Structure of the pulsating red giant S Ori (artist's impression)

Sketch of the structure of a pulsating red giant, as derived by the recent interferometric study on S Orionis. The environment around the parent star is made up by three main components : a molecular shell (inner red layer), a dust shell (outer red layer) and a maser shell (red and green speckles). Grains of aluminum oxide constitute most of the dust shell (observed in the infrared band), while the maser radio emission comes from silicon monoxide molecules. The maser spots velocities indicates that the gas is expanding, at a speed of about 10 km/s.

Crediti:

ESO

Riguardo l'immagine

Identificazione:eso0725b
Tipo:Illustrazione
Data di rilascio:31 Maggio 2007
Notizie relative:eso0725
Grandezza:3491 x 3476 px

Riguardo all'oggetto

Nome:S Orionis
Tipo:Milky Way : Star : Evolutionary Stage : Red Giant
Distanza:1400 Anni luce
Categoria:Illustrations
Stars

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