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.

Kilde:

ESO/F. Millour et al.

Om billedet

Id:eso0928c
Type:Observation
Udgivelsesdato:5. august 2009
Relaterede pressemeddelelser:eso0928
Størrelse:256 x 256 px

Om objektet

Navn:HD 87643
Type:Milky Way : Star
Kategori:Nebulae
Stars

Billedformater

Stor JPEG
12,8 KB
Skrærm JPEG
24,2 KB

Baggrundsbilleder

1024x768
25,0 KB
1280x1024
32,8 KB
1600x1200
42,0 KB
1920x1200
48,2 KB
2048x1536
59,1 KB

Farver & filtre

BåndTeleskop
Infrarød
K
Very Large Telescope Interferometer
AMBER

 

Se også...