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.
Credit:ESO
Over de afbeelding
Id: | eso0725b |
Type: | Ontwerp |
Publicatiedatum: | 31 mei 2007 |
Gerelateerde berichten: | eso0725 |
Grootte: | 3491 x 3476 px |
Over het object
Naam: | S Orionis |
Type: | Milky Way : Star : Evolutionary Stage : Red Giant |
Afstand: | 1400 lichtjaren |
Categorie: | Illustrations Stars |