The strong magnetic field in G227-35

Details The strong magnetic field in G227-35 The strong magnetic field in G227-35

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...405l..67c&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 405, no. 2, p. L67-L70.

Physics

12

H Alpha Line, Stellar Magnetic Fields, Stellar Physics, White Dwarf Stars, Astronomical Polarimetry, Circular Polarization, Stellar Models

Scientific paper

Circular spectropolarimetry of the white dwarf G227-35 shows a prominent feature near 7450 A, with a Stokes parameter jump Delta-V = +0.05. We identify this with the stationary point in the 2p-1-3d-2 transition of H-alpha, which has been calculated to be 7449.4 A in a magnetic field of 117 MG. Other components of H-alpha also are seen. A crude model which can explain the observations is a centered dipole seen close to pole-on, with a polar field strength of about 130 MG.

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