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.

Créditos:

ESO/F. Millour et al.

Sobre a imagem

Id:eso0928c
Tipo:Observação
Data de divulgação:5 de Agosto de 2009
Notícias relacionadas:eso0928
Tamanho:256 x 256 px

Sobre o objeto

Nome:HD 87643
Tipo:Milky Way : Star
Categoria:Nebulae
Stars

Formatos de imagens

JPEG grande
12,8 KB

Papéis de parede

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

Cores e filtros

BandaTelescópio
Infravermelho
K
Very Large Telescope Interferometer
AMBER

 

Veja também