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.

Oikeudet:

ESO

Kuvasta

Tunnistus:eso0140a
Tyyppi:Havainto
Julkaisupäivä:5. joulukuuta 2001
Vastaavat julkaisut:eso0140
Koko:793 x 637 px

Kohteesta

Nimi:MACHO
Tyyppi:Milky Way : Cosmology : Phenomenon : Dark Matter
Milky Way : Cosmology : Phenomenon : Lensing
Kategoria:Cosmology

Kuvaformaatit

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37,7 KB
Kokoruudun JPEG
43,4 KB

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Värit ja suotimet

KaistaTeleskooppi
Optinen
B
Hubble Space Telescope
WFPC2
Optinen
V
Hubble Space Telescope
WFPC2
Infrapuna
I
Hubble Space Telescope
WFPC2