Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-01-09
Astronomy and Astrophysics
Astrophysics
17 pages
Scientific paper
The presence of off-plane Ca II ions in the Beta Pictoris disk, and the non-detection of off-plane Na I atoms, can be explained as a consequence of the evaporation process of Falling Evaporating Bodies (FEBs). In the star-grazing regime, the FEBs are subject to inclination oscillations up to 30 - 40 degrees that causes most metallic species released by sublimation to move off plane The ions are be stopped at about 100 AU from the star. We show that collisions with a neutral medium can stop the ions. The required H I column density is reduced to 10^17 cm^-2, one order of magnitude below present detection limits. We also investigate the possibility that the ions are slowed down magnetically. While the sole action of a magnetic field of the order of 1 microGauss is not effective, the combined effect of magnetic and collisional deceleration processes lead to an additional lowering of the required H I column density.
Beust Hervé
Valiron Pierre
No associations
LandOfFree
High latitude gas in the Beta Pictoris system. A possible origin related to Falling Evaporating Bodies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with High latitude gas in the Beta Pictoris system. A possible origin related to Falling Evaporating Bodies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High latitude gas in the Beta Pictoris system. A possible origin related to Falling Evaporating Bodies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-722448