Spectroscopic study of the weak magnetic star HD220825-κPsc

Details Spectroscopic study of the weak magnetic star HD220825-κPsc Spectroscopic study of the weak magnetic star HD220825-κPsc

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap.....49..497g&link_type=abstract

Astrophysics, Volume 49, Issue 4, pp.497-505

Astronomy and Astrophysics

Astrophysics

1

Stars, Magnetic Fields &Mdash, Individual, Hd220825

Scientific paper

The star HD220825 is studied as part of a program to investigate the chemical abundance of CP stars with weak magnetic fields. Its magnetic field is found to be Be < 100 G. The chemical abundance appears to correspond to that of CP stars with high magnetic fields. The present results and other data imply that the magnetic field has little effect on the degree of anomaly in the chemical abundance, although it undoubtedly has an effect. The rotation speed of the star is 37.5 km/s, substantially lower than for normal stars with the same temperature. The weak magnetic field raises difficulties for the hypothesis that the loss of angular momentum involves the magnetic field.

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