Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...138..267m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 138, no. 2, Sept. 1984, p. 267-274.
Astronomy and Astrophysics
Astrophysics
49
A Stars, B Stars, Magnetic Stars, Peculiar Stars, Stellar Atmospheres, Stellar Composition, Abundance, Silicon, Spatial Distribution, Stellar Magnetic Fields
Scientific paper
Attention is given to the distribution of the silicon abundance in magnetic star atmospheres, for the cases of 12,000 and 14,000 K effective temperatures and dipolar magnetic field strengths of up to 100,000 Gauss. The important horizontal component of the diffusion velocity leads to a migration of silicon from the magnetic equator towards the magnetic poles, yielding various silicon distributions on the stellar surfaces which depend for their state on the age of the star. The youngest stars exhibit overabundances everywhere on their surfaces, especially in the equatorial zone. After about 100 million years, the equatorial region will become silicon-free, except perhaps at the equatorial plane, while the other regions will have moderate overabundances.
No associations
LandOfFree
Evolution of the silicon abundance distribution in the atmosphere of magnetic BP and AP stars 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 Evolution of the silicon abundance distribution in the atmosphere of magnetic BP and AP stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolution of the silicon abundance distribution in the atmosphere of magnetic BP and AP stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1389445