The double star HD 87643

Observations made with ESO's Very Large Telescope Interferometer allowed a team of astronomers to discover that the star HD 87643, which lies at the centre of a dusty nebula, has a companion located about 50 times the mean Earth-Sun distance. This companion completes an orbit in a few tens of years and may be responsible for the regular ejections of material that created the nebula. By combining the light from various combinations of three of the telescopes forming the VLT array, the interferometric technique reveals details 100 times smaller than shown with the NACO adaptive optics instrument. The field of view is only 100 milli-arcseconds, or less than one third of a single WFI pixel.

Crédit:

ESO/F. Millour et al.

À propos de l'image

Identification:eso0928c
Type:Observation
Date de publication:5 août 2009
Communiqués de presse en rapport:eso0928
Taille:256 x 256 px

À propos de l'objet

Nom:HD 87643
Type:Milky Way : Star
Catégorie:Nebulae
Stars

Image Formats

Grand JPEG
12,8 Kio

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1024x768
25,0 Kio
1280x1024
32,8 Kio
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42,0 Kio
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48,2 Kio
2048x1536
59,1 Kio

Couleurs & filtres

DomaineTélescope
Infrarouge
K
Very Large Telescope Interferometer
AMBER

 

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