The Non-uniform Surface Chromium Distribution of 78 Vir

Details The Non-uniform Surface Chromium Distribution of 78 Vir The Non-uniform Surface Chromium Distribution of 78 Vir

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..362..258k&link_type=abstract

The Seventh Pacific Rim Conference on Stellar Astrophysics, ASP Conference Series, Vol. 362, Proceedings of the conference held

Astronomy and Astrophysics

Astrophysics

Scientific paper

The surface magnetic field configuration of the Ap star 78 Vir is reconstructed in the framework of the magnetic charge description (MCD) method from the analysis of Stokes IQUV spectra. Magnetically-sensitive Cr I and Cr II lines are analysed by assuming a stellar atmosphere model with Teff=9250K, log(g)=4.5 and by postulating a non-uniform surface chromium distribution. We show that the global magnetic field structure determined using Cr lines can be well-described by a slightly decentered magnetic dipole model, which provides the best fit to the majority of lines analysed at the level of χ2=2.77div4.76. An acceptable fit to the Cr line profiles requires the introduction of a non-uniform surface distribution of this element, which appears to show an enhanced abundance in the vicinity of the negative magnetic pole.

Affiliated with

Also associated with

No associations

Rating

The Non-uniform Surface Chromium Distribution of 78 Vir 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 The Non-uniform Surface Chromium Distribution of 78 Vir, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Non-uniform Surface Chromium Distribution of 78 Vir will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-875517