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.

Źródło:

ESO

O zdjęciu

Identyfikator:eso0535a
Typ:Obserwacje
Data publikacji:4 listopada 2005
Powiązane komunikaty:eso0535
Rozmiar:1825 x 1688 px

O obiekcie

Nazwa:NGC 87, NGC 88, NGC 89, NGC 92
Typ:Local Universe : Galaxy
Odległość:150 milion lat świetlnych
Constellation:Phoenix
Kategoria:Galaxies

Formaty zdjęć

Wielki JPEG
1,6 MB

Tapety

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

Współrzędne

Pozycja (RA):0 21 22.07
Pozycja (Dec):-48° 38' 33.78"
Pole widzenia:6.11 x 5.65 arcminutes
Orientacja:North is 1.6° prawo of vertical

Kolory i filtry

PasmoDługość faliTeleskop
Optyczny
B
440 nmVery Large Telescope
FORS2
Optyczny
V
557 nmVery Large Telescope
FORS2
Optyczny
R
655 nmVery Large Telescope
FORS2
Podczerwony
I
768 nmVery Large Telescope
FORS2