Zeeman Effect in Stellar Spectra.

Abstract

view Abstract Citations (286) References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Zeeman Effect in Stellar Spectra. Babcock, H. W. Abstract Some stars of early spectral type which exhibit sharp metallic lines may be in rapid rotation, with their axes directed nearly toward the observer. On the possibility that strong magnetic fields are corre- lated with rapid rotation in such objects, the Zeeman effect for a normal triplet line, as observed through a circular analyzer, has been integrated over the visible hemisphere of the star. Reasonable assumptions are made regarding field distribution and limb darkening. It is found that the integrated Zeeman effect for a normal triplet should give a displacement of about 3 X 106 A/gauss at A 4600. Observations of the star 78 Vir (type A2p), made with a differential circular analyzer in front of the slit of the coudé spectrograph of the 100-inch telescope, show displacements of the metallic absorption lines that are interpreted as a Zeeman effect resulting from a general magnetic field having a strength of 1500 gauss at the pole. The control star ~ Peg (type KO) shows no effect Publication: The Astrophysical Journal Pub Date: January 1947 DOI: 10.1086/144887 Bibcode: 1947ApJ...105..105B full text sources ADS | data products SIMBAD (2)