The first MACHO spectrum

Composite spectrum of the two very close objects seen on the HST image (ESO Press Photo eso0140). It is based on four 1500-second exposures that were obtained with the FORS2 multi-mode instrument at the 8.2-m VLT KUEYEN telescope on February 2, 2001. The presence of certain metal and alkali resonance lines, in particular of sodium (Na), is typical of a cool stellar object. Telluric molecular bands (from the Earth's atmosphere) are indicated with an earth-symbol.

Bildnachweis:

ESO

Über das Bild

ID:eso0140b
Typ:Beobachtung
Veröffentlichungsdatum:5. Dezember 2001
Dazugehörige Veröffentlichungen:eso0140
Größe:1003 x 682 px

Über das Objekt

Name:Hubble Space Telescope, MACHO, Spectrum, Very Large Telescope
Typ:Early Universe : Cosmology : Phenomenon : Dark Matter
Milky Way : Cosmology : Phenomenon : Lensing
Kategorie:Cosmology
Illustrations

Bildformate

Großes JPEG
82,2 KB

Farben & Filter

SpektralbereichWellenlängeTeleskop
Infrarot
I
800 nmVery Large Telescope
FORS2