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.

Crédito:

ESO

Sobre la imagen

Identificador:eso0140a
Tipo:Observación
Fecha de publicación:5 de Diciembre de 2001
Noticias relacionadas:eso0140
Tamaño:793 x 637 px

Sobre el objeto

Nombre:MACHO
Tipo:Milky Way : Cosmology : Phenomenon : Dark Matter
Milky Way : Cosmology : Phenomenon : Lensing
Categoría:Cosmology

Formatos de imagen

Tamaño original
124,2 KB
JPEG grande
37,7 KB

Fondo de pantalla

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

Colores y filtros

BandaTelescopio
Óptico
B
Hubble Space Telescope
WFPC2
Óptico
V
Hubble Space Telescope
WFPC2
Infrarrojo
I
Hubble Space Telescope
WFPC2