Images of SCR 1845-6357 A and B in different filters (NACO-SDI/VLT)

A movie of the SDI camera's images of the low mass star SCR 1845A and its companion, SCR 1845B. Note how the brown dwarf companion (B) is clearly changing in brightness in and out of the SDI methane filters. This proves that B is methane-rich and is thus a rare cool low-mass brown dwarf companion. Moreover, it is also clear that the "halo of speckles" around the much hotter primary star do not change significantly in the three SDI filters. Hence the star's halo can be removed by subtracting the different images, showing that the detection of a faint methane-rich companion (even 10 times closer than B) is made possible with the SDI camera.

Crédit:

ESO

À propos de l'image

Identification:eso0611d
Type:Observation
Date de publication:22 mars 2006
Communiqués de presse en rapport:eso0611
Taille:327 x 356 px

À propos de l'objet

Nom:SCR 1845-6357
Type:Milky Way : Star : Grouping : Binary
Milky Way : Star : Type : Brown Dwarf
Catégorie:Stars

Formats des images

Grand JPEG
75,9 Kio
JPEG taille écran
250,0 Kio

Zoomable


Fonds d'écran

1024x768
214,6 Kio
1280x1024
303,3 Kio
1600x1200
365,5 Kio
1920x1200
384,1 Kio
2048x1536
503,6 Kio

Couleurs & filtres

DomaineLongueur d'ondeTélescope
Infrarouge
Near-IR
1.575 μmVery Large Telescope
NACO