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.

Crédit:

ESO

À propos de l'image

Identification:eso0140b
Type:Observation
Date de publication:5 décembre 2001
Communiqués de presse en rapport:eso0140
Taille:1003 x 682 px

À propos de l'objet

Nom:Hubble Space Telescope, MACHO, Spectrum, Very Large Telescope
Type:Early Universe : Cosmology : Phenomenon : Dark Matter
Milky Way : Cosmology : Phenomenon : Lensing
Catégorie:Cosmology
Illustrations

Formats des images

Grand JPEG
82,2 Kio

Couleurs & filtres

DomaineLongueur d'ondeTélescope
Infrarouge
I
800 nmVery Large Telescope
FORS2