Slicing through a 3D ALMA view of the material around the red giant star R Sculptoris
Observations using the Atacama Large Millimeter/submillimeter Array (ALMA) have revealed an unexpected spiral structure in the material around the old star R Sculptoris. This spiral is probably caused by a hidden companion star orbiting the star. This new ALMA video shows a series of slices through the data, each taken at a slightly different frequency. These reveal the shell around the star, appearing as a circular ring, that seems to gets bigger and then smaller, as well as a clear spiral structure in the inner material that it best seen about half-way through the video sequence.
ALMA (ESO/NAOJ/NRAO)/M. Maercker et al./L. Calçada (ESO)
|Data publikacji:||10 października 2012 19:00|
|Czas trwania:||41 s|
|Frame rate:||30 fps|
|Typ:||Milky Way : Star : Evolutionary Stage : Red Giant|