellation of the Phoenix. Its members are NGC 87, NGC 88, NGC 89 and NGC 92, discovered by John Herschel in the 1830s.

NGC 87 (upper right) is an irregular galaxy similar to the satellites of our Milky Way, the Magellanic Clouds. NGC 88 (centre) is a spiral galaxy with an external diffuse envelope, most probably composed of gas. NGC 89 (lower middle) is another spiral galaxy with two large spiral arms. The largest member of the system, NGC 92 (left), is a spiral Sa galaxy with an unusual appearance. One of its arms, about 100,000 light-years long, has been distorted by interactions and contains a large quantity of dust.

Bildnachweis:

ESO

Über das Bild

ID:eso0535a
Typ:Beobachtung
Veröffentlichungsdatum:4. November 2005
Dazugehörige Veröffentlichungen:eso0535
Größe:1825 x 1688 px

Über das Objekt

Name:NGC 87, NGC 88, NGC 89, NGC 92
Typ:Local Universe : Galaxy
Entfernung:150 Million Lichtjahre
Constellation:Phoenix
Kategorie:Galaxies

Bildformate

Großes JPEG
1,6 MB

Bildschirm-Hintergrundbilder

1024x768
158,2 KB
1280x1024
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1600x1200
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1,3 MB

Koordinaten

Position (RA):0 21 22.07
Position (Dec):-48° 38' 33.78"
Field of view:6.11 x 5.65 arcminutes
Orientierung:Die Nordrichtung liegt 1.6° rechts zur Vertikale

Farben & Filter

SpektralbereichWellenlängeTeleskop
Optisch
B
440 nmVery Large Telescope
FORS2
Optisch
V
557 nmVery Large Telescope
FORS2
Optisch
R
655 nmVery Large Telescope
FORS2
Infrarot
I
768 nmVery Large Telescope
FORS2