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.
Herkunftsnachweis:ESO
Über das Bild
ID: | eso0725b |
Typ: | Illustration |
Veröffentlichungsdatum: | 31. Mai 2007 |
Dazugehörige Veröffentlichungen: | eso0725 |
Größe: | 3491 x 3476 px |
Über das Objekt
Name: | S Orionis |
Typ: | Milky Way : Star : Evolutionary Stage : Red Giant |
Entfernung: | 1400 Lichtjahre |
Kategorie: | Illustrations Stars |