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.

Kredit:

ESO

O snímku

Id:eso0535a
Typ:Pozorování
Datum zveřejnění:4. listopadu 2005
Související články:eso0535
Velikost:1825 x 1688 px

O objektu

Jméno:NGC 87, NGC 88, NGC 89, NGC 92
Typ:Local Universe : Galaxy
Vzdálenost:150 milion světelné roky
Constellation:Phoenix
Kategorie:Galaxies

Image Formats


Pozadí

1024x768
158,2 KB
1280x1024
328,6 KB
1600x1200
671,9 KB
1920x1200
991,2 KB
2048x1536
1,3 MB

Souřadnice

Position (RA):0 21 22.07
Position (Dec):-48° 38' 33.78"
Field of view:6.11 x 5.65 arcminutes
Orientace:Sever je 1.6° pravá od svislé osy

Barvy & filtry

PásmoVlnová délkaDalekohled
Optický
B
440 nmVery Large Telescope
FORS2
Optický
V
557 nmVery Large Telescope
FORS2
Optický
R
655 nmVery Large Telescope
FORS2
Infračervený
I
768 nmVery Large Telescope
FORS2