Light curve of AKO 9 in 47 Tucanae

In this diagramme are shown the light curves (change of light intensity with time) for the binary system AKO 9 (o) and two other stars (x) with constant brightness in the southern globular cluster 47 Tucanae.

The ultraviolet magnitude of AKO 9 was U ~ 18 at the time of the first observation. The subsequent rise was very fast: 2.1 magnitudes in 1 hour. It then remained constant for about 2 hours before increasing by another 0.5 mag.

The observations ended with the system in this bright state. It is not known if and when it reverted to its normal state. At the end of these observations, AKO 9 was the brightest ultraviolet source in the core of the cluster.

Créditos:

ESO

Sobre a imagem

Id:eso9703b
Tipo:Mapa
Data de divulgação:15 de Janeiro de 1997
Notícias relacionadas:eso9703
Tamanho:771 x 554 px

Sobre o objeto

Nome:47 Tucanae, AKO 9
Tipo:Milky Way : Star : Grouping : Binary
Milky Way : Star : Grouping : Cluster : Globular
Distância:15000 anos-luz
Categoria:Star Clusters
Stars

Formatos de imagens

JPEG grande
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