Image of a MACHO

This image is based on three exposures from the WFPC2 camera at the NASA/ESA Hubble Space Telescope, obtained in the V-, R- and I-bands (shown as blue, green and red, respectively). It shows the first image of a Dark Matter object — a MACHO (a massive compact object). It is the red object that is indicated with an arrow and very near to the upper left (at 2 o''clock) of a blue background star. This MACHO is a nearby red dwarf star that gravitationally focused light from the blue background star in another galaxy in a so-called microlensing event. Since the event six years ago, the MACHO has moved 0.134 arcseconds on the sky and can now be clearly separated in the Hubble image.

Kredit:

ESO

O snímku

Id:eso0140a
Typ:Pozorování
Datum zveřejnění:5. prosince 2001
Související články:eso0140
Velikost:793 x 637 px

O objektu

Jméno:MACHO
Typ:Milky Way : Cosmology : Phenomenon : Dark Matter
Milky Way : Cosmology : Phenomenon : Lensing
Kategorie:Cosmology

Image Formats


Pozadí

1024x768
42,0 KB
1280x1024
58,3 KB
1600x1200
70,1 KB
1920x1200
79,1 KB
2048x1536
96,5 KB

Barvy & filtry

PásmoDalekohled
Optický
B
Hubble Space Telescope
WFPC2
Optický
V
Hubble Space Telescope
WFPC2
Infračervený
I
Hubble Space Telescope
WFPC2