The magnetic field of the AM star Omicron Pegasi

Details The magnetic field of the AM star Omicron Pegasi The magnetic field of the AM star Omicron Pegasi

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...230l..21m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 230, no. 2, April 1990, p. L21-L24. Research supported by SNSF.

Astronomy and Astrophysics

Astrophysics

47

A Stars, Hot Stars, Magnetic Field Configurations, Stellar Magnetic Fields, Stellar Spectra, Dynamo Theory, Magnetic Stars, Stellar Atmospheres

Scientific paper

Evidence is presented that the hot Am star Omicron Peg (= HD 214994) has a magnetic field of the order of 2 kG, with a complex structure. Two independent approaches support this conclusion. The first one is an analysis by the Stenflo-Lindegren (1977) technique of the widths of a statistical sample of lines. The other relies on a line-intensity anomaly that is found in magnetic stars. The implications of this probable detection of a field in a member of a class of stars that were not previously known as magnetic is discussed.

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